/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/up.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 12:11:33,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 12:11:33,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 12:11:33,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 12:11:33,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-18 12:11:33,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 12:11:33,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 12:11:33,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 12:11:33,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 12:11:33,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 12:11:33,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 12:11:33,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 12:11:33,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 12:11:33,197 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 12:11:33,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 12:11:33,198 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 12:11:33,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 12:11:33,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 12:11:33,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 12:11:33,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 12:11:33,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 12:11:33,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 12:11:33,199 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 12:11:33,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 12:11:33,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 12:11:33,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 12:11:33,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 12:11:33,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 12:11:33,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 12:11:33,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 12:11:33,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 12:11:33,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 12:11:33,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 12:11:33,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 12:11:33,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 12:11:33,200 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 12:11:33,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 12:11:33,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 12:11:33,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 12:11:33,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 12:11:33,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 12:11:33,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 12:11:33,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 12:11:33,416 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 12:11:33,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/up.i [2022-03-18 12:11:33,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72261df7/b9adb6d9bd92489ab3b4aaeb2e70b48f/FLAGdcde0aeb5 [2022-03-18 12:11:33,805 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 12:11:33,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i [2022-03-18 12:11:33,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72261df7/b9adb6d9bd92489ab3b4aaeb2e70b48f/FLAGdcde0aeb5 [2022-03-18 12:11:34,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72261df7/b9adb6d9bd92489ab3b4aaeb2e70b48f [2022-03-18 12:11:34,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 12:11:34,236 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 12:11:34,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 12:11:34,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 12:11:34,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 12:11:34,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:11:34" (1/1) ... [2022-03-18 12:11:34,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f012ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:11:34, skipping insertion in model container [2022-03-18 12:11:34,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:11:34" (1/1) ... [2022-03-18 12:11:34,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 12:11:34,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 12:11:34,379 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i[893,906] [2022-03-18 12:11:34,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 12:11:34,396 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 12:11:34,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i[893,906] [2022-03-18 12:11:34,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 12:11:34,418 INFO L208 MainTranslator]: Completed translation [2022-03-18 12:11:34,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:11:34 WrapperNode [2022-03-18 12:11:34,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 12:11:34,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 12:11:34,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 12:11:34,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 12:11:34,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:11:34" (1/1) ... [2022-03-18 12:11:34,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:11:34" (1/1) ... [2022-03-18 12:11:34,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:11:34" (1/1) ... [2022-03-18 12:11:34,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:11:34" (1/1) ... [2022-03-18 12:11:34,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:11:34" (1/1) ... [2022-03-18 12:11:34,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:11:34" (1/1) ... [2022-03-18 12:11:34,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:11:34" (1/1) ... [2022-03-18 12:11:34,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 12:11:34,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 12:11:34,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 12:11:34,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 12:11:34,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:11:34" (1/1) ... [2022-03-18 12:11:34,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 12:11:34,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:34,471 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 12:11:34,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 12:11:34,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 12:11:34,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 12:11:34,502 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 12:11:34,502 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 12:11:34,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 12:11:34,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 12:11:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 12:11:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 12:11:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 12:11:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 12:11:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 12:11:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 12:11:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 12:11:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 12:11:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 12:11:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 12:11:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 12:11:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 12:11:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 12:11:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 12:11:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 12:11:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 12:11:34,564 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 12:11:34,565 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 12:11:34,654 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 12:11:34,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 12:11:34,657 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-18 12:11:34,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:11:34 BoogieIcfgContainer [2022-03-18 12:11:34,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 12:11:34,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 12:11:34,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 12:11:34,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 12:11:34,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:11:34" (1/3) ... [2022-03-18 12:11:34,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9a6205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:11:34, skipping insertion in model container [2022-03-18 12:11:34,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:11:34" (2/3) ... [2022-03-18 12:11:34,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9a6205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:11:34, skipping insertion in model container [2022-03-18 12:11:34,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:11:34" (3/3) ... [2022-03-18 12:11:34,663 INFO L111 eAbstractionObserver]: Analyzing ICFG up.i [2022-03-18 12:11:34,666 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 12:11:34,667 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 12:11:34,692 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 12:11:34,697 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 12:11:34,697 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 12:11:34,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 12:11:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-18 12:11:34,710 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:34,710 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:34,711 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:34,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:34,714 INFO L85 PathProgramCache]: Analyzing trace with hash 661364838, now seen corresponding path program 1 times [2022-03-18 12:11:34,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:34,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412521488] [2022-03-18 12:11:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:34,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:11:34,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:34,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412521488] [2022-03-18 12:11:34,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412521488] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:11:34,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:11:34,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 12:11:34,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995354813] [2022-03-18 12:11:34,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:11:34,909 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 12:11:34,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:34,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 12:11:34,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-18 12:11:34,927 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:11:35,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:35,027 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-03-18 12:11:35,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 12:11:35,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-18 12:11:35,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:35,032 INFO L225 Difference]: With dead ends: 40 [2022-03-18 12:11:35,032 INFO L226 Difference]: Without dead ends: 18 [2022-03-18 12:11:35,034 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-18 12:11:35,036 INFO L912 BasicCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:35,037 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 33 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:35,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-03-18 12:11:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-03-18 12:11:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 12:11:35,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-03-18 12:11:35,060 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2022-03-18 12:11:35,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:35,060 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-03-18 12:11:35,060 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:11:35,060 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-03-18 12:11:35,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-18 12:11:35,061 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:35,061 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:35,061 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 12:11:35,061 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:35,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:35,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1204460846, now seen corresponding path program 1 times [2022-03-18 12:11:35,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:35,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238288885] [2022-03-18 12:11:35,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:35,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:35,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:11:35,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:35,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238288885] [2022-03-18 12:11:35,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238288885] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:35,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371199316] [2022-03-18 12:11:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:35,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:35,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:35,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:35,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 12:11:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:35,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 12:11:35,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:11:35,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 12:11:35,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371199316] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:11:35,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 12:11:35,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2022-03-18 12:11:35,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054097505] [2022-03-18 12:11:35,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:11:35,330 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 12:11:35,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 12:11:35,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-18 12:11:35,333 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:11:35,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:35,377 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-03-18 12:11:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 12:11:35,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-18 12:11:35,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:35,379 INFO L225 Difference]: With dead ends: 30 [2022-03-18 12:11:35,379 INFO L226 Difference]: Without dead ends: 28 [2022-03-18 12:11:35,380 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-18 12:11:35,380 INFO L912 BasicCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:35,381 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 56 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 12:11:35,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-03-18 12:11:35,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-03-18 12:11:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 12:11:35,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-03-18 12:11:35,393 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2022-03-18 12:11:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:35,393 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-03-18 12:11:35,393 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:11:35,394 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-03-18 12:11:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-18 12:11:35,394 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:35,394 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:35,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:35,611 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:35,611 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:35,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:35,612 INFO L85 PathProgramCache]: Analyzing trace with hash -801413244, now seen corresponding path program 1 times [2022-03-18 12:11:35,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:35,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498206291] [2022-03-18 12:11:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:35,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:35,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 12:11:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:11:35,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:35,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498206291] [2022-03-18 12:11:35,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498206291] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:35,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037020664] [2022-03-18 12:11:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:35,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:35,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:35,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:35,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 12:11:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:35,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 12:11:35,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:11:35,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:11:35,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037020664] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:35,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:35,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-03-18 12:11:35,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412710917] [2022-03-18 12:11:35,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:35,869 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 12:11:35,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 12:11:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-18 12:11:35,870 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 12:11:35,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:35,955 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-03-18 12:11:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 12:11:35,955 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2022-03-18 12:11:35,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:35,957 INFO L225 Difference]: With dead ends: 39 [2022-03-18 12:11:35,957 INFO L226 Difference]: Without dead ends: 25 [2022-03-18 12:11:35,959 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-03-18 12:11:35,961 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:35,962 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 35 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 12:11:35,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-03-18 12:11:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-03-18 12:11:35,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 12:11:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-03-18 12:11:35,967 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2022-03-18 12:11:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:35,967 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-03-18 12:11:35,967 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 12:11:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-03-18 12:11:35,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-18 12:11:35,968 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:35,968 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:35,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-18 12:11:36,187 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 12:11:36,188 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:36,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:36,188 INFO L85 PathProgramCache]: Analyzing trace with hash -447407028, now seen corresponding path program 2 times [2022-03-18 12:11:36,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:36,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875379113] [2022-03-18 12:11:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:36,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:36,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:36,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 12:11:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:11:36,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:36,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875379113] [2022-03-18 12:11:36,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875379113] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:36,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775778464] [2022-03-18 12:11:36,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:11:36,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:36,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:36,292 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:36,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 12:11:36,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:11:36,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:36,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 12:11:36,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:11:36,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:11:36,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775778464] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:36,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:36,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-03-18 12:11:36,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421147864] [2022-03-18 12:11:36,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:36,459 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 12:11:36,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:36,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 12:11:36,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-18 12:11:36,460 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 12:11:36,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:36,566 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-03-18 12:11:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 12:11:36,567 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-03-18 12:11:36,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:36,567 INFO L225 Difference]: With dead ends: 38 [2022-03-18 12:11:36,567 INFO L226 Difference]: Without dead ends: 36 [2022-03-18 12:11:36,568 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-03-18 12:11:36,568 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:36,568 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 35 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:36,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-18 12:11:36,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-03-18 12:11:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 12:11:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-03-18 12:11:36,573 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 22 [2022-03-18 12:11:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:36,573 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-03-18 12:11:36,573 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 12:11:36,573 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-03-18 12:11:36,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-18 12:11:36,574 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:36,574 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:36,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:36,790 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:36,791 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:36,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1525200218, now seen corresponding path program 3 times [2022-03-18 12:11:36,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:36,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364525521] [2022-03-18 12:11:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:36,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 12:11:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:36,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 12:11:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 12:11:36,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:36,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364525521] [2022-03-18 12:11:36,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364525521] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:36,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376331405] [2022-03-18 12:11:36,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:11:36,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:36,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:36,902 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:36,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 12:11:36,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-18 12:11:36,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:36,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-18 12:11:36,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 12:11:37,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 12:11:37,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376331405] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:37,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:37,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 15 [2022-03-18 12:11:37,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330785300] [2022-03-18 12:11:37,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:37,097 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 12:11:37,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:37,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 12:11:37,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-03-18 12:11:37,097 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 12:11:37,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:37,210 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-03-18 12:11:37,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 12:11:37,211 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2022-03-18 12:11:37,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:37,211 INFO L225 Difference]: With dead ends: 50 [2022-03-18 12:11:37,211 INFO L226 Difference]: Without dead ends: 33 [2022-03-18 12:11:37,212 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2022-03-18 12:11:37,212 INFO L912 BasicCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:37,213 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 51 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:37,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-18 12:11:37,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-18 12:11:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 12:11:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-03-18 12:11:37,216 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2022-03-18 12:11:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:37,217 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-03-18 12:11:37,217 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 12:11:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-03-18 12:11:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-18 12:11:37,217 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:37,217 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:37,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-18 12:11:37,438 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:37,439 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:37,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:37,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2068596882, now seen corresponding path program 4 times [2022-03-18 12:11:37,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:37,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544463188] [2022-03-18 12:11:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:37,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:37,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:37,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 12:11:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:37,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 12:11:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 12:11:37,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:37,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544463188] [2022-03-18 12:11:37,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544463188] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817626065] [2022-03-18 12:11:37,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:11:37,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:37,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:37,520 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:37,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 12:11:37,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:11:37,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:37,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 12:11:37,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 12:11:37,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 12:11:37,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817626065] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:37,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:37,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-03-18 12:11:37,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530804050] [2022-03-18 12:11:37,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:37,650 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 12:11:37,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 12:11:37,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-18 12:11:37,651 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 12:11:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:37,774 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2022-03-18 12:11:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 12:11:37,775 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-03-18 12:11:37,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:37,776 INFO L225 Difference]: With dead ends: 46 [2022-03-18 12:11:37,776 INFO L226 Difference]: Without dead ends: 44 [2022-03-18 12:11:37,776 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-03-18 12:11:37,776 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:37,777 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 55 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:37,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-18 12:11:37,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-03-18 12:11:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 12:11:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-03-18 12:11:37,781 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 30 [2022-03-18 12:11:37,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:37,781 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-03-18 12:11:37,781 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 12:11:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-03-18 12:11:37,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-18 12:11:37,782 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:37,782 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:37,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:37,998 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:37,998 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:37,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1039383228, now seen corresponding path program 5 times [2022-03-18 12:11:37,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:37,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856989238] [2022-03-18 12:11:37,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:37,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:38,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 12:11:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:38,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 12:11:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:38,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 12:11:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:38,064 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 12:11:38,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:38,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856989238] [2022-03-18 12:11:38,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856989238] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:38,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005083213] [2022-03-18 12:11:38,064 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:11:38,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:38,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:38,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:38,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-18 12:11:38,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-18 12:11:38,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:38,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-18 12:11:38,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 12:11:38,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 12:11:38,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005083213] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:38,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:38,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 18 [2022-03-18 12:11:38,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731733384] [2022-03-18 12:11:38,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:38,311 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 12:11:38,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:38,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 12:11:38,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-03-18 12:11:38,312 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 12:11:38,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:38,452 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-03-18 12:11:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 12:11:38,453 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 37 [2022-03-18 12:11:38,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:38,454 INFO L225 Difference]: With dead ends: 61 [2022-03-18 12:11:38,454 INFO L226 Difference]: Without dead ends: 41 [2022-03-18 12:11:38,454 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2022-03-18 12:11:38,455 INFO L912 BasicCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:38,455 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 47 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:38,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-18 12:11:38,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-03-18 12:11:38,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 12:11:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-03-18 12:11:38,461 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 37 [2022-03-18 12:11:38,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:38,461 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-03-18 12:11:38,461 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 12:11:38,461 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-03-18 12:11:38,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-18 12:11:38,462 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:38,462 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:38,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:38,683 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:38,684 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:38,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:38,685 INFO L85 PathProgramCache]: Analyzing trace with hash -101488116, now seen corresponding path program 6 times [2022-03-18 12:11:38,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:38,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913334691] [2022-03-18 12:11:38,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:38,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:38,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 12:11:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:38,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 12:11:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:38,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 12:11:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 12:11:38,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:38,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913334691] [2022-03-18 12:11:38,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913334691] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:38,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739893432] [2022-03-18 12:11:38,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:11:38,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:38,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:38,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:38,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-18 12:11:38,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-18 12:11:38,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:38,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 12:11:38,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 12:11:38,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 12:11:39,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739893432] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:39,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:39,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2022-03-18 12:11:39,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6965788] [2022-03-18 12:11:39,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:39,007 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 12:11:39,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:39,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 12:11:39,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-03-18 12:11:39,008 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 12:11:39,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:39,157 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2022-03-18 12:11:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 12:11:39,157 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 38 [2022-03-18 12:11:39,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:39,158 INFO L225 Difference]: With dead ends: 54 [2022-03-18 12:11:39,158 INFO L226 Difference]: Without dead ends: 52 [2022-03-18 12:11:39,159 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-03-18 12:11:39,159 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:39,160 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 40 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:39,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-03-18 12:11:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2022-03-18 12:11:39,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 12:11:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2022-03-18 12:11:39,166 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 38 [2022-03-18 12:11:39,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:39,166 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2022-03-18 12:11:39,166 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 12:11:39,167 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2022-03-18 12:11:39,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 12:11:39,167 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:39,167 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:39,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-18 12:11:39,383 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:39,384 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:39,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:39,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1712981222, now seen corresponding path program 7 times [2022-03-18 12:11:39,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:39,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299862933] [2022-03-18 12:11:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:39,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:39,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:39,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 12:11:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 12:11:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:39,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 12:11:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:39,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 12:11:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 12:11:39,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:39,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299862933] [2022-03-18 12:11:39,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299862933] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:39,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432924678] [2022-03-18 12:11:39,544 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:11:39,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:39,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:39,546 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:39,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-18 12:11:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:39,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-18 12:11:39,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 12:11:39,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 12:11:39,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432924678] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:39,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:39,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 21 [2022-03-18 12:11:39,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035223098] [2022-03-18 12:11:39,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:39,890 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 12:11:39,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 12:11:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-03-18 12:11:39,891 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 12:11:40,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:40,100 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2022-03-18 12:11:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 12:11:40,100 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 45 [2022-03-18 12:11:40,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:40,101 INFO L225 Difference]: With dead ends: 72 [2022-03-18 12:11:40,101 INFO L226 Difference]: Without dead ends: 49 [2022-03-18 12:11:40,102 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2022-03-18 12:11:40,103 INFO L912 BasicCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:40,103 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 48 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-18 12:11:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-03-18 12:11:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 12:11:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-03-18 12:11:40,108 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 45 [2022-03-18 12:11:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:40,109 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-03-18 12:11:40,109 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 12:11:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-03-18 12:11:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-18 12:11:40,109 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:40,109 INFO L500 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:40,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:40,327 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-03-18 12:11:40,327 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:40,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:40,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1007935918, now seen corresponding path program 8 times [2022-03-18 12:11:40,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:40,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906913564] [2022-03-18 12:11:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:40,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:40,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-18 12:11:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:40,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 12:11:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:40,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 12:11:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:40,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 12:11:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 12:11:40,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:40,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906913564] [2022-03-18 12:11:40,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906913564] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:40,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492978280] [2022-03-18 12:11:40,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:11:40,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:40,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:40,432 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:40,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-18 12:11:40,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:11:40,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:40,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-18 12:11:40,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 12:11:40,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-18 12:11:40,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492978280] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:40,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:40,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2022-03-18 12:11:40,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139666459] [2022-03-18 12:11:40,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:40,654 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 12:11:40,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:40,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 12:11:40,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-03-18 12:11:40,655 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 12:11:40,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:40,784 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2022-03-18 12:11:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 12:11:40,784 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 46 [2022-03-18 12:11:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:40,785 INFO L225 Difference]: With dead ends: 62 [2022-03-18 12:11:40,785 INFO L226 Difference]: Without dead ends: 60 [2022-03-18 12:11:40,785 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2022-03-18 12:11:40,786 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 40 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:40,786 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 45 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:40,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-03-18 12:11:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2022-03-18 12:11:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 12:11:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-03-18 12:11:40,790 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 46 [2022-03-18 12:11:40,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:40,791 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-03-18 12:11:40,791 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 12:11:40,791 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-03-18 12:11:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 12:11:40,791 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:40,791 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:40,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:41,008 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-18 12:11:41,009 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:41,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:41,009 INFO L85 PathProgramCache]: Analyzing trace with hash -397143292, now seen corresponding path program 9 times [2022-03-18 12:11:41,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:41,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867826983] [2022-03-18 12:11:41,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:41,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-03-18 12:11:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 12:11:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 12:11:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 12:11:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 12:11:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-18 12:11:41,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:41,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867826983] [2022-03-18 12:11:41,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867826983] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:41,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823488737] [2022-03-18 12:11:41,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:11:41,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:41,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:41,117 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:41,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-18 12:11:41,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-18 12:11:41,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:41,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-18 12:11:41,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-18 12:11:41,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-18 12:11:41,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823488737] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:41,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:41,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 24 [2022-03-18 12:11:41,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082870170] [2022-03-18 12:11:41,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:41,410 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-18 12:11:41,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:41,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-18 12:11:41,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2022-03-18 12:11:41,410 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 24 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 12:11:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:41,589 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2022-03-18 12:11:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 12:11:41,589 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 53 [2022-03-18 12:11:41,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:41,590 INFO L225 Difference]: With dead ends: 83 [2022-03-18 12:11:41,590 INFO L226 Difference]: Without dead ends: 57 [2022-03-18 12:11:41,591 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=1050, Unknown=0, NotChecked=0, Total=1332 [2022-03-18 12:11:41,591 INFO L912 BasicCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:41,591 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 44 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:41,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-03-18 12:11:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-03-18 12:11:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 12:11:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-03-18 12:11:41,596 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 53 [2022-03-18 12:11:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:41,596 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-03-18 12:11:41,596 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 12:11:41,596 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-03-18 12:11:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-18 12:11:41,597 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:41,597 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:41,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:41,811 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-18 12:11:41,811 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:41,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:41,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1512613836, now seen corresponding path program 10 times [2022-03-18 12:11:41,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:41,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813726656] [2022-03-18 12:11:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:41,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 12:11:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 12:11:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 12:11:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 12:11:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 12:11:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-18 12:11:41,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:41,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813726656] [2022-03-18 12:11:41,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813726656] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:41,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667302181] [2022-03-18 12:11:41,901 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:11:41,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:41,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:41,903 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:41,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-18 12:11:41,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:11:41,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:41,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-18 12:11:41,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-18 12:11:42,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-18 12:11:42,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667302181] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:42,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:42,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 15 [2022-03-18 12:11:42,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437328898] [2022-03-18 12:11:42,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:42,109 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 12:11:42,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:42,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 12:11:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-03-18 12:11:42,109 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 7 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 12:11:42,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:42,274 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2022-03-18 12:11:42,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 12:11:42,275 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 7 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 54 [2022-03-18 12:11:42,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:42,275 INFO L225 Difference]: With dead ends: 70 [2022-03-18 12:11:42,275 INFO L226 Difference]: Without dead ends: 68 [2022-03-18 12:11:42,276 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2022-03-18 12:11:42,276 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:42,276 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 45 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:42,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-03-18 12:11:42,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2022-03-18 12:11:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 12:11:42,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2022-03-18 12:11:42,281 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 54 [2022-03-18 12:11:42,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:42,281 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2022-03-18 12:11:42,281 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 7 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 12:11:42,281 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2022-03-18 12:11:42,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-18 12:11:42,282 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:42,282 INFO L500 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:42,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:42,499 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-18 12:11:42,499 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:42,500 INFO L85 PathProgramCache]: Analyzing trace with hash -522727642, now seen corresponding path program 11 times [2022-03-18 12:11:42,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:42,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9734136] [2022-03-18 12:11:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:42,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:42,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:42,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 12:11:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:42,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 12:11:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 12:11:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 12:11:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:42,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 12:11:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:42,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 12:11:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 12:11:42,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:42,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9734136] [2022-03-18 12:11:42,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9734136] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:42,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806977189] [2022-03-18 12:11:42,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:11:42,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:42,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:42,629 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:42,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-18 12:11:42,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-18 12:11:42,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:42,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-18 12:11:42,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 12:11:42,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 12:11:42,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806977189] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:42,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:42,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 27 [2022-03-18 12:11:42,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904204532] [2022-03-18 12:11:42,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:42,999 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-18 12:11:42,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:42,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-18 12:11:43,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2022-03-18 12:11:43,000 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 26 states have internal predecessors, (50), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 12:11:43,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:43,256 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2022-03-18 12:11:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 12:11:43,256 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 26 states have internal predecessors, (50), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 61 [2022-03-18 12:11:43,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:43,257 INFO L225 Difference]: With dead ends: 94 [2022-03-18 12:11:43,257 INFO L226 Difference]: Without dead ends: 65 [2022-03-18 12:11:43,257 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=357, Invalid=1365, Unknown=0, NotChecked=0, Total=1722 [2022-03-18 12:11:43,258 INFO L912 BasicCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:43,258 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 60 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:43,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-03-18 12:11:43,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-03-18 12:11:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 12:11:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2022-03-18 12:11:43,263 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 61 [2022-03-18 12:11:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:43,263 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2022-03-18 12:11:43,263 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 26 states have internal predecessors, (50), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 12:11:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2022-03-18 12:11:43,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 12:11:43,263 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:43,263 INFO L500 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:43,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:43,474 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-18 12:11:43,474 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:43,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:43,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1538319378, now seen corresponding path program 12 times [2022-03-18 12:11:43,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:43,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727697848] [2022-03-18 12:11:43,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:43,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:43,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 12:11:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 12:11:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:43,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 12:11:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:43,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 12:11:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:43,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 12:11:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 12:11:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 12:11:43,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:43,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727697848] [2022-03-18 12:11:43,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727697848] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:43,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477938009] [2022-03-18 12:11:43,582 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:11:43,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:43,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:43,583 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:43,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-18 12:11:43,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-18 12:11:43,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:43,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-18 12:11:43,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 12:11:43,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-18 12:11:43,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477938009] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:43,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:43,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 16 [2022-03-18 12:11:43,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135592611] [2022-03-18 12:11:43,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:43,810 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-18 12:11:43,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:43,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-18 12:11:43,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-03-18 12:11:43,811 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 12:11:43,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:43,988 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2022-03-18 12:11:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 12:11:43,989 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 62 [2022-03-18 12:11:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:43,990 INFO L225 Difference]: With dead ends: 78 [2022-03-18 12:11:43,990 INFO L226 Difference]: Without dead ends: 76 [2022-03-18 12:11:43,990 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2022-03-18 12:11:43,990 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 44 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:43,991 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 40 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:43,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-03-18 12:11:43,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2022-03-18 12:11:43,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-18 12:11:43,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2022-03-18 12:11:43,995 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 62 [2022-03-18 12:11:43,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:43,995 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2022-03-18 12:11:43,995 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-18 12:11:43,995 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2022-03-18 12:11:43,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 12:11:43,996 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:43,996 INFO L500 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:44,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:44,213 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-18 12:11:44,213 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:44,213 INFO L85 PathProgramCache]: Analyzing trace with hash -735129404, now seen corresponding path program 13 times [2022-03-18 12:11:44,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:44,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501936296] [2022-03-18 12:11:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:44,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:44,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-18 12:11:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 12:11:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:44,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 12:11:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:44,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 12:11:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 12:11:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:44,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 12:11:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:11:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:44,383 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-18 12:11:44,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:44,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501936296] [2022-03-18 12:11:44,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501936296] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:44,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670190018] [2022-03-18 12:11:44,384 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:11:44,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:44,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:44,385 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:44,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-18 12:11:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:44,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-18 12:11:44,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-18 12:11:44,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-18 12:11:44,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670190018] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:44,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:44,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 30 [2022-03-18 12:11:44,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119996109] [2022-03-18 12:11:44,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:44,782 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-18 12:11:44,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:44,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-18 12:11:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2022-03-18 12:11:44,783 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 12:11:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:45,079 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2022-03-18 12:11:45,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 12:11:45,080 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 69 [2022-03-18 12:11:45,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:45,081 INFO L225 Difference]: With dead ends: 105 [2022-03-18 12:11:45,081 INFO L226 Difference]: Without dead ends: 73 [2022-03-18 12:11:45,085 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=441, Invalid=1721, Unknown=0, NotChecked=0, Total=2162 [2022-03-18 12:11:45,086 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:45,086 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 46 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-03-18 12:11:45,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-03-18 12:11:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-18 12:11:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-03-18 12:11:45,094 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 69 [2022-03-18 12:11:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:45,094 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-03-18 12:11:45,094 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 29 states have internal predecessors, (55), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 12:11:45,094 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-03-18 12:11:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 12:11:45,096 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:45,096 INFO L500 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:45,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:45,313 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:45,314 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:45,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1460721036, now seen corresponding path program 14 times [2022-03-18 12:11:45,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:45,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685402044] [2022-03-18 12:11:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:45,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:45,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 12:11:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:45,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 12:11:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:45,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 12:11:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:45,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-18 12:11:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:45,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 12:11:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:45,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 12:11:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:45,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:11:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-18 12:11:45,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:45,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685402044] [2022-03-18 12:11:45,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685402044] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:45,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449302725] [2022-03-18 12:11:45,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:11:45,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:45,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:45,465 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:45,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-18 12:11:45,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:11:45,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:45,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-18 12:11:45,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-18 12:11:45,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-18 12:11:45,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449302725] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:45,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:45,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 17 [2022-03-18 12:11:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651408868] [2022-03-18 12:11:45,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:45,780 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-18 12:11:45,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-18 12:11:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-03-18 12:11:45,781 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 9 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 12:11:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:46,053 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2022-03-18 12:11:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-18 12:11:46,054 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 9 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 70 [2022-03-18 12:11:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:46,054 INFO L225 Difference]: With dead ends: 86 [2022-03-18 12:11:46,055 INFO L226 Difference]: Without dead ends: 84 [2022-03-18 12:11:46,055 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2022-03-18 12:11:46,056 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 43 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:46,056 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 50 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:11:46,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-03-18 12:11:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2022-03-18 12:11:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 12:11:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2022-03-18 12:11:46,064 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 70 [2022-03-18 12:11:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:46,065 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2022-03-18 12:11:46,065 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 9 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 12:11:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2022-03-18 12:11:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-18 12:11:46,069 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:46,069 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:46,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:46,286 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-18 12:11:46,286 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:46,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:46,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1934317210, now seen corresponding path program 15 times [2022-03-18 12:11:46,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:46,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136109040] [2022-03-18 12:11:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:46,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 12:11:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:46,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 12:11:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 12:11:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:46,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-18 12:11:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:46,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 12:11:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:46,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 12:11:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:46,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:11:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:11:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-18 12:11:46,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:46,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136109040] [2022-03-18 12:11:46,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136109040] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:46,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895939780] [2022-03-18 12:11:46,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:11:46,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:46,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:46,512 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:46,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-18 12:11:46,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-03-18 12:11:46,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:46,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-18 12:11:46,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-18 12:11:46,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-18 12:11:47,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895939780] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:47,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:47,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 33 [2022-03-18 12:11:47,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992431046] [2022-03-18 12:11:47,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:47,147 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-18 12:11:47,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:47,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-18 12:11:47,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2022-03-18 12:11:47,147 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 32 states have internal predecessors, (60), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 12:11:47,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:47,588 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2022-03-18 12:11:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-18 12:11:47,589 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 32 states have internal predecessors, (60), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 77 [2022-03-18 12:11:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:47,589 INFO L225 Difference]: With dead ends: 116 [2022-03-18 12:11:47,589 INFO L226 Difference]: Without dead ends: 81 [2022-03-18 12:11:47,590 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=534, Invalid=2118, Unknown=0, NotChecked=0, Total=2652 [2022-03-18 12:11:47,591 INFO L912 BasicCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:47,591 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 67 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:11:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-03-18 12:11:47,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-03-18 12:11:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 12:11:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-03-18 12:11:47,598 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 77 [2022-03-18 12:11:47,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:47,598 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-03-18 12:11:47,598 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 32 states have internal predecessors, (60), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 12:11:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-03-18 12:11:47,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-18 12:11:47,599 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:47,599 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:47,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-03-18 12:11:47,816 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-18 12:11:47,816 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:47,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:47,817 INFO L85 PathProgramCache]: Analyzing trace with hash -188127698, now seen corresponding path program 16 times [2022-03-18 12:11:47,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:47,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488779602] [2022-03-18 12:11:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:47,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:47,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:47,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 12:11:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:47,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 12:11:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:47,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 12:11:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:47,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 12:11:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:47,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 12:11:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:47,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 12:11:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:47,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:11:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:47,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:11:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-18 12:11:47,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:47,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488779602] [2022-03-18 12:11:47,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488779602] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:47,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022979501] [2022-03-18 12:11:47,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:11:47,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:47,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:47,984 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:48,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-18 12:11:48,068 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:11:48,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:48,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-18 12:11:48,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-18 12:11:48,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-18 12:11:48,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022979501] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:48,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:48,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 18 [2022-03-18 12:11:48,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95890339] [2022-03-18 12:11:48,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:48,383 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-18 12:11:48,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:48,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-18 12:11:48,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-03-18 12:11:48,383 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-18 12:11:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:48,640 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2022-03-18 12:11:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-18 12:11:48,640 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 78 [2022-03-18 12:11:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:48,644 INFO L225 Difference]: With dead ends: 94 [2022-03-18 12:11:48,644 INFO L226 Difference]: Without dead ends: 92 [2022-03-18 12:11:48,645 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 178 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2022-03-18 12:11:48,649 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 43 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:48,649 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 55 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:48,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-03-18 12:11:48,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2022-03-18 12:11:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-18 12:11:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2022-03-18 12:11:48,674 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 78 [2022-03-18 12:11:48,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:48,674 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2022-03-18 12:11:48,674 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-18 12:11:48,674 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2022-03-18 12:11:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-18 12:11:48,675 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:48,675 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:48,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:48,875 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-18 12:11:48,876 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:48,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:48,876 INFO L85 PathProgramCache]: Analyzing trace with hash -172458364, now seen corresponding path program 17 times [2022-03-18 12:11:48,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:48,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272065296] [2022-03-18 12:11:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:48,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 12:11:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:49,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 12:11:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 12:11:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:49,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 12:11:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:49,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 12:11:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:49,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 12:11:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:11:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:49,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:11:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:49,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:11:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-03-18 12:11:49,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:49,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272065296] [2022-03-18 12:11:49,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272065296] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:49,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068326537] [2022-03-18 12:11:49,132 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:11:49,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:49,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:49,153 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:49,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-18 12:11:49,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-03-18 12:11:49,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:49,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-18 12:11:49,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-03-18 12:11:49,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-03-18 12:11:49,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068326537] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:49,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:49,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 36 [2022-03-18 12:11:49,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654301053] [2022-03-18 12:11:49,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:49,833 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-18 12:11:49,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:49,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-18 12:11:49,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2022-03-18 12:11:49,834 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 35 states have internal predecessors, (65), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-03-18 12:11:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:50,239 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2022-03-18 12:11:50,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-18 12:11:50,239 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 35 states have internal predecessors, (65), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 85 [2022-03-18 12:11:50,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:50,240 INFO L225 Difference]: With dead ends: 127 [2022-03-18 12:11:50,240 INFO L226 Difference]: Without dead ends: 89 [2022-03-18 12:11:50,242 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=636, Invalid=2556, Unknown=0, NotChecked=0, Total=3192 [2022-03-18 12:11:50,242 INFO L912 BasicCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:50,242 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 58 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:11:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-03-18 12:11:50,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-03-18 12:11:50,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-18 12:11:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2022-03-18 12:11:50,249 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 85 [2022-03-18 12:11:50,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:50,268 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2022-03-18 12:11:50,268 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 35 states have internal predecessors, (65), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-03-18 12:11:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2022-03-18 12:11:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-18 12:11:50,269 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:50,269 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:50,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:50,510 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:50,510 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:50,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:50,510 INFO L85 PathProgramCache]: Analyzing trace with hash 549974860, now seen corresponding path program 18 times [2022-03-18 12:11:50,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:50,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071590446] [2022-03-18 12:11:50,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:50,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:50,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:50,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 12:11:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:50,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 12:11:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:50,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 12:11:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 12:11:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:11:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 12:11:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:50,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:11:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:11:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:50,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:11:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-03-18 12:11:50,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:50,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071590446] [2022-03-18 12:11:50,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071590446] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:50,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844103791] [2022-03-18 12:11:50,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:11:50,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:50,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:50,677 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:50,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-18 12:11:50,774 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-03-18 12:11:50,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:50,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 12:11:50,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-03-18 12:11:50,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-03-18 12:11:51,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844103791] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:51,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:51,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 19 [2022-03-18 12:11:51,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874781353] [2022-03-18 12:11:51,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:51,140 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-18 12:11:51,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:51,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-18 12:11:51,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-03-18 12:11:51,141 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 16 states have internal predecessors, (45), 11 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 12:11:51,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:51,388 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2022-03-18 12:11:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-18 12:11:51,388 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 16 states have internal predecessors, (45), 11 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 86 [2022-03-18 12:11:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:51,389 INFO L225 Difference]: With dead ends: 102 [2022-03-18 12:11:51,389 INFO L226 Difference]: Without dead ends: 100 [2022-03-18 12:11:51,390 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 197 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2022-03-18 12:11:51,390 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 56 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:51,390 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 40 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:11:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-03-18 12:11:51,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2022-03-18 12:11:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 12:11:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-03-18 12:11:51,397 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 86 [2022-03-18 12:11:51,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:51,397 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-03-18 12:11:51,397 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 16 states have internal predecessors, (45), 11 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 12:11:51,397 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-03-18 12:11:51,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-18 12:11:51,398 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:51,398 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:51,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:51,618 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:51,619 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:51,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:51,619 INFO L85 PathProgramCache]: Analyzing trace with hash 571773862, now seen corresponding path program 19 times [2022-03-18 12:11:51,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:51,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331624215] [2022-03-18 12:11:51,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:51,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 12:11:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 12:11:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 12:11:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 12:11:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:11:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 12:11:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:11:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:11:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:11:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:11:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 147 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-18 12:11:51,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:51,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331624215] [2022-03-18 12:11:51,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331624215] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:51,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438179618] [2022-03-18 12:11:51,878 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:11:51,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:51,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:51,892 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:51,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-18 12:11:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:51,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-18 12:11:51,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-18 12:11:52,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-18 12:11:52,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438179618] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:52,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:52,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 39 [2022-03-18 12:11:52,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085706531] [2022-03-18 12:11:52,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:52,632 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-18 12:11:52,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:52,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-18 12:11:52,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2022-03-18 12:11:52,634 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-03-18 12:11:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:53,050 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2022-03-18 12:11:53,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-18 12:11:53,051 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 93 [2022-03-18 12:11:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:53,052 INFO L225 Difference]: With dead ends: 138 [2022-03-18 12:11:53,052 INFO L226 Difference]: Without dead ends: 97 [2022-03-18 12:11:53,053 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=747, Invalid=3035, Unknown=0, NotChecked=0, Total=3782 [2022-03-18 12:11:53,054 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:53,054 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 49 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:11:53,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-03-18 12:11:53,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-03-18 12:11:53,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 12:11:53,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2022-03-18 12:11:53,061 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 93 [2022-03-18 12:11:53,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:53,061 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2022-03-18 12:11:53,061 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 38 states have internal predecessors, (70), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-03-18 12:11:53,061 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2022-03-18 12:11:53,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-03-18 12:11:53,062 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:53,062 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:53,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:53,262 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-03-18 12:11:53,263 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:53,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1511604114, now seen corresponding path program 20 times [2022-03-18 12:11:53,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:53,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639282755] [2022-03-18 12:11:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:53,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:53,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 12:11:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 12:11:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:53,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 12:11:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:53,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 12:11:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:53,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 12:11:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:53,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:11:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:53,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:11:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:53,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:11:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:53,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:11:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:53,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:11:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-18 12:11:53,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:53,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639282755] [2022-03-18 12:11:53,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639282755] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:53,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934511666] [2022-03-18 12:11:53,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:11:53,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:53,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:53,456 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:53,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-18 12:11:53,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:11:53,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:53,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-18 12:11:53,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-18 12:11:53,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-03-18 12:11:53,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934511666] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:53,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:53,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 20 [2022-03-18 12:11:53,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750110230] [2022-03-18 12:11:53,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:53,905 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-18 12:11:53,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:53,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-18 12:11:53,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-18 12:11:53,905 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-18 12:11:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:54,261 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2022-03-18 12:11:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 12:11:54,262 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 94 [2022-03-18 12:11:54,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:54,263 INFO L225 Difference]: With dead ends: 110 [2022-03-18 12:11:54,263 INFO L226 Difference]: Without dead ends: 108 [2022-03-18 12:11:54,263 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 216 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=310, Invalid=950, Unknown=0, NotChecked=0, Total=1260 [2022-03-18 12:11:54,264 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 60 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:54,264 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 35 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:11:54,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-03-18 12:11:54,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2022-03-18 12:11:54,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 12:11:54,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2022-03-18 12:11:54,271 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 94 [2022-03-18 12:11:54,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:54,271 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2022-03-18 12:11:54,272 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-18 12:11:54,272 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2022-03-18 12:11:54,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-03-18 12:11:54,272 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:54,272 INFO L500 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:54,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:54,473 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-18 12:11:54,473 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:54,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:54,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1544363076, now seen corresponding path program 21 times [2022-03-18 12:11:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:54,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200783425] [2022-03-18 12:11:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:54,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 12:11:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 12:11:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 12:11:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 12:11:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 12:11:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:11:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:11:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:11:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:11:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:11:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:11:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 178 proven. 97 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-03-18 12:11:54,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:54,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200783425] [2022-03-18 12:11:54,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200783425] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:54,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242779044] [2022-03-18 12:11:54,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:11:54,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:54,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:54,926 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:54,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-18 12:11:54,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-03-18 12:11:54,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:54,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-18 12:11:54,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-03-18 12:11:55,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-03-18 12:11:55,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242779044] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:55,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:55,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 42 [2022-03-18 12:11:55,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709933131] [2022-03-18 12:11:55,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:55,860 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-18 12:11:55,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:55,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-18 12:11:55,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=1338, Unknown=0, NotChecked=0, Total=1722 [2022-03-18 12:11:55,861 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 42 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 41 states have internal predecessors, (75), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-18 12:11:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:56,612 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2022-03-18 12:11:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-18 12:11:56,612 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 41 states have internal predecessors, (75), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 101 [2022-03-18 12:11:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:56,613 INFO L225 Difference]: With dead ends: 149 [2022-03-18 12:11:56,613 INFO L226 Difference]: Without dead ends: 105 [2022-03-18 12:11:56,614 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=867, Invalid=3555, Unknown=0, NotChecked=0, Total=4422 [2022-03-18 12:11:56,615 INFO L912 BasicCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:56,615 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 50 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:11:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-03-18 12:11:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-03-18 12:11:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 12:11:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-03-18 12:11:56,622 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 101 [2022-03-18 12:11:56,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:56,622 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-03-18 12:11:56,622 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.7857142857142858) internal successors, (75), 41 states have internal predecessors, (75), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-18 12:11:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-03-18 12:11:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-18 12:11:56,623 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:56,623 INFO L500 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:56,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:56,824 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:56,824 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:56,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2039873268, now seen corresponding path program 22 times [2022-03-18 12:11:56,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:56,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209164404] [2022-03-18 12:11:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:56,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:56,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 12:11:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 12:11:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 12:11:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 12:11:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 12:11:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:57,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 12:11:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:11:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:11:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:11:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:11:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:57,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:11:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-03-18 12:11:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:57,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209164404] [2022-03-18 12:11:57,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209164404] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:57,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355766819] [2022-03-18 12:11:57,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:11:57,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:57,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:57,031 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:57,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-18 12:11:57,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:11:57,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:57,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-18 12:11:57,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-03-18 12:11:57,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-03-18 12:11:57,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355766819] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:57,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:57,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 21 [2022-03-18 12:11:57,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701944037] [2022-03-18 12:11:57,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:57,552 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 12:11:57,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:57,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 12:11:57,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-03-18 12:11:57,553 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 18 states have internal predecessors, (51), 13 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 12:11:57,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:57,854 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2022-03-18 12:11:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-18 12:11:57,855 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 18 states have internal predecessors, (51), 13 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 102 [2022-03-18 12:11:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:57,856 INFO L225 Difference]: With dead ends: 118 [2022-03-18 12:11:57,856 INFO L226 Difference]: Without dead ends: 116 [2022-03-18 12:11:57,856 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-03-18 12:11:57,857 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 54 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:57,857 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 30 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:11:57,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-03-18 12:11:57,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2022-03-18 12:11:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 12:11:57,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2022-03-18 12:11:57,864 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 102 [2022-03-18 12:11:57,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:57,864 INFO L478 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2022-03-18 12:11:57,864 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 18 states have internal predecessors, (51), 13 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 12:11:57,865 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2022-03-18 12:11:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-18 12:11:57,865 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:57,865 INFO L500 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:57,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-18 12:11:58,082 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:58,082 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:11:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:11:58,083 INFO L85 PathProgramCache]: Analyzing trace with hash -631534106, now seen corresponding path program 23 times [2022-03-18 12:11:58,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:11:58,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199773957] [2022-03-18 12:11:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:11:58,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:11:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:11:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 12:11:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 12:11:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 12:11:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 12:11:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 12:11:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 12:11:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:11:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:11:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:11:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:11:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:11:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:11:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:11:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 212 proven. 112 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-18 12:11:58,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:11:58,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199773957] [2022-03-18 12:11:58,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199773957] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:11:58,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335036715] [2022-03-18 12:11:58,418 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:11:58,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:11:58,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:11:58,425 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:11:58,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-18 12:11:58,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-03-18 12:11:58,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:11:58,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-18 12:11:58,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:11:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-18 12:11:59,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:11:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-18 12:11:59,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335036715] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:11:59,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:11:59,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 45 [2022-03-18 12:11:59,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378496437] [2022-03-18 12:11:59,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:11:59,276 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-18 12:11:59,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:11:59,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-18 12:11:59,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=1539, Unknown=0, NotChecked=0, Total=1980 [2022-03-18 12:11:59,277 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 44 states have internal predecessors, (80), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-03-18 12:11:59,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:11:59,802 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2022-03-18 12:11:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-18 12:11:59,802 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 44 states have internal predecessors, (80), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 109 [2022-03-18 12:11:59,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:11:59,803 INFO L225 Difference]: With dead ends: 160 [2022-03-18 12:11:59,803 INFO L226 Difference]: Without dead ends: 113 [2022-03-18 12:11:59,805 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=996, Invalid=4116, Unknown=0, NotChecked=0, Total=5112 [2022-03-18 12:11:59,805 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:11:59,807 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 86 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:11:59,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-03-18 12:11:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-03-18 12:11:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 states have internal predecessors, (85), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 12:11:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2022-03-18 12:11:59,824 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 109 [2022-03-18 12:11:59,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:11:59,824 INFO L478 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2022-03-18 12:11:59,825 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 44 states have internal predecessors, (80), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-03-18 12:11:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2022-03-18 12:11:59,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-18 12:11:59,826 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:11:59,826 INFO L500 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:11:59,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:00,040 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-18 12:12:00,041 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:00,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:00,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1324668242, now seen corresponding path program 24 times [2022-03-18 12:12:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:00,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794862674] [2022-03-18 12:12:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:00,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 12:12:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 12:12:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 12:12:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 12:12:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 12:12:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:12:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:12:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:12:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:12:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:12:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:12:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:12:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-18 12:12:00,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:00,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794862674] [2022-03-18 12:12:00,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794862674] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:00,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347995147] [2022-03-18 12:12:00,227 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:12:00,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:00,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:00,244 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:00,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-18 12:12:00,326 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-03-18 12:12:00,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:00,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-18 12:12:00,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-18 12:12:00,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-03-18 12:12:00,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347995147] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:00,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:00,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 22 [2022-03-18 12:12:00,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284161542] [2022-03-18 12:12:00,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:00,625 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-18 12:12:00,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:00,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-18 12:12:00,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2022-03-18 12:12:00,626 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 19 states have internal predecessors, (54), 14 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 12:12:00,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:00,928 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2022-03-18 12:12:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 12:12:00,928 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 19 states have internal predecessors, (54), 14 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 110 [2022-03-18 12:12:00,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:00,930 INFO L225 Difference]: With dead ends: 126 [2022-03-18 12:12:00,930 INFO L226 Difference]: Without dead ends: 124 [2022-03-18 12:12:00,930 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 254 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1163, Unknown=0, NotChecked=0, Total=1560 [2022-03-18 12:12:00,931 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 60 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:00,932 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 35 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:00,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-03-18 12:12:00,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2022-03-18 12:12:00,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-18 12:12:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2022-03-18 12:12:00,942 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 110 [2022-03-18 12:12:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:00,945 INFO L478 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2022-03-18 12:12:00,945 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 19 states have internal predecessors, (54), 14 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 12:12:00,945 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2022-03-18 12:12:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-03-18 12:12:00,946 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:00,946 INFO L500 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:00,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:01,169 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-18 12:12:01,169 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:01,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:01,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1967696388, now seen corresponding path program 25 times [2022-03-18 12:12:01,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:01,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403432615] [2022-03-18 12:12:01,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:01,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 12:12:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 12:12:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 12:12:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 12:12:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 12:12:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:12:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:12:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:12:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:12:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:12:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:12:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:12:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:12:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 249 proven. 128 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-18 12:12:01,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:01,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403432615] [2022-03-18 12:12:01,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403432615] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:01,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251329303] [2022-03-18 12:12:01,528 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:12:01,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:01,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:01,557 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:01,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-18 12:12:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:01,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-18 12:12:01,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-18 12:12:02,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-18 12:12:02,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251329303] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:02,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:02,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 48 [2022-03-18 12:12:02,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821143697] [2022-03-18 12:12:02,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:02,486 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-18 12:12:02,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:02,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-18 12:12:02,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2022-03-18 12:12:02,487 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 47 states have internal predecessors, (85), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-03-18 12:12:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:03,066 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2022-03-18 12:12:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-18 12:12:03,067 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 47 states have internal predecessors, (85), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 117 [2022-03-18 12:12:03,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:03,068 INFO L225 Difference]: With dead ends: 171 [2022-03-18 12:12:03,068 INFO L226 Difference]: Without dead ends: 121 [2022-03-18 12:12:03,070 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1134, Invalid=4718, Unknown=0, NotChecked=0, Total=5852 [2022-03-18 12:12:03,070 INFO L912 BasicCegarLoop]: 25 mSDtfsCounter, 21 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:03,070 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 52 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-03-18 12:12:03,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-03-18 12:12:03,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 90 states have internal predecessors, (91), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-18 12:12:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2022-03-18 12:12:03,081 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 117 [2022-03-18 12:12:03,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:03,081 INFO L478 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2022-03-18 12:12:03,082 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 47 states have internal predecessors, (85), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-03-18 12:12:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2022-03-18 12:12:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-03-18 12:12:03,083 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:03,083 INFO L500 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:03,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:03,307 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-18 12:12:03,308 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:03,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:03,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1240269108, now seen corresponding path program 26 times [2022-03-18 12:12:03,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:03,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023158794] [2022-03-18 12:12:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:03,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 12:12:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 12:12:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 12:12:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 12:12:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 12:12:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:12:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:12:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:12:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:12:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:12:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:12:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:12:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:12:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-18 12:12:03,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:03,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023158794] [2022-03-18 12:12:03,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023158794] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:03,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982076691] [2022-03-18 12:12:03,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:12:03,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:03,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:03,502 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:03,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-18 12:12:03,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:12:03,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:03,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-18 12:12:03,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-18 12:12:03,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-18 12:12:03,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982076691] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:03,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:03,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 23 [2022-03-18 12:12:03,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846958967] [2022-03-18 12:12:03,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:03,902 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-18 12:12:03,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:03,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-18 12:12:03,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2022-03-18 12:12:03,903 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 20 states have internal predecessors, (57), 15 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 12:12:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:04,171 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2022-03-18 12:12:04,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-18 12:12:04,171 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 20 states have internal predecessors, (57), 15 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 118 [2022-03-18 12:12:04,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:04,172 INFO L225 Difference]: With dead ends: 134 [2022-03-18 12:12:04,173 INFO L226 Difference]: Without dead ends: 132 [2022-03-18 12:12:04,174 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 273 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2022-03-18 12:12:04,175 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 64 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:04,175 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 40 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:12:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-03-18 12:12:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2022-03-18 12:12:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 12:12:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2022-03-18 12:12:04,190 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 118 [2022-03-18 12:12:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:04,191 INFO L478 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2022-03-18 12:12:04,191 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 20 states have internal predecessors, (57), 15 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-18 12:12:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2022-03-18 12:12:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-03-18 12:12:04,191 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:04,192 INFO L500 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:04,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:04,415 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-18 12:12:04,416 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:04,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1343383514, now seen corresponding path program 27 times [2022-03-18 12:12:04,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:04,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753270813] [2022-03-18 12:12:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-18 12:12:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 12:12:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 12:12:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 12:12:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 12:12:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:12:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:12:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:12:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:12:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:12:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:12:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:12:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:12:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:12:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 289 proven. 145 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-03-18 12:12:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:04,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753270813] [2022-03-18 12:12:04,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753270813] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:04,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382314421] [2022-03-18 12:12:04,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:12:04,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:04,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:04,760 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:04,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-18 12:12:04,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-03-18 12:12:04,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:04,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-18 12:12:04,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-03-18 12:12:05,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-03-18 12:12:05,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382314421] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:05,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:05,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 51 [2022-03-18 12:12:05,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762727076] [2022-03-18 12:12:05,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:05,477 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-18 12:12:05,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:05,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-18 12:12:05,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=1983, Unknown=0, NotChecked=0, Total=2550 [2022-03-18 12:12:05,479 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 50 states have internal predecessors, (90), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-03-18 12:12:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:05,973 INFO L93 Difference]: Finished difference Result 182 states and 198 transitions. [2022-03-18 12:12:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-18 12:12:05,973 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 50 states have internal predecessors, (90), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 125 [2022-03-18 12:12:05,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:05,974 INFO L225 Difference]: With dead ends: 182 [2022-03-18 12:12:05,974 INFO L226 Difference]: Without dead ends: 129 [2022-03-18 12:12:05,976 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1787 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1281, Invalid=5361, Unknown=0, NotChecked=0, Total=6642 [2022-03-18 12:12:05,977 INFO L912 BasicCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:05,977 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 63 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-03-18 12:12:05,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-03-18 12:12:05,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 96 states have internal predecessors, (97), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 12:12:05,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2022-03-18 12:12:05,990 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 125 [2022-03-18 12:12:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:05,990 INFO L478 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2022-03-18 12:12:05,990 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 50 states have internal predecessors, (90), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-03-18 12:12:05,991 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2022-03-18 12:12:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-03-18 12:12:05,991 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:05,991 INFO L500 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:06,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-18 12:12:06,215 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-18 12:12:06,216 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash -795171602, now seen corresponding path program 28 times [2022-03-18 12:12:06,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:06,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526463141] [2022-03-18 12:12:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:06,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 12:12:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 12:12:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-18 12:12:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 12:12:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 12:12:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:12:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:12:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:12:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:12:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:12:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:12:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:12:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:12:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:12:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:06,426 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-03-18 12:12:06,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:06,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526463141] [2022-03-18 12:12:06,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526463141] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:06,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413982329] [2022-03-18 12:12:06,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:12:06,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:06,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:06,444 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:06,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-18 12:12:06,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:12:06,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:06,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-18 12:12:06,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-03-18 12:12:06,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-03-18 12:12:06,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413982329] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:06,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:06,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 24 [2022-03-18 12:12:06,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887895703] [2022-03-18 12:12:06,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:06,832 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-18 12:12:06,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:06,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-18 12:12:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-03-18 12:12:06,833 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 24 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 16 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-18 12:12:07,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:07,140 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2022-03-18 12:12:07,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-18 12:12:07,141 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 16 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 126 [2022-03-18 12:12:07,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:07,142 INFO L225 Difference]: With dead ends: 142 [2022-03-18 12:12:07,142 INFO L226 Difference]: Without dead ends: 140 [2022-03-18 12:12:07,142 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 292 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=1396, Unknown=0, NotChecked=0, Total=1892 [2022-03-18 12:12:07,143 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 66 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:07,143 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 45 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:12:07,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-03-18 12:12:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2022-03-18 12:12:07,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-03-18 12:12:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2022-03-18 12:12:07,153 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 126 [2022-03-18 12:12:07,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:07,154 INFO L478 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2022-03-18 12:12:07,154 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 16 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-18 12:12:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2022-03-18 12:12:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-03-18 12:12:07,155 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:07,155 INFO L500 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:07,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:07,378 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:07,378 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:07,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:07,379 INFO L85 PathProgramCache]: Analyzing trace with hash -830003260, now seen corresponding path program 29 times [2022-03-18 12:12:07,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:07,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700656518] [2022-03-18 12:12:07,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:07,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-18 12:12:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 12:12:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-18 12:12:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 12:12:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 12:12:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:12:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:12:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:12:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:12:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:12:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:12:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:12:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:12:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:12:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:12:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 332 proven. 163 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-18 12:12:07,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:07,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700656518] [2022-03-18 12:12:07,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700656518] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:07,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653727414] [2022-03-18 12:12:07,829 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:12:07,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:07,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:07,830 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:07,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-18 12:12:07,892 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-03-18 12:12:07,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:07,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-18 12:12:07,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-18 12:12:08,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-18 12:12:08,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653727414] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:08,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:08,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 54 [2022-03-18 12:12:08,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501874226] [2022-03-18 12:12:08,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:08,774 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-18 12:12:08,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:08,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-18 12:12:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=2226, Unknown=0, NotChecked=0, Total=2862 [2022-03-18 12:12:08,775 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 54 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 53 states have internal predecessors, (95), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-18 12:12:09,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:09,439 INFO L93 Difference]: Finished difference Result 193 states and 210 transitions. [2022-03-18 12:12:09,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-18 12:12:09,440 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 53 states have internal predecessors, (95), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 133 [2022-03-18 12:12:09,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:09,440 INFO L225 Difference]: With dead ends: 193 [2022-03-18 12:12:09,440 INFO L226 Difference]: Without dead ends: 137 [2022-03-18 12:12:09,441 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 279 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1437, Invalid=6045, Unknown=0, NotChecked=0, Total=7482 [2022-03-18 12:12:09,441 INFO L912 BasicCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:09,442 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 79 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:09,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-03-18 12:12:09,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-03-18 12:12:09,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 102 states have internal predecessors, (103), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-03-18 12:12:09,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2022-03-18 12:12:09,449 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 133 [2022-03-18 12:12:09,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:09,449 INFO L478 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2022-03-18 12:12:09,449 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 53 states have internal predecessors, (95), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-18 12:12:09,449 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2022-03-18 12:12:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-03-18 12:12:09,450 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:09,450 INFO L500 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:09,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:09,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-03-18 12:12:09,667 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:09,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:09,667 INFO L85 PathProgramCache]: Analyzing trace with hash -52499316, now seen corresponding path program 30 times [2022-03-18 12:12:09,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:09,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340828030] [2022-03-18 12:12:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:09,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 12:12:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 12:12:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 12:12:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 12:12:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 12:12:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:12:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:12:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:12:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:12:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:12:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:12:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:12:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:12:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:12:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:12:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-18 12:12:09,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:09,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340828030] [2022-03-18 12:12:09,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340828030] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:09,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100031015] [2022-03-18 12:12:09,887 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:12:09,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:09,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:09,888 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:09,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-18 12:12:09,962 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2022-03-18 12:12:09,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:09,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-18 12:12:09,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-18 12:12:10,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-18 12:12:10,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100031015] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:10,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:10,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 25 [2022-03-18 12:12:10,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765677941] [2022-03-18 12:12:10,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:10,411 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-18 12:12:10,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:10,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-18 12:12:10,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2022-03-18 12:12:10,412 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 17 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 12:12:10,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:10,740 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2022-03-18 12:12:10,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-18 12:12:10,740 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 17 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 134 [2022-03-18 12:12:10,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:10,741 INFO L225 Difference]: With dead ends: 150 [2022-03-18 12:12:10,741 INFO L226 Difference]: Without dead ends: 148 [2022-03-18 12:12:10,741 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 311 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=550, Invalid=1520, Unknown=0, NotChecked=0, Total=2070 [2022-03-18 12:12:10,742 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 64 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:10,742 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 40 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:10,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-03-18 12:12:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2022-03-18 12:12:10,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 12:12:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2022-03-18 12:12:10,749 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 134 [2022-03-18 12:12:10,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:10,749 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2022-03-18 12:12:10,749 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 17 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 12:12:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2022-03-18 12:12:10,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-18 12:12:10,750 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:10,750 INFO L500 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:10,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:10,970 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:10,970 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:10,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:10,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1641106842, now seen corresponding path program 31 times [2022-03-18 12:12:10,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:10,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164458695] [2022-03-18 12:12:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:10,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 12:12:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 12:12:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 12:12:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 12:12:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 12:12:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:12:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:12:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:12:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:12:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:12:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:12:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:12:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:12:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:12:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:12:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:12:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 378 proven. 182 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-03-18 12:12:11,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:11,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164458695] [2022-03-18 12:12:11,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164458695] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:11,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262537286] [2022-03-18 12:12:11,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:12:11,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:11,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:11,302 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:11,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-18 12:12:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:11,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-18 12:12:11,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-03-18 12:12:11,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-03-18 12:12:12,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262537286] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:12,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:12,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 57 [2022-03-18 12:12:12,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941629672] [2022-03-18 12:12:12,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:12,013 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-18 12:12:12,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:12,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-18 12:12:12,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=709, Invalid=2483, Unknown=0, NotChecked=0, Total=3192 [2022-03-18 12:12:12,014 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 56 states have internal predecessors, (100), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-18 12:12:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:12,766 INFO L93 Difference]: Finished difference Result 204 states and 222 transitions. [2022-03-18 12:12:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-18 12:12:12,766 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 56 states have internal predecessors, (100), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 141 [2022-03-18 12:12:12,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:12,767 INFO L225 Difference]: With dead ends: 204 [2022-03-18 12:12:12,767 INFO L226 Difference]: Without dead ends: 145 [2022-03-18 12:12:12,768 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2265 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1602, Invalid=6770, Unknown=0, NotChecked=0, Total=8372 [2022-03-18 12:12:12,768 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:12,768 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 75 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:12:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-03-18 12:12:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-03-18 12:12:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 108 states have internal predecessors, (109), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 12:12:12,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2022-03-18 12:12:12,777 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 141 [2022-03-18 12:12:12,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:12,777 INFO L478 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2022-03-18 12:12:12,777 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 56 states have internal predecessors, (100), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-18 12:12:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2022-03-18 12:12:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-03-18 12:12:12,778 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:12,778 INFO L500 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:12,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:12,995 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:12,995 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:12,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:12,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1074188498, now seen corresponding path program 32 times [2022-03-18 12:12:12,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:12,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608619228] [2022-03-18 12:12:12,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:12,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 12:12:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 12:12:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 12:12:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:12:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 12:12:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:12:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:12:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:12:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:12:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:12:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:12:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:12:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:12:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:12:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:12:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:12:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-03-18 12:12:13,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:13,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608619228] [2022-03-18 12:12:13,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608619228] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:13,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508358809] [2022-03-18 12:12:13,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:12:13,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:13,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:13,224 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:13,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-18 12:12:13,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:12:13,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:13,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 37 conjunts are in the unsatisfiable core [2022-03-18 12:12:13,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-03-18 12:12:13,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-03-18 12:12:13,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508358809] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:13,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:13,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 26 [2022-03-18 12:12:13,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277055592] [2022-03-18 12:12:13,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:13,739 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-18 12:12:13,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:13,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-18 12:12:13,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2022-03-18 12:12:13,740 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-03-18 12:12:14,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:14,084 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2022-03-18 12:12:14,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-18 12:12:14,084 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 142 [2022-03-18 12:12:14,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:14,085 INFO L225 Difference]: With dead ends: 158 [2022-03-18 12:12:14,085 INFO L226 Difference]: Without dead ends: 156 [2022-03-18 12:12:14,085 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 330 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=607, Invalid=1649, Unknown=0, NotChecked=0, Total=2256 [2022-03-18 12:12:14,085 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 66 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:14,085 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 55 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-03-18 12:12:14,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2022-03-18 12:12:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-03-18 12:12:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2022-03-18 12:12:14,095 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 142 [2022-03-18 12:12:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:14,095 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2022-03-18 12:12:14,095 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-03-18 12:12:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2022-03-18 12:12:14,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-03-18 12:12:14,096 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:14,096 INFO L500 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:14,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:14,309 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-03-18 12:12:14,309 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:14,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash -739994236, now seen corresponding path program 33 times [2022-03-18 12:12:14,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:14,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852707380] [2022-03-18 12:12:14,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:14,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 12:12:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 12:12:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 12:12:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:12:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 12:12:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:12:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:12:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:12:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:12:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:12:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:12:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:12:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:12:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:12:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:12:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:12:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:12:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 427 proven. 202 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-03-18 12:12:14,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:14,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852707380] [2022-03-18 12:12:14,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852707380] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:14,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320111417] [2022-03-18 12:12:14,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:12:14,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:14,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:14,798 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:14,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-18 12:12:14,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-03-18 12:12:14,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:14,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-18 12:12:14,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-03-18 12:12:15,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-03-18 12:12:15,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320111417] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:15,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:15,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 60 [2022-03-18 12:12:15,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334479763] [2022-03-18 12:12:15,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:15,806 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-03-18 12:12:15,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:15,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-03-18 12:12:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=786, Invalid=2754, Unknown=0, NotChecked=0, Total=3540 [2022-03-18 12:12:15,807 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 60 states, 60 states have (on average 1.75) internal successors, (105), 59 states have internal predecessors, (105), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-03-18 12:12:16,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:16,830 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2022-03-18 12:12:16,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-18 12:12:16,830 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.75) internal successors, (105), 59 states have internal predecessors, (105), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 149 [2022-03-18 12:12:16,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:16,831 INFO L225 Difference]: With dead ends: 215 [2022-03-18 12:12:16,831 INFO L226 Difference]: Without dead ends: 153 [2022-03-18 12:12:16,832 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2525 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1776, Invalid=7536, Unknown=0, NotChecked=0, Total=9312 [2022-03-18 12:12:16,833 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:16,833 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 96 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:12:16,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-03-18 12:12:16,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-03-18 12:12:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 114 states have internal predecessors, (115), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-03-18 12:12:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2022-03-18 12:12:16,844 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 149 [2022-03-18 12:12:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:16,844 INFO L478 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2022-03-18 12:12:16,844 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.75) internal successors, (105), 59 states have internal predecessors, (105), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-03-18 12:12:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2022-03-18 12:12:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-03-18 12:12:16,845 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:16,845 INFO L500 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:16,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:17,045 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-03-18 12:12:17,046 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:17,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2031498676, now seen corresponding path program 34 times [2022-03-18 12:12:17,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:17,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963659276] [2022-03-18 12:12:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:17,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 12:12:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 12:12:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 12:12:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 12:12:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:12:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:12:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:12:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:12:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:12:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:12:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:12:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:12:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:12:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:12:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:12:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:12:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:12:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-03-18 12:12:17,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:17,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963659276] [2022-03-18 12:12:17,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963659276] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:17,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29508341] [2022-03-18 12:12:17,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:12:17,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:17,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:17,460 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:17,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-18 12:12:17,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:12:17,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:17,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 39 conjunts are in the unsatisfiable core [2022-03-18 12:12:17,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-03-18 12:12:17,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-03-18 12:12:18,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29508341] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:18,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:18,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 27 [2022-03-18 12:12:18,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677786487] [2022-03-18 12:12:18,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:18,083 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-18 12:12:18,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:18,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-18 12:12:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2022-03-18 12:12:18,084 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 24 states have internal predecessors, (69), 19 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 12:12:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:18,440 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2022-03-18 12:12:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-18 12:12:18,440 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 24 states have internal predecessors, (69), 19 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 150 [2022-03-18 12:12:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:18,441 INFO L225 Difference]: With dead ends: 166 [2022-03-18 12:12:18,441 INFO L226 Difference]: Without dead ends: 164 [2022-03-18 12:12:18,441 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 349 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=667, Invalid=1783, Unknown=0, NotChecked=0, Total=2450 [2022-03-18 12:12:18,442 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 68 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:18,442 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 50 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:18,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-03-18 12:12:18,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2022-03-18 12:12:18,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-03-18 12:12:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2022-03-18 12:12:18,468 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 150 [2022-03-18 12:12:18,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:18,468 INFO L478 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2022-03-18 12:12:18,468 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 24 states have internal predecessors, (69), 19 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 12:12:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2022-03-18 12:12:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-03-18 12:12:18,469 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:18,469 INFO L500 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:18,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:18,686 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-03-18 12:12:18,686 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash -511517530, now seen corresponding path program 35 times [2022-03-18 12:12:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:18,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856726965] [2022-03-18 12:12:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:18,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-18 12:12:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 12:12:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 12:12:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 12:12:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:12:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:12:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:12:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:12:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:12:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:12:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:12:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:12:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:12:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:12:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:12:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:12:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:12:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:12:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 479 proven. 223 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-03-18 12:12:19,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:19,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856726965] [2022-03-18 12:12:19,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856726965] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:19,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626683685] [2022-03-18 12:12:19,206 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:12:19,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:19,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:19,208 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:19,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-18 12:12:19,338 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2022-03-18 12:12:19,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:19,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-18 12:12:19,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-03-18 12:12:20,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-03-18 12:12:20,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626683685] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:20,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:20,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 63 [2022-03-18 12:12:20,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627553449] [2022-03-18 12:12:20,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:20,343 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-18 12:12:20,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:20,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-18 12:12:20,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=867, Invalid=3039, Unknown=0, NotChecked=0, Total=3906 [2022-03-18 12:12:20,344 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 63 states, 63 states have (on average 1.746031746031746) internal successors, (110), 62 states have internal predecessors, (110), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-03-18 12:12:20,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:20,966 INFO L93 Difference]: Finished difference Result 226 states and 246 transitions. [2022-03-18 12:12:20,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-18 12:12:20,966 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.746031746031746) internal successors, (110), 62 states have internal predecessors, (110), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 157 [2022-03-18 12:12:20,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:20,967 INFO L225 Difference]: With dead ends: 226 [2022-03-18 12:12:20,967 INFO L226 Difference]: Without dead ends: 161 [2022-03-18 12:12:20,969 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2799 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1959, Invalid=8343, Unknown=0, NotChecked=0, Total=10302 [2022-03-18 12:12:20,969 INFO L912 BasicCegarLoop]: 30 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:20,969 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 92 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:20,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-03-18 12:12:20,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-03-18 12:12:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 120 states have internal predecessors, (121), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-03-18 12:12:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2022-03-18 12:12:20,979 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 157 [2022-03-18 12:12:20,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:20,979 INFO L478 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2022-03-18 12:12:20,979 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.746031746031746) internal successors, (110), 62 states have internal predecessors, (110), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-03-18 12:12:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2022-03-18 12:12:20,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-03-18 12:12:20,979 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:20,979 INFO L500 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:21,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:21,196 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:21,197 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:21,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:21,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2072693102, now seen corresponding path program 36 times [2022-03-18 12:12:21,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:21,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475032448] [2022-03-18 12:12:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:21,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 12:12:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 12:12:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 12:12:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 12:12:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 12:12:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:12:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:12:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:12:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:12:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:12:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:12:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:12:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:12:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:12:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:12:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:12:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:12:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:12:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-03-18 12:12:21,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:21,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475032448] [2022-03-18 12:12:21,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475032448] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:21,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010056637] [2022-03-18 12:12:21,461 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:12:21,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:21,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:21,462 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:21,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-18 12:12:21,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-03-18 12:12:21,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:21,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-18 12:12:21,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-03-18 12:12:21,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-03-18 12:12:22,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010056637] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:22,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:22,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 28 [2022-03-18 12:12:22,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884299764] [2022-03-18 12:12:22,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:22,136 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-18 12:12:22,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:22,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-18 12:12:22,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=510, Unknown=0, NotChecked=0, Total=756 [2022-03-18 12:12:22,137 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 25 states have internal predecessors, (72), 20 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-03-18 12:12:22,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:22,474 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2022-03-18 12:12:22,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-18 12:12:22,474 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 25 states have internal predecessors, (72), 20 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 158 [2022-03-18 12:12:22,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:22,475 INFO L225 Difference]: With dead ends: 174 [2022-03-18 12:12:22,475 INFO L226 Difference]: Without dead ends: 172 [2022-03-18 12:12:22,476 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 368 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=730, Invalid=1922, Unknown=0, NotChecked=0, Total=2652 [2022-03-18 12:12:22,476 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 72 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:22,476 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 40 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:22,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-03-18 12:12:22,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2022-03-18 12:12:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 125 states have internal predecessors, (126), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-03-18 12:12:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2022-03-18 12:12:22,489 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 158 [2022-03-18 12:12:22,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:22,489 INFO L478 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2022-03-18 12:12:22,489 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 25 states have internal predecessors, (72), 20 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-03-18 12:12:22,489 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2022-03-18 12:12:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-03-18 12:12:22,490 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:22,490 INFO L500 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:22,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:22,714 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-18 12:12:22,715 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:22,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:22,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1870859452, now seen corresponding path program 37 times [2022-03-18 12:12:22,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:22,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468007008] [2022-03-18 12:12:22,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:22,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-18 12:12:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 12:12:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 12:12:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 12:12:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 12:12:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:12:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:12:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:12:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:12:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:12:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:12:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:12:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:12:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:12:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:12:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:12:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:12:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:12:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:12:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 534 proven. 245 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-03-18 12:12:23,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:23,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468007008] [2022-03-18 12:12:23,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468007008] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:23,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232715530] [2022-03-18 12:12:23,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:12:23,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:23,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:23,335 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:23,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-18 12:12:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:23,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-18 12:12:23,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-03-18 12:12:24,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-03-18 12:12:24,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232715530] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:24,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:24,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 66 [2022-03-18 12:12:24,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865539401] [2022-03-18 12:12:24,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:24,637 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-03-18 12:12:24,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:24,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-03-18 12:12:24,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=952, Invalid=3338, Unknown=0, NotChecked=0, Total=4290 [2022-03-18 12:12:24,638 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 66 states, 66 states have (on average 1.7424242424242424) internal successors, (115), 65 states have internal predecessors, (115), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-03-18 12:12:25,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:25,487 INFO L93 Difference]: Finished difference Result 237 states and 258 transitions. [2022-03-18 12:12:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-18 12:12:25,487 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.7424242424242424) internal successors, (115), 65 states have internal predecessors, (115), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 165 [2022-03-18 12:12:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:25,488 INFO L225 Difference]: With dead ends: 237 [2022-03-18 12:12:25,488 INFO L226 Difference]: Without dead ends: 169 [2022-03-18 12:12:25,490 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3087 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2151, Invalid=9191, Unknown=0, NotChecked=0, Total=11342 [2022-03-18 12:12:25,490 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:25,490 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 98 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:12:25,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-03-18 12:12:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-03-18 12:12:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 125 states have (on average 1.016) internal successors, (127), 126 states have internal predecessors, (127), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-03-18 12:12:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2022-03-18 12:12:25,500 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 165 [2022-03-18 12:12:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:25,501 INFO L478 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2022-03-18 12:12:25,501 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.7424242424242424) internal successors, (115), 65 states have internal predecessors, (115), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-03-18 12:12:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2022-03-18 12:12:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-03-18 12:12:25,502 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:25,503 INFO L500 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:25,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:25,720 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-18 12:12:25,720 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:25,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:25,720 INFO L85 PathProgramCache]: Analyzing trace with hash 525309964, now seen corresponding path program 38 times [2022-03-18 12:12:25,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:25,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499343111] [2022-03-18 12:12:25,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:25,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 12:12:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 12:12:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 12:12:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 12:12:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:12:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:12:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:12:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:12:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:12:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:12:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:12:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:12:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:12:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:12:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:12:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:12:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:12:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:12:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:12:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-03-18 12:12:25,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:25,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499343111] [2022-03-18 12:12:25,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499343111] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:25,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316869941] [2022-03-18 12:12:25,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:12:25,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:25,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:25,995 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:26,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-18 12:12:26,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:12:26,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:26,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-18 12:12:26,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-03-18 12:12:26,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-03-18 12:12:26,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316869941] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:26,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:26,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 29 [2022-03-18 12:12:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602535584] [2022-03-18 12:12:26,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:26,480 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-18 12:12:26,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-18 12:12:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=544, Unknown=0, NotChecked=0, Total=812 [2022-03-18 12:12:26,480 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 21 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-03-18 12:12:26,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:26,783 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2022-03-18 12:12:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-18 12:12:26,784 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 21 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 166 [2022-03-18 12:12:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:26,784 INFO L225 Difference]: With dead ends: 182 [2022-03-18 12:12:26,784 INFO L226 Difference]: Without dead ends: 180 [2022-03-18 12:12:26,785 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=796, Invalid=2066, Unknown=0, NotChecked=0, Total=2862 [2022-03-18 12:12:26,785 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 65 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:26,787 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 50 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:26,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-03-18 12:12:26,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2022-03-18 12:12:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-03-18 12:12:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2022-03-18 12:12:26,796 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 166 [2022-03-18 12:12:26,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:26,796 INFO L478 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2022-03-18 12:12:26,796 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 21 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-03-18 12:12:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2022-03-18 12:12:26,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-03-18 12:12:26,797 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:26,797 INFO L500 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:26,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:27,015 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-18 12:12:27,015 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:27,015 INFO L85 PathProgramCache]: Analyzing trace with hash 927864550, now seen corresponding path program 39 times [2022-03-18 12:12:27,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:27,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903408996] [2022-03-18 12:12:27,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:27,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-18 12:12:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 12:12:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 12:12:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 12:12:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:12:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:12:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:12:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:12:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:12:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:12:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:12:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:12:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:12:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:12:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:12:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:12:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:12:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:12:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:12:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:12:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 592 proven. 268 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-03-18 12:12:27,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:27,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903408996] [2022-03-18 12:12:27,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903408996] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:27,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307833937] [2022-03-18 12:12:27,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:12:27,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:27,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:27,625 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:27,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-18 12:12:27,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-03-18 12:12:27,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:27,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-18 12:12:27,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-03-18 12:12:28,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-03-18 12:12:28,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307833937] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:28,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:28,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 69 [2022-03-18 12:12:28,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004842467] [2022-03-18 12:12:28,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:28,698 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-18 12:12:28,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:28,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-18 12:12:28,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1041, Invalid=3651, Unknown=0, NotChecked=0, Total=4692 [2022-03-18 12:12:28,699 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 69 states, 69 states have (on average 1.7391304347826086) internal successors, (120), 68 states have internal predecessors, (120), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-03-18 12:12:29,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:29,611 INFO L93 Difference]: Finished difference Result 248 states and 270 transitions. [2022-03-18 12:12:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-18 12:12:29,611 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.7391304347826086) internal successors, (120), 68 states have internal predecessors, (120), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 173 [2022-03-18 12:12:29,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:29,612 INFO L225 Difference]: With dead ends: 248 [2022-03-18 12:12:29,612 INFO L226 Difference]: Without dead ends: 177 [2022-03-18 12:12:29,614 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3389 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2352, Invalid=10080, Unknown=0, NotChecked=0, Total=12432 [2022-03-18 12:12:29,615 INFO L912 BasicCegarLoop]: 32 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:29,615 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 69 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:12:29,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-03-18 12:12:29,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-03-18 12:12:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 131 states have (on average 1.015267175572519) internal successors, (133), 132 states have internal predecessors, (133), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-03-18 12:12:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2022-03-18 12:12:29,631 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 173 [2022-03-18 12:12:29,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:29,632 INFO L478 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2022-03-18 12:12:29,632 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.7391304347826086) internal successors, (120), 68 states have internal predecessors, (120), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-03-18 12:12:29,632 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2022-03-18 12:12:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-03-18 12:12:29,633 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:29,633 INFO L500 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:29,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:29,855 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-03-18 12:12:29,856 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:29,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:29,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2135723090, now seen corresponding path program 40 times [2022-03-18 12:12:29,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:29,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843998725] [2022-03-18 12:12:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:29,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 12:12:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 12:12:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 12:12:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 12:12:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:12:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:12:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:12:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:12:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:12:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:12:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:12:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:12:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:12:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:12:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:12:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:12:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:12:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:12:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:12:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:12:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:30,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-03-18 12:12:30,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:30,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843998725] [2022-03-18 12:12:30,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843998725] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:30,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056000004] [2022-03-18 12:12:30,127 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:12:30,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:30,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:30,140 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:30,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-18 12:12:30,218 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:12:30,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:30,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-18 12:12:30,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-03-18 12:12:30,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-03-18 12:12:30,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056000004] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:30,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:30,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 30 [2022-03-18 12:12:30,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396883828] [2022-03-18 12:12:30,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:30,575 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-18 12:12:30,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:30,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-18 12:12:30,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=579, Unknown=0, NotChecked=0, Total=870 [2022-03-18 12:12:30,576 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand has 30 states, 30 states have (on average 2.6) internal successors, (78), 27 states have internal predecessors, (78), 22 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-03-18 12:12:30,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:30,909 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2022-03-18 12:12:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-18 12:12:30,910 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 27 states have internal predecessors, (78), 22 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 174 [2022-03-18 12:12:30,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:30,911 INFO L225 Difference]: With dead ends: 190 [2022-03-18 12:12:30,911 INFO L226 Difference]: Without dead ends: 188 [2022-03-18 12:12:30,911 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 406 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2022-03-18 12:12:30,913 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 74 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:30,913 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 40 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:30,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-03-18 12:12:30,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2022-03-18 12:12:30,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-03-18 12:12:30,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2022-03-18 12:12:30,927 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 174 [2022-03-18 12:12:30,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:30,927 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2022-03-18 12:12:30,927 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 27 states have internal predecessors, (78), 22 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-03-18 12:12:30,927 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2022-03-18 12:12:30,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-18 12:12:30,928 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:30,928 INFO L500 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:30,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-03-18 12:12:31,143 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:31,143 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:31,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:31,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1852588292, now seen corresponding path program 41 times [2022-03-18 12:12:31,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:31,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640765123] [2022-03-18 12:12:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:31,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 12:12:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 12:12:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 12:12:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 12:12:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:12:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:12:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:12:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:12:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:12:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:12:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:12:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:12:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:12:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:12:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:12:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:12:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:12:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:12:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:12:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:12:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:12:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 653 proven. 292 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-03-18 12:12:31,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:31,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640765123] [2022-03-18 12:12:31,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640765123] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:31,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765926116] [2022-03-18 12:12:31,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:12:31,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:31,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:31,880 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:31,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-18 12:12:31,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-03-18 12:12:31,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:31,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-18 12:12:31,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-03-18 12:12:32,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-03-18 12:12:32,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765926116] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:32,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:32,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 72 [2022-03-18 12:12:32,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673328531] [2022-03-18 12:12:32,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:32,933 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-03-18 12:12:32,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:32,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-03-18 12:12:32,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1134, Invalid=3978, Unknown=0, NotChecked=0, Total=5112 [2022-03-18 12:12:32,934 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 72 states, 72 states have (on average 1.7361111111111112) internal successors, (125), 71 states have internal predecessors, (125), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 12:12:33,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:33,832 INFO L93 Difference]: Finished difference Result 259 states and 282 transitions. [2022-03-18 12:12:33,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-18 12:12:33,832 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.7361111111111112) internal successors, (125), 71 states have internal predecessors, (125), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 181 [2022-03-18 12:12:33,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:33,835 INFO L225 Difference]: With dead ends: 259 [2022-03-18 12:12:33,836 INFO L226 Difference]: Without dead ends: 185 [2022-03-18 12:12:33,837 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 381 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3705 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2562, Invalid=11010, Unknown=0, NotChecked=0, Total=13572 [2022-03-18 12:12:33,841 INFO L912 BasicCegarLoop]: 33 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:33,841 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 95 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:12:33,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-03-18 12:12:33,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-03-18 12:12:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 138 states have internal predecessors, (139), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-03-18 12:12:33,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2022-03-18 12:12:33,853 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 181 [2022-03-18 12:12:33,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:33,854 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2022-03-18 12:12:33,854 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.7361111111111112) internal successors, (125), 71 states have internal predecessors, (125), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 12:12:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2022-03-18 12:12:33,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-03-18 12:12:33,855 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:33,855 INFO L500 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:33,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:34,072 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:34,072 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash -265529908, now seen corresponding path program 42 times [2022-03-18 12:12:34,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:34,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581782416] [2022-03-18 12:12:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:34,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 12:12:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-18 12:12:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 12:12:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 12:12:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:12:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:12:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:12:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:12:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:12:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:12:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:12:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:12:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:12:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:12:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:12:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:12:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:12:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:12:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:12:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:12:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:12:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-03-18 12:12:34,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:34,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581782416] [2022-03-18 12:12:34,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581782416] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:34,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665052523] [2022-03-18 12:12:34,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:12:34,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:34,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:34,349 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:34,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-18 12:12:34,426 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-03-18 12:12:34,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:34,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-18 12:12:34,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-03-18 12:12:34,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-03-18 12:12:34,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665052523] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:34,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:34,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 31 [2022-03-18 12:12:34,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627467167] [2022-03-18 12:12:34,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:34,821 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-18 12:12:34,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:34,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-18 12:12:34,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2022-03-18 12:12:34,821 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 23 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-03-18 12:12:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:35,172 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2022-03-18 12:12:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-18 12:12:35,172 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 23 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 182 [2022-03-18 12:12:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:35,173 INFO L225 Difference]: With dead ends: 198 [2022-03-18 12:12:35,173 INFO L226 Difference]: Without dead ends: 196 [2022-03-18 12:12:35,173 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 425 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=937, Invalid=2369, Unknown=0, NotChecked=0, Total=3306 [2022-03-18 12:12:35,174 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 76 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:35,174 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 35 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-03-18 12:12:35,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 192. [2022-03-18 12:12:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-18 12:12:35,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2022-03-18 12:12:35,185 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 182 [2022-03-18 12:12:35,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:35,185 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2022-03-18 12:12:35,185 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 23 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-03-18 12:12:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2022-03-18 12:12:35,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-03-18 12:12:35,186 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:35,186 INFO L500 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:35,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:35,403 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-03-18 12:12:35,403 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:35,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:35,403 INFO L85 PathProgramCache]: Analyzing trace with hash 502554918, now seen corresponding path program 43 times [2022-03-18 12:12:35,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:35,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662421087] [2022-03-18 12:12:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:35,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-18 12:12:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-18 12:12:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 12:12:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 12:12:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:12:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:12:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:12:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:12:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:12:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:12:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:12:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:12:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:12:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:12:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:12:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:12:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:12:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:12:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:12:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:12:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:12:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:12:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 717 proven. 317 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-03-18 12:12:36,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:36,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662421087] [2022-03-18 12:12:36,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662421087] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:36,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101183350] [2022-03-18 12:12:36,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:12:36,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:36,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:36,112 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:36,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-18 12:12:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:36,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-18 12:12:36,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-03-18 12:12:37,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-03-18 12:12:37,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101183350] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:37,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:37,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 75 [2022-03-18 12:12:37,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326309565] [2022-03-18 12:12:37,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:37,571 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-03-18 12:12:37,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:37,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-03-18 12:12:37,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1231, Invalid=4319, Unknown=0, NotChecked=0, Total=5550 [2022-03-18 12:12:37,572 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 75 states, 75 states have (on average 1.7333333333333334) internal successors, (130), 74 states have internal predecessors, (130), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-03-18 12:12:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:38,854 INFO L93 Difference]: Finished difference Result 270 states and 294 transitions. [2022-03-18 12:12:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-18 12:12:38,855 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.7333333333333334) internal successors, (130), 74 states have internal predecessors, (130), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 189 [2022-03-18 12:12:38,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:38,856 INFO L225 Difference]: With dead ends: 270 [2022-03-18 12:12:38,856 INFO L226 Difference]: Without dead ends: 193 [2022-03-18 12:12:38,857 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4035 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2781, Invalid=11981, Unknown=0, NotChecked=0, Total=14762 [2022-03-18 12:12:38,857 INFO L912 BasicCegarLoop]: 34 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:38,858 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 101 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:12:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-03-18 12:12:38,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-03-18 12:12:38,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 143 states have (on average 1.013986013986014) internal successors, (145), 144 states have internal predecessors, (145), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-18 12:12:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2022-03-18 12:12:38,874 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 189 [2022-03-18 12:12:38,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:38,874 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2022-03-18 12:12:38,874 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.7333333333333334) internal successors, (130), 74 states have internal predecessors, (130), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-03-18 12:12:38,874 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2022-03-18 12:12:38,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-03-18 12:12:38,875 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:38,875 INFO L500 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:38,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-03-18 12:12:39,099 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-03-18 12:12:39,099 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:39,100 INFO L85 PathProgramCache]: Analyzing trace with hash 232205806, now seen corresponding path program 44 times [2022-03-18 12:12:39,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:39,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660412644] [2022-03-18 12:12:39,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:39,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 12:12:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 12:12:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 12:12:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 12:12:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:12:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:12:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:12:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:12:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:12:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:12:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:12:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:12:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:12:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:12:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:12:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:12:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:12:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:12:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:12:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:12:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:12:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:12:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:39,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-03-18 12:12:39,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:39,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660412644] [2022-03-18 12:12:39,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660412644] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:39,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138288597] [2022-03-18 12:12:39,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:12:39,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:39,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:39,506 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:39,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-18 12:12:39,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:12:39,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:39,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-18 12:12:39,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-03-18 12:12:39,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-03-18 12:12:40,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138288597] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:40,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:40,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 32 [2022-03-18 12:12:40,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832993973] [2022-03-18 12:12:40,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:40,181 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-18 12:12:40,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:40,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-18 12:12:40,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=652, Unknown=0, NotChecked=0, Total=992 [2022-03-18 12:12:40,181 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand has 32 states, 32 states have (on average 2.625) internal successors, (84), 29 states have internal predecessors, (84), 24 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-03-18 12:12:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:40,747 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2022-03-18 12:12:40,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-18 12:12:40,748 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 29 states have internal predecessors, (84), 24 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 190 [2022-03-18 12:12:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:40,749 INFO L225 Difference]: With dead ends: 206 [2022-03-18 12:12:40,749 INFO L226 Difference]: Without dead ends: 204 [2022-03-18 12:12:40,749 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 444 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1012, Invalid=2528, Unknown=0, NotChecked=0, Total=3540 [2022-03-18 12:12:40,749 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 80 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:40,749 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 45 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:12:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-03-18 12:12:40,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2022-03-18 12:12:40,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 149 states have internal predecessors, (150), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-03-18 12:12:40,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2022-03-18 12:12:40,765 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 190 [2022-03-18 12:12:40,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:40,765 INFO L478 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2022-03-18 12:12:40,766 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 29 states have internal predecessors, (84), 24 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-03-18 12:12:40,766 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2022-03-18 12:12:40,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-03-18 12:12:40,766 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:40,766 INFO L500 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:40,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:40,986 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-18 12:12:40,987 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:40,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:40,987 INFO L85 PathProgramCache]: Analyzing trace with hash -154239292, now seen corresponding path program 45 times [2022-03-18 12:12:40,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:40,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137358608] [2022-03-18 12:12:40,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:40,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-18 12:12:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 12:12:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 12:12:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 12:12:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:12:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:12:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:12:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:12:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:12:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:12:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:12:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:12:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:12:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:12:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:12:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:12:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:12:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:12:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:12:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:12:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:12:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:12:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:12:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 784 proven. 343 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-03-18 12:12:41,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:41,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137358608] [2022-03-18 12:12:41,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137358608] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:41,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972485430] [2022-03-18 12:12:41,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:12:41,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:41,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:41,763 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:41,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-18 12:12:41,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-03-18 12:12:41,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:41,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 50 conjunts are in the unsatisfiable core [2022-03-18 12:12:41,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-03-18 12:12:42,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-03-18 12:12:43,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972485430] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:43,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:43,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 78 [2022-03-18 12:12:43,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388040085] [2022-03-18 12:12:43,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:43,221 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-03-18 12:12:43,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:43,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-03-18 12:12:43,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1332, Invalid=4674, Unknown=0, NotChecked=0, Total=6006 [2022-03-18 12:12:43,222 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 78 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 77 states have internal predecessors, (135), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-03-18 12:12:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:43,945 INFO L93 Difference]: Finished difference Result 281 states and 306 transitions. [2022-03-18 12:12:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-18 12:12:43,946 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 77 states have internal predecessors, (135), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 197 [2022-03-18 12:12:43,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:43,946 INFO L225 Difference]: With dead ends: 281 [2022-03-18 12:12:43,947 INFO L226 Difference]: Without dead ends: 201 [2022-03-18 12:12:43,947 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 415 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4379 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3009, Invalid=12993, Unknown=0, NotChecked=0, Total=16002 [2022-03-18 12:12:43,948 INFO L912 BasicCegarLoop]: 35 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:43,948 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 82 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-03-18 12:12:43,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-03-18 12:12:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 150 states have internal predecessors, (151), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-03-18 12:12:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2022-03-18 12:12:43,988 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 197 [2022-03-18 12:12:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:43,988 INFO L478 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2022-03-18 12:12:43,988 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 77 states have internal predecessors, (135), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-03-18 12:12:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2022-03-18 12:12:43,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-03-18 12:12:43,989 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:43,989 INFO L500 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:44,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-18 12:12:44,209 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:44,209 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:44,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:44,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1117520780, now seen corresponding path program 46 times [2022-03-18 12:12:44,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:44,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853950932] [2022-03-18 12:12:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:44,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 12:12:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 12:12:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:12:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 12:12:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:12:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:12:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:12:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:12:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:12:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:12:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:12:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:12:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:12:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:12:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:12:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:12:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:12:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:12:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:12:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:12:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:12:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:12:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:12:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-03-18 12:12:44,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:44,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853950932] [2022-03-18 12:12:44,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853950932] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:44,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220919179] [2022-03-18 12:12:44,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:12:44,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:44,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:44,542 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:44,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-18 12:12:44,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:12:44,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:44,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-18 12:12:44,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:44,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-03-18 12:12:44,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-03-18 12:12:45,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220919179] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:45,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:45,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 33 [2022-03-18 12:12:45,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141198824] [2022-03-18 12:12:45,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:45,211 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-18 12:12:45,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:45,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-18 12:12:45,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2022-03-18 12:12:45,212 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 30 states have internal predecessors, (87), 25 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-18 12:12:45,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:45,678 INFO L93 Difference]: Finished difference Result 214 states and 216 transitions. [2022-03-18 12:12:45,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-18 12:12:45,679 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 30 states have internal predecessors, (87), 25 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 198 [2022-03-18 12:12:45,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:45,679 INFO L225 Difference]: With dead ends: 214 [2022-03-18 12:12:45,679 INFO L226 Difference]: Without dead ends: 212 [2022-03-18 12:12:45,680 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 463 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1090, Invalid=2692, Unknown=0, NotChecked=0, Total=3782 [2022-03-18 12:12:45,680 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 77 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:45,680 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 75 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-03-18 12:12:45,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 208. [2022-03-18 12:12:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 155 states have internal predecessors, (156), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-03-18 12:12:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2022-03-18 12:12:45,692 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 198 [2022-03-18 12:12:45,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:45,692 INFO L478 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2022-03-18 12:12:45,692 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 30 states have internal predecessors, (87), 25 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-18 12:12:45,692 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2022-03-18 12:12:45,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-03-18 12:12:45,693 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:45,693 INFO L500 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:45,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-18 12:12:45,910 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-03-18 12:12:45,911 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:45,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:45,911 INFO L85 PathProgramCache]: Analyzing trace with hash 349813606, now seen corresponding path program 47 times [2022-03-18 12:12:45,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:45,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274250302] [2022-03-18 12:12:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:45,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 12:12:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 12:12:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:12:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 12:12:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:12:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:12:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:12:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:12:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:12:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:12:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:12:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:12:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:12:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:12:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:12:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:12:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:12:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:12:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:12:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:12:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:12:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:12:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:12:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:12:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 854 proven. 370 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-03-18 12:12:46,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:46,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274250302] [2022-03-18 12:12:46,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274250302] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:46,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485040952] [2022-03-18 12:12:46,471 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:12:46,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:46,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:46,479 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:46,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-18 12:12:46,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2022-03-18 12:12:46,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:46,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-18 12:12:46,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-03-18 12:12:47,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-03-18 12:12:48,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485040952] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:48,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:48,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 81 [2022-03-18 12:12:48,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137980400] [2022-03-18 12:12:48,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:48,127 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-03-18 12:12:48,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:48,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-03-18 12:12:48,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1437, Invalid=5043, Unknown=0, NotChecked=0, Total=6480 [2022-03-18 12:12:48,128 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 81 states, 81 states have (on average 1.728395061728395) internal successors, (140), 80 states have internal predecessors, (140), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-03-18 12:12:49,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:49,349 INFO L93 Difference]: Finished difference Result 292 states and 318 transitions. [2022-03-18 12:12:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-18 12:12:49,350 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.728395061728395) internal successors, (140), 80 states have internal predecessors, (140), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 205 [2022-03-18 12:12:49,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:49,350 INFO L225 Difference]: With dead ends: 292 [2022-03-18 12:12:49,350 INFO L226 Difference]: Without dead ends: 209 [2022-03-18 12:12:49,352 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 432 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4737 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3246, Invalid=14046, Unknown=0, NotChecked=0, Total=17292 [2022-03-18 12:12:49,352 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:49,352 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 93 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:12:49,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-03-18 12:12:49,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-03-18 12:12:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 156 states have internal predecessors, (157), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-03-18 12:12:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2022-03-18 12:12:49,396 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 205 [2022-03-18 12:12:49,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:49,396 INFO L478 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2022-03-18 12:12:49,396 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.728395061728395) internal successors, (140), 80 states have internal predecessors, (140), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-03-18 12:12:49,396 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2022-03-18 12:12:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-03-18 12:12:49,397 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:49,397 INFO L500 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:49,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:49,597 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-03-18 12:12:49,598 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:49,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:49,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1650063406, now seen corresponding path program 48 times [2022-03-18 12:12:49,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:49,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114817124] [2022-03-18 12:12:49,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:49,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 12:12:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 12:12:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 12:12:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:12:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:12:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:12:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:12:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:12:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:12:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:12:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:12:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:12:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:12:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:12:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:12:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:12:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:12:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:12:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:12:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:12:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:12:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:12:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:12:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:12:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-03-18 12:12:49,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:49,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114817124] [2022-03-18 12:12:49,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114817124] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:49,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66685407] [2022-03-18 12:12:49,849 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:12:49,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:49,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:49,851 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:49,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-18 12:12:49,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2022-03-18 12:12:49,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:49,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-18 12:12:49,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-03-18 12:12:50,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-03-18 12:12:50,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66685407] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:50,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:50,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 34 [2022-03-18 12:12:50,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151333268] [2022-03-18 12:12:50,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:50,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-18 12:12:50,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:50,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-18 12:12:50,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=729, Unknown=0, NotChecked=0, Total=1122 [2022-03-18 12:12:50,604 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 31 states have internal predecessors, (90), 26 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-03-18 12:12:51,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:51,237 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2022-03-18 12:12:51,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-18 12:12:51,237 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 31 states have internal predecessors, (90), 26 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 206 [2022-03-18 12:12:51,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:51,239 INFO L225 Difference]: With dead ends: 222 [2022-03-18 12:12:51,239 INFO L226 Difference]: Without dead ends: 220 [2022-03-18 12:12:51,239 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 482 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1171, Invalid=2861, Unknown=0, NotChecked=0, Total=4032 [2022-03-18 12:12:51,240 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 77 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:51,240 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 55 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:12:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-03-18 12:12:51,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2022-03-18 12:12:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-03-18 12:12:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2022-03-18 12:12:51,260 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 206 [2022-03-18 12:12:51,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:51,260 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2022-03-18 12:12:51,260 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 31 states have internal predecessors, (90), 26 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-03-18 12:12:51,260 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2022-03-18 12:12:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-03-18 12:12:51,261 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:51,261 INFO L500 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:51,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:51,480 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-18 12:12:51,481 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:51,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:51,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1849709436, now seen corresponding path program 49 times [2022-03-18 12:12:51,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:51,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051706769] [2022-03-18 12:12:51,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:51,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 12:12:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 12:12:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 12:12:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:12:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:12:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:12:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:12:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:12:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:12:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:12:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:12:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:12:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:12:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:12:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:12:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:12:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:12:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:12:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:12:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:12:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:12:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:12:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:12:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:12:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:12:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 927 proven. 398 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-03-18 12:12:52,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:52,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051706769] [2022-03-18 12:12:52,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051706769] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:52,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104874285] [2022-03-18 12:12:52,497 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:12:52,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:52,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:52,512 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:52,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-18 12:12:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:52,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-18 12:12:52,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-03-18 12:12:54,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-03-18 12:12:54,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104874285] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:54,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:54,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 84 [2022-03-18 12:12:54,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243763108] [2022-03-18 12:12:54,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:54,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-03-18 12:12:54,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:54,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-03-18 12:12:54,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1546, Invalid=5426, Unknown=0, NotChecked=0, Total=6972 [2022-03-18 12:12:54,546 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 84 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 83 states have internal predecessors, (145), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-18 12:12:55,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:55,732 INFO L93 Difference]: Finished difference Result 303 states and 330 transitions. [2022-03-18 12:12:55,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-18 12:12:55,733 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 83 states have internal predecessors, (145), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 213 [2022-03-18 12:12:55,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:55,734 INFO L225 Difference]: With dead ends: 303 [2022-03-18 12:12:55,734 INFO L226 Difference]: Without dead ends: 217 [2022-03-18 12:12:55,736 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 449 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5109 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3492, Invalid=15140, Unknown=0, NotChecked=0, Total=18632 [2022-03-18 12:12:55,737 INFO L912 BasicCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:55,737 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 79 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:12:55,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-03-18 12:12:55,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-03-18 12:12:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 161 states have (on average 1.0124223602484472) internal successors, (163), 162 states have internal predecessors, (163), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-03-18 12:12:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2022-03-18 12:12:55,755 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 213 [2022-03-18 12:12:55,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:55,755 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2022-03-18 12:12:55,756 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 83 states have internal predecessors, (145), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-18 12:12:55,756 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2022-03-18 12:12:55,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-03-18 12:12:55,757 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:55,757 INFO L500 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:55,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:55,975 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-03-18 12:12:55,975 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:55,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:55,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1052418380, now seen corresponding path program 50 times [2022-03-18 12:12:55,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:55,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523620550] [2022-03-18 12:12:55,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:55,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 12:12:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 12:12:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 12:12:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 12:12:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:12:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:12:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:12:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:12:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:12:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:12:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:12:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:12:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:12:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:12:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:12:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:12:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:12:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:12:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:12:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:12:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:12:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:12:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:12:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:12:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:12:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-03-18 12:12:56,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:56,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523620550] [2022-03-18 12:12:56,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523620550] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:56,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217642840] [2022-03-18 12:12:56,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:12:56,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:56,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:56,427 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:56,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-18 12:12:56,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:12:56,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:56,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-18 12:12:56,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-03-18 12:12:56,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:12:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-03-18 12:12:56,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217642840] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:12:56,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:12:56,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 35 [2022-03-18 12:12:56,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226889356] [2022-03-18 12:12:56,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:12:56,974 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-18 12:12:56,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:12:56,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-18 12:12:56,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=769, Unknown=0, NotChecked=0, Total=1190 [2022-03-18 12:12:56,975 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 32 states have internal predecessors, (93), 27 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-03-18 12:12:57,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:12:57,385 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2022-03-18 12:12:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-18 12:12:57,386 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 32 states have internal predecessors, (93), 27 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 214 [2022-03-18 12:12:57,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:12:57,392 INFO L225 Difference]: With dead ends: 230 [2022-03-18 12:12:57,392 INFO L226 Difference]: Without dead ends: 228 [2022-03-18 12:12:57,393 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 501 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1255, Invalid=3035, Unknown=0, NotChecked=0, Total=4290 [2022-03-18 12:12:57,394 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 79 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:12:57,394 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 45 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:12:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-03-18 12:12:57,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2022-03-18 12:12:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 167 states have internal predecessors, (168), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-03-18 12:12:57,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2022-03-18 12:12:57,408 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 214 [2022-03-18 12:12:57,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:12:57,409 INFO L478 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2022-03-18 12:12:57,409 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 32 states have internal predecessors, (93), 27 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-03-18 12:12:57,409 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2022-03-18 12:12:57,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-03-18 12:12:57,410 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:12:57,410 INFO L500 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:12:57,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-18 12:12:57,623 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:57,623 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:12:57,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:12:57,624 INFO L85 PathProgramCache]: Analyzing trace with hash -597547610, now seen corresponding path program 51 times [2022-03-18 12:12:57,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:12:57,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336767296] [2022-03-18 12:12:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:12:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:12:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:12:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-18 12:12:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 12:12:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 12:12:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 12:12:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:12:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:12:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:12:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:12:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:12:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:12:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:12:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:12:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:12:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:12:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:12:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:12:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:12:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:12:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:12:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:12:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:12:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:12:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:12:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:12:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:12:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:12:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:12:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1003 proven. 427 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-03-18 12:12:58,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:12:58,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336767296] [2022-03-18 12:12:58,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336767296] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:12:58,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526395902] [2022-03-18 12:12:58,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:12:58,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:12:58,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:12:58,522 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:12:58,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-18 12:12:58,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2022-03-18 12:12:58,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:12:58,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-18 12:12:58,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:12:59,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-03-18 12:12:59,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-03-18 12:13:00,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526395902] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:00,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:00,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 87 [2022-03-18 12:13:00,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43158764] [2022-03-18 12:13:00,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:00,275 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-18 12:13:00,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:00,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-18 12:13:00,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1659, Invalid=5823, Unknown=0, NotChecked=0, Total=7482 [2022-03-18 12:13:00,276 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 87 states, 87 states have (on average 1.7241379310344827) internal successors, (150), 86 states have internal predecessors, (150), 55 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-03-18 12:13:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:01,571 INFO L93 Difference]: Finished difference Result 314 states and 342 transitions. [2022-03-18 12:13:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-18 12:13:01,572 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.7241379310344827) internal successors, (150), 86 states have internal predecessors, (150), 55 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 221 [2022-03-18 12:13:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:01,573 INFO L225 Difference]: With dead ends: 314 [2022-03-18 12:13:01,573 INFO L226 Difference]: Without dead ends: 225 [2022-03-18 12:13:01,574 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 466 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5495 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3747, Invalid=16275, Unknown=0, NotChecked=0, Total=20022 [2022-03-18 12:13:01,574 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:01,574 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 85 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:13:01,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-03-18 12:13:01,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-03-18 12:13:01,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 168 states have internal predecessors, (169), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-03-18 12:13:01,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2022-03-18 12:13:01,588 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 221 [2022-03-18 12:13:01,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:01,588 INFO L478 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2022-03-18 12:13:01,588 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.7241379310344827) internal successors, (150), 86 states have internal predecessors, (150), 55 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-03-18 12:13:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2022-03-18 12:13:01,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-03-18 12:13:01,589 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:01,589 INFO L500 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:01,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:01,806 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-03-18 12:13:01,806 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:01,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:01,807 INFO L85 PathProgramCache]: Analyzing trace with hash -23080338, now seen corresponding path program 52 times [2022-03-18 12:13:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:01,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140542011] [2022-03-18 12:13:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:01,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 12:13:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 12:13:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 12:13:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:13:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:13:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:13:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:13:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:13:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:13:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:13:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:13:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:13:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:13:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:13:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:13:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:13:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:13:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:13:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:13:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:13:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:13:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:13:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:13:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:13:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:13:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:13:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:02,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-03-18 12:13:02,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:02,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140542011] [2022-03-18 12:13:02,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140542011] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:02,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582343782] [2022-03-18 12:13:02,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:13:02,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:02,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:02,209 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:02,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-18 12:13:02,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:13:02,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:02,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-18 12:13:02,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-03-18 12:13:02,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-03-18 12:13:02,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582343782] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:02,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:02,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 36 [2022-03-18 12:13:02,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775690853] [2022-03-18 12:13:02,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:02,992 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-18 12:13:02,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:02,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-18 12:13:02,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=810, Unknown=0, NotChecked=0, Total=1260 [2022-03-18 12:13:02,992 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand has 36 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 33 states have internal predecessors, (96), 28 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-03-18 12:13:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:03,483 INFO L93 Difference]: Finished difference Result 238 states and 240 transitions. [2022-03-18 12:13:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-18 12:13:03,484 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 33 states have internal predecessors, (96), 28 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 222 [2022-03-18 12:13:03,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:03,485 INFO L225 Difference]: With dead ends: 238 [2022-03-18 12:13:03,485 INFO L226 Difference]: Without dead ends: 236 [2022-03-18 12:13:03,485 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 520 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1342, Invalid=3214, Unknown=0, NotChecked=0, Total=4556 [2022-03-18 12:13:03,485 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 87 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:03,486 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 45 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:13:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-03-18 12:13:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2022-03-18 12:13:03,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 states have internal predecessors, (174), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-18 12:13:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2022-03-18 12:13:03,500 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 222 [2022-03-18 12:13:03,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:03,500 INFO L478 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2022-03-18 12:13:03,500 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 33 states have internal predecessors, (96), 28 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-03-18 12:13:03,500 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2022-03-18 12:13:03,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-03-18 12:13:03,501 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:03,501 INFO L500 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:03,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:03,718 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:03,718 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:03,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:03,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1180420676, now seen corresponding path program 53 times [2022-03-18 12:13:03,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:03,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144546137] [2022-03-18 12:13:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:03,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 12:13:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 12:13:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 12:13:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:13:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:13:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:13:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:13:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:13:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:13:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:13:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:13:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:13:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:13:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:13:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:13:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:13:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:13:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:13:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:13:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:13:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:13:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:13:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:13:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:13:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:13:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:13:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:13:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1082 proven. 457 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-03-18 12:13:04,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:04,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144546137] [2022-03-18 12:13:04,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144546137] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:04,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750204410] [2022-03-18 12:13:04,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:13:04,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:04,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:04,577 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:04,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-18 12:13:04,671 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2022-03-18 12:13:04,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:04,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-18 12:13:04,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-03-18 12:13:06,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-03-18 12:13:06,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750204410] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:06,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:06,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 90 [2022-03-18 12:13:06,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433572513] [2022-03-18 12:13:06,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:06,433 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-03-18 12:13:06,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:06,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-03-18 12:13:06,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1776, Invalid=6234, Unknown=0, NotChecked=0, Total=8010 [2022-03-18 12:13:06,434 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 90 states, 90 states have (on average 1.7222222222222223) internal successors, (155), 89 states have internal predecessors, (155), 57 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-18 12:13:07,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:07,938 INFO L93 Difference]: Finished difference Result 325 states and 354 transitions. [2022-03-18 12:13:07,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-18 12:13:07,939 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.7222222222222223) internal successors, (155), 89 states have internal predecessors, (155), 57 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 229 [2022-03-18 12:13:07,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:07,940 INFO L225 Difference]: With dead ends: 325 [2022-03-18 12:13:07,940 INFO L226 Difference]: Without dead ends: 233 [2022-03-18 12:13:07,941 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 483 SyntacticMatches, 1 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5895 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4011, Invalid=17451, Unknown=0, NotChecked=0, Total=21462 [2022-03-18 12:13:07,941 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:07,941 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 96 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:13:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-03-18 12:13:07,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2022-03-18 12:13:07,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 173 states have (on average 1.0115606936416186) internal successors, (175), 174 states have internal predecessors, (175), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-18 12:13:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2022-03-18 12:13:07,957 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 229 [2022-03-18 12:13:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:07,958 INFO L478 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2022-03-18 12:13:07,958 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.7222222222222223) internal successors, (155), 89 states have internal predecessors, (155), 57 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-18 12:13:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2022-03-18 12:13:07,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-03-18 12:13:07,959 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:07,959 INFO L500 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:07,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-03-18 12:13:08,177 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:08,177 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:08,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:08,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1415303412, now seen corresponding path program 54 times [2022-03-18 12:13:08,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:08,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567429152] [2022-03-18 12:13:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:08,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 12:13:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 12:13:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 12:13:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:13:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:13:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:13:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:13:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:13:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:13:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:13:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:13:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:13:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:13:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:13:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:13:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:13:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:13:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:13:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:13:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:13:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:13:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:13:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:13:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:13:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:13:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:13:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:13:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-03-18 12:13:08,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:08,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567429152] [2022-03-18 12:13:08,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567429152] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:08,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483697489] [2022-03-18 12:13:08,700 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:13:08,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:08,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:08,701 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:08,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-18 12:13:08,832 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2022-03-18 12:13:08,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:08,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-18 12:13:08,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-03-18 12:13:09,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-03-18 12:13:09,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483697489] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:09,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:09,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 37 [2022-03-18 12:13:09,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38394182] [2022-03-18 12:13:09,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:09,722 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-18 12:13:09,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:09,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-18 12:13:09,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2022-03-18 12:13:09,722 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 34 states have internal predecessors, (99), 29 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-03-18 12:13:10,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:10,474 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2022-03-18 12:13:10,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-18 12:13:10,474 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 34 states have internal predecessors, (99), 29 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 230 [2022-03-18 12:13:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:10,476 INFO L225 Difference]: With dead ends: 246 [2022-03-18 12:13:10,476 INFO L226 Difference]: Without dead ends: 244 [2022-03-18 12:13:10,477 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 539 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1432, Invalid=3398, Unknown=0, NotChecked=0, Total=4830 [2022-03-18 12:13:10,477 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 90 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:10,477 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 55 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:13:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-03-18 12:13:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2022-03-18 12:13:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 179 states have internal predecessors, (180), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-03-18 12:13:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2022-03-18 12:13:10,498 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 230 [2022-03-18 12:13:10,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:10,499 INFO L478 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2022-03-18 12:13:10,499 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 34 states have internal predecessors, (99), 29 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-03-18 12:13:10,499 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2022-03-18 12:13:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-03-18 12:13:10,500 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:10,501 INFO L500 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:10,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:10,720 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:10,720 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:10,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:10,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1242456090, now seen corresponding path program 55 times [2022-03-18 12:13:10,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:10,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535451637] [2022-03-18 12:13:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:10,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-18 12:13:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 12:13:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 12:13:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:13:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:13:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:13:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:13:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:13:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:13:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:13:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:13:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:13:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:13:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:13:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:13:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:13:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:13:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:13:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:13:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:13:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:13:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:13:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:13:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:13:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:13:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:13:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:13:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:13:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1164 proven. 488 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-03-18 12:13:11,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:11,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535451637] [2022-03-18 12:13:11,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535451637] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:11,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789362601] [2022-03-18 12:13:11,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:13:11,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:11,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:11,420 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:11,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-18 12:13:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:11,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-18 12:13:11,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-03-18 12:13:12,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-03-18 12:13:13,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789362601] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:13,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:13,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 93 [2022-03-18 12:13:13,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914478446] [2022-03-18 12:13:13,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:13,300 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-03-18 12:13:13,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:13,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-03-18 12:13:13,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1897, Invalid=6659, Unknown=0, NotChecked=0, Total=8556 [2022-03-18 12:13:13,301 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 93 states, 93 states have (on average 1.7204301075268817) internal successors, (160), 92 states have internal predecessors, (160), 59 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-03-18 12:13:14,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:14,935 INFO L93 Difference]: Finished difference Result 336 states and 366 transitions. [2022-03-18 12:13:14,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-18 12:13:14,936 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.7204301075268817) internal successors, (160), 92 states have internal predecessors, (160), 59 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 237 [2022-03-18 12:13:14,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:14,936 INFO L225 Difference]: With dead ends: 336 [2022-03-18 12:13:14,936 INFO L226 Difference]: Without dead ends: 241 [2022-03-18 12:13:14,938 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 500 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6309 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4284, Invalid=18668, Unknown=0, NotChecked=0, Total=22952 [2022-03-18 12:13:14,938 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:14,938 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 117 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 12:13:14,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-03-18 12:13:14,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-03-18 12:13:14,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 179 states have (on average 1.011173184357542) internal successors, (181), 180 states have internal predecessors, (181), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-03-18 12:13:14,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2022-03-18 12:13:14,954 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 237 [2022-03-18 12:13:14,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:14,954 INFO L478 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2022-03-18 12:13:14,954 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.7204301075268817) internal successors, (160), 92 states have internal predecessors, (160), 59 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-03-18 12:13:14,954 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2022-03-18 12:13:14,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-03-18 12:13:14,955 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:14,955 INFO L500 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:14,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-03-18 12:13:15,169 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:15,169 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:15,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:15,169 INFO L85 PathProgramCache]: Analyzing trace with hash -468927314, now seen corresponding path program 56 times [2022-03-18 12:13:15,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:15,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245675487] [2022-03-18 12:13:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:15,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-18 12:13:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 12:13:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 12:13:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:13:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:13:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:13:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:13:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:13:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:13:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:13:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:13:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:13:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:13:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:13:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:13:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:13:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:13:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:13:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:13:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:13:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:13:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:13:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:13:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:13:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:13:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:13:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:13:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:13:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-03-18 12:13:15,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:15,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245675487] [2022-03-18 12:13:15,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245675487] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:15,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267881947] [2022-03-18 12:13:15,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:13:15,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:15,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:15,624 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:15,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-18 12:13:15,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:13:15,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:15,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-18 12:13:15,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-03-18 12:13:16,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-03-18 12:13:16,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267881947] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:16,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:16,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 38 [2022-03-18 12:13:16,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591617064] [2022-03-18 12:13:16,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:16,434 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-18 12:13:16,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:16,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-18 12:13:16,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=895, Unknown=0, NotChecked=0, Total=1406 [2022-03-18 12:13:16,435 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 35 states have internal predecessors, (102), 30 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-18 12:13:17,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:17,060 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2022-03-18 12:13:17,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-18 12:13:17,061 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 35 states have internal predecessors, (102), 30 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 238 [2022-03-18 12:13:17,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:17,062 INFO L225 Difference]: With dead ends: 254 [2022-03-18 12:13:17,062 INFO L226 Difference]: Without dead ends: 252 [2022-03-18 12:13:17,063 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 558 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1525, Invalid=3587, Unknown=0, NotChecked=0, Total=5112 [2022-03-18 12:13:17,063 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 91 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:17,063 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 55 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:13:17,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-03-18 12:13:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 248. [2022-03-18 12:13:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 185 states have internal predecessors, (186), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-03-18 12:13:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2022-03-18 12:13:17,080 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 238 [2022-03-18 12:13:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:17,080 INFO L478 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2022-03-18 12:13:17,080 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 35 states have internal predecessors, (102), 30 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-18 12:13:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2022-03-18 12:13:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-03-18 12:13:17,081 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:17,081 INFO L500 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:17,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:17,296 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-03-18 12:13:17,296 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:17,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:17,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2059327492, now seen corresponding path program 57 times [2022-03-18 12:13:17,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:17,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824421095] [2022-03-18 12:13:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:17,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-03-18 12:13:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 12:13:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 12:13:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:13:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:13:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:13:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:13:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:13:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:13:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:13:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:13:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:13:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:13:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:13:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:13:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:13:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:13:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:13:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:13:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:13:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:13:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:13:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:13:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:13:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:13:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:13:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:13:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:13:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:13:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1249 proven. 520 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-03-18 12:13:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:18,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824421095] [2022-03-18 12:13:18,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824421095] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:18,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638860160] [2022-03-18 12:13:18,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:13:18,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:18,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:18,302 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:18,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-18 12:13:18,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2022-03-18 12:13:18,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:18,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 62 conjunts are in the unsatisfiable core [2022-03-18 12:13:18,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:19,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-03-18 12:13:19,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-03-18 12:13:20,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638860160] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:20,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:20,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 96 [2022-03-18 12:13:20,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661460052] [2022-03-18 12:13:20,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:20,250 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-03-18 12:13:20,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:20,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-03-18 12:13:20,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2022, Invalid=7098, Unknown=0, NotChecked=0, Total=9120 [2022-03-18 12:13:20,251 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 96 states, 96 states have (on average 1.71875) internal successors, (165), 95 states have internal predecessors, (165), 61 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-03-18 12:13:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:21,467 INFO L93 Difference]: Finished difference Result 347 states and 378 transitions. [2022-03-18 12:13:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-18 12:13:21,468 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.71875) internal successors, (165), 95 states have internal predecessors, (165), 61 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Word has length 245 [2022-03-18 12:13:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:21,469 INFO L225 Difference]: With dead ends: 347 [2022-03-18 12:13:21,469 INFO L226 Difference]: Without dead ends: 249 [2022-03-18 12:13:21,470 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 517 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6737 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4566, Invalid=19926, Unknown=0, NotChecked=0, Total=24492 [2022-03-18 12:13:21,470 INFO L912 BasicCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:21,483 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 108 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:13:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-03-18 12:13:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-03-18 12:13:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 185 states have (on average 1.0108108108108107) internal successors, (187), 186 states have internal predecessors, (187), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-03-18 12:13:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2022-03-18 12:13:21,500 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 245 [2022-03-18 12:13:21,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:21,500 INFO L478 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2022-03-18 12:13:21,500 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.71875) internal successors, (165), 95 states have internal predecessors, (165), 61 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-03-18 12:13:21,501 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2022-03-18 12:13:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-03-18 12:13:21,501 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:21,501 INFO L500 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:21,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:21,719 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-03-18 12:13:21,719 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:21,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1351308084, now seen corresponding path program 58 times [2022-03-18 12:13:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:21,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978026519] [2022-03-18 12:13:21,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:21,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 12:13:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 12:13:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 12:13:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:13:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:13:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:13:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:13:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:13:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:13:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:13:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:13:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:13:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:13:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:13:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:13:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:13:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:13:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:13:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:13:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:13:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:13:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:13:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:13:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:13:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:13:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:13:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:13:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:13:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:13:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-03-18 12:13:22,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:22,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978026519] [2022-03-18 12:13:22,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978026519] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:22,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421453418] [2022-03-18 12:13:22,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:13:22,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:22,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:22,198 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:22,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-18 12:13:22,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:13:22,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:22,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 63 conjunts are in the unsatisfiable core [2022-03-18 12:13:22,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-03-18 12:13:22,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-03-18 12:13:23,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421453418] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:23,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:23,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 39 [2022-03-18 12:13:23,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442778257] [2022-03-18 12:13:23,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:23,054 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-18 12:13:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-18 12:13:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=939, Unknown=0, NotChecked=0, Total=1482 [2022-03-18 12:13:23,054 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 36 states have internal predecessors, (105), 31 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-03-18 12:13:23,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:23,705 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2022-03-18 12:13:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-18 12:13:23,705 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 36 states have internal predecessors, (105), 31 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 246 [2022-03-18 12:13:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:23,706 INFO L225 Difference]: With dead ends: 262 [2022-03-18 12:13:23,706 INFO L226 Difference]: Without dead ends: 260 [2022-03-18 12:13:23,707 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 577 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1621, Invalid=3781, Unknown=0, NotChecked=0, Total=5402 [2022-03-18 12:13:23,707 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 91 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:23,708 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 50 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:13:23,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-03-18 12:13:23,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2022-03-18 12:13:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 states have internal predecessors, (192), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-18 12:13:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2022-03-18 12:13:23,725 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 246 [2022-03-18 12:13:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:23,726 INFO L478 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2022-03-18 12:13:23,726 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 36 states have internal predecessors, (105), 31 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-03-18 12:13:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2022-03-18 12:13:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-03-18 12:13:23,727 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:23,727 INFO L500 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:23,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:23,939 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-18 12:13:23,939 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:23,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:23,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1544803802, now seen corresponding path program 59 times [2022-03-18 12:13:23,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:23,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780070117] [2022-03-18 12:13:23,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:23,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-03-18 12:13:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 12:13:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 12:13:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:13:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:13:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:13:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:13:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:13:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:13:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:13:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:13:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:13:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:13:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:13:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:13:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:13:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:13:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:13:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:13:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:13:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:13:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:13:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:13:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:13:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:13:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:13:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:13:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:13:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:13:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:13:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:25,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1337 proven. 553 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-03-18 12:13:25,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:25,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780070117] [2022-03-18 12:13:25,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780070117] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:25,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447144674] [2022-03-18 12:13:25,061 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:13:25,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:25,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:25,062 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:25,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-18 12:13:25,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-03-18 12:13:25,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:25,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 64 conjunts are in the unsatisfiable core [2022-03-18 12:13:25,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-03-18 12:13:27,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-03-18 12:13:27,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447144674] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:27,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:27,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 99 [2022-03-18 12:13:27,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010010552] [2022-03-18 12:13:27,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:27,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-03-18 12:13:27,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:27,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-03-18 12:13:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2151, Invalid=7551, Unknown=0, NotChecked=0, Total=9702 [2022-03-18 12:13:27,620 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 99 states, 99 states have (on average 1.7171717171717171) internal successors, (170), 98 states have internal predecessors, (170), 63 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-03-18 12:13:29,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:29,125 INFO L93 Difference]: Finished difference Result 358 states and 390 transitions. [2022-03-18 12:13:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-18 12:13:29,126 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.7171717171717171) internal successors, (170), 98 states have internal predecessors, (170), 63 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 253 [2022-03-18 12:13:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:29,127 INFO L225 Difference]: With dead ends: 358 [2022-03-18 12:13:29,127 INFO L226 Difference]: Without dead ends: 257 [2022-03-18 12:13:29,130 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 534 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7179 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4857, Invalid=21225, Unknown=0, NotChecked=0, Total=26082 [2022-03-18 12:13:29,130 INFO L912 BasicCegarLoop]: 42 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:29,130 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 99 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:13:29,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-03-18 12:13:29,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2022-03-18 12:13:29,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 191 states have (on average 1.0104712041884816) internal successors, (193), 192 states have internal predecessors, (193), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-18 12:13:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2022-03-18 12:13:29,156 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 253 [2022-03-18 12:13:29,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:29,156 INFO L478 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2022-03-18 12:13:29,156 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.7171717171717171) internal successors, (170), 98 states have internal predecessors, (170), 63 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-03-18 12:13:29,157 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2022-03-18 12:13:29,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-03-18 12:13:29,158 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:29,158 INFO L500 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:29,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:29,373 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:29,374 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:29,374 INFO L85 PathProgramCache]: Analyzing trace with hash -721111314, now seen corresponding path program 60 times [2022-03-18 12:13:29,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:29,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953182364] [2022-03-18 12:13:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 12:13:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:13:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 12:13:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:13:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:13:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:13:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:13:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:13:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:13:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:13:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:13:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:13:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:13:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:13:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:13:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:13:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:13:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:13:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:13:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:13:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:13:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:13:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:13:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:13:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:13:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:13:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:13:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:13:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:13:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:13:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-03-18 12:13:29,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:29,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953182364] [2022-03-18 12:13:29,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953182364] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:29,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331071505] [2022-03-18 12:13:29,814 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:13:29,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:29,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:29,828 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:29,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-18 12:13:29,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2022-03-18 12:13:29,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:29,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-18 12:13:29,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-03-18 12:13:30,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-03-18 12:13:30,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331071505] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:30,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:30,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 40 [2022-03-18 12:13:30,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907753090] [2022-03-18 12:13:30,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:30,463 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-18 12:13:30,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:30,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-18 12:13:30,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=984, Unknown=0, NotChecked=0, Total=1560 [2022-03-18 12:13:30,464 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand has 40 states, 40 states have (on average 2.7) internal successors, (108), 37 states have internal predecessors, (108), 32 states have call successors, (35), 4 states have call predecessors, (35), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-03-18 12:13:30,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:30,960 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2022-03-18 12:13:30,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-18 12:13:30,961 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.7) internal successors, (108), 37 states have internal predecessors, (108), 32 states have call successors, (35), 4 states have call predecessors, (35), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 254 [2022-03-18 12:13:30,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:30,962 INFO L225 Difference]: With dead ends: 270 [2022-03-18 12:13:30,962 INFO L226 Difference]: Without dead ends: 268 [2022-03-18 12:13:30,963 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 596 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1720, Invalid=3980, Unknown=0, NotChecked=0, Total=5700 [2022-03-18 12:13:30,963 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 90 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:30,963 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 55 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:13:30,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-03-18 12:13:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2022-03-18 12:13:30,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 196 states have (on average 1.010204081632653) internal successors, (198), 197 states have internal predecessors, (198), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-03-18 12:13:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2022-03-18 12:13:30,988 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 254 [2022-03-18 12:13:30,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:30,988 INFO L478 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2022-03-18 12:13:30,988 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.7) internal successors, (108), 37 states have internal predecessors, (108), 32 states have call successors, (35), 4 states have call predecessors, (35), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-03-18 12:13:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2022-03-18 12:13:30,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-03-18 12:13:30,989 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:30,989 INFO L500 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:31,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:31,213 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:31,214 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:31,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1274751548, now seen corresponding path program 61 times [2022-03-18 12:13:31,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:31,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446546970] [2022-03-18 12:13:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:31,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-03-18 12:13:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:13:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 12:13:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:13:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:13:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:13:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:13:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:13:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:13:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:13:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:13:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:13:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:13:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:13:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:13:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:13:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:13:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:13:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:13:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:13:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:13:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:13:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:13:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:13:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:13:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:13:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:13:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:13:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:13:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:13:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:13:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1428 proven. 587 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-03-18 12:13:32,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:32,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446546970] [2022-03-18 12:13:32,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446546970] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:32,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108339355] [2022-03-18 12:13:32,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:13:32,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:32,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:32,240 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:32,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-18 12:13:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:32,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-18 12:13:32,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-03-18 12:13:33,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-03-18 12:13:33,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108339355] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:33,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:33,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 102 [2022-03-18 12:13:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072513713] [2022-03-18 12:13:33,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:33,875 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-03-18 12:13:33,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:33,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-03-18 12:13:33,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2284, Invalid=8018, Unknown=0, NotChecked=0, Total=10302 [2022-03-18 12:13:33,876 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 102 states, 102 states have (on average 1.7156862745098038) internal successors, (175), 101 states have internal predecessors, (175), 65 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-03-18 12:13:35,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:35,343 INFO L93 Difference]: Finished difference Result 369 states and 402 transitions. [2022-03-18 12:13:35,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-18 12:13:35,344 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.7156862745098038) internal successors, (175), 101 states have internal predecessors, (175), 65 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 261 [2022-03-18 12:13:35,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:35,345 INFO L225 Difference]: With dead ends: 369 [2022-03-18 12:13:35,345 INFO L226 Difference]: Without dead ends: 265 [2022-03-18 12:13:35,347 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 551 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7635 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5157, Invalid=22565, Unknown=0, NotChecked=0, Total=27722 [2022-03-18 12:13:35,348 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 21 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:35,348 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 130 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:13:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-03-18 12:13:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-03-18 12:13:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 197 states have (on average 1.0101522842639594) internal successors, (199), 198 states have internal predecessors, (199), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-03-18 12:13:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2022-03-18 12:13:35,373 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 261 [2022-03-18 12:13:35,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:35,373 INFO L478 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2022-03-18 12:13:35,373 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.7156862745098038) internal successors, (175), 101 states have internal predecessors, (175), 65 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-03-18 12:13:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2022-03-18 12:13:35,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-03-18 12:13:35,375 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:35,375 INFO L500 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:35,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:35,589 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:35,590 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:35,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:35,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1891100020, now seen corresponding path program 62 times [2022-03-18 12:13:35,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:35,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245919891] [2022-03-18 12:13:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:35,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 12:13:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 12:13:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:13:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:13:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:13:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:13:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:13:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:13:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:13:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:13:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:13:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:13:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:13:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:13:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:13:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:13:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:13:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:13:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:13:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:13:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:13:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:13:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:13:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:13:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:13:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:35,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:13:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:36,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:13:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:36,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:13:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:36,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:13:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:36,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:13:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:36,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:13:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-03-18 12:13:36,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:36,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245919891] [2022-03-18 12:13:36,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245919891] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:36,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379330181] [2022-03-18 12:13:36,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:13:36,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:36,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:36,025 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:36,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-18 12:13:36,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:13:36,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:36,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-18 12:13:36,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-03-18 12:13:36,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-03-18 12:13:36,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379330181] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:36,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:36,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 41 [2022-03-18 12:13:36,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434010309] [2022-03-18 12:13:36,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:36,688 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-18 12:13:36,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-18 12:13:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=1030, Unknown=0, NotChecked=0, Total=1640 [2022-03-18 12:13:36,688 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 38 states have internal predecessors, (111), 33 states have call successors, (36), 4 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-18 12:13:37,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:37,256 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2022-03-18 12:13:37,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-18 12:13:37,256 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 38 states have internal predecessors, (111), 33 states have call successors, (36), 4 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 262 [2022-03-18 12:13:37,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:37,258 INFO L225 Difference]: With dead ends: 278 [2022-03-18 12:13:37,258 INFO L226 Difference]: Without dead ends: 276 [2022-03-18 12:13:37,258 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 615 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1822, Invalid=4184, Unknown=0, NotChecked=0, Total=6006 [2022-03-18 12:13:37,259 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 96 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:37,263 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 60 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:13:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-03-18 12:13:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2022-03-18 12:13:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-18 12:13:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2022-03-18 12:13:37,300 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 262 [2022-03-18 12:13:37,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:37,300 INFO L478 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2022-03-18 12:13:37,300 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 38 states have internal predecessors, (111), 33 states have call successors, (36), 4 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-18 12:13:37,300 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2022-03-18 12:13:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-03-18 12:13:37,302 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:37,302 INFO L500 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:37,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:37,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2022-03-18 12:13:37,523 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:37,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1447705498, now seen corresponding path program 63 times [2022-03-18 12:13:37,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:37,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042863130] [2022-03-18 12:13:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:37,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 12:13:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 12:13:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:13:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:13:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:13:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:13:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:13:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:13:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:13:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:13:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:13:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:13:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:13:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:13:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:13:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:13:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:13:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:13:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:13:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:13:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:13:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:13:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:13:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:13:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:13:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:13:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:13:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:13:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:13:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:13:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:13:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:13:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1522 proven. 622 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-03-18 12:13:38,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:38,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042863130] [2022-03-18 12:13:38,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042863130] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:38,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592195892] [2022-03-18 12:13:38,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:13:38,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:38,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:38,408 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:38,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-18 12:13:38,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2022-03-18 12:13:38,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:38,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 68 conjunts are in the unsatisfiable core [2022-03-18 12:13:38,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-03-18 12:13:39,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-03-18 12:13:40,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592195892] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:40,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:40,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 105 [2022-03-18 12:13:40,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777786912] [2022-03-18 12:13:40,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:40,110 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-03-18 12:13:40,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:40,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-03-18 12:13:40,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2421, Invalid=8499, Unknown=0, NotChecked=0, Total=10920 [2022-03-18 12:13:40,112 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 105 states, 105 states have (on average 1.7142857142857142) internal successors, (180), 104 states have internal predecessors, (180), 67 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-03-18 12:13:41,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:41,543 INFO L93 Difference]: Finished difference Result 380 states and 414 transitions. [2022-03-18 12:13:41,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-18 12:13:41,543 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.7142857142857142) internal successors, (180), 104 states have internal predecessors, (180), 67 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Word has length 269 [2022-03-18 12:13:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:41,545 INFO L225 Difference]: With dead ends: 380 [2022-03-18 12:13:41,545 INFO L226 Difference]: Without dead ends: 273 [2022-03-18 12:13:41,548 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8105 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5466, Invalid=23946, Unknown=0, NotChecked=0, Total=29412 [2022-03-18 12:13:41,549 INFO L912 BasicCegarLoop]: 44 mSDtfsCounter, 21 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:41,549 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 121 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:13:41,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-03-18 12:13:41,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-03-18 12:13:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 203 states have (on average 1.0098522167487685) internal successors, (205), 204 states have internal predecessors, (205), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-18 12:13:41,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2022-03-18 12:13:41,575 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 269 [2022-03-18 12:13:41,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:41,576 INFO L478 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2022-03-18 12:13:41,576 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.7142857142857142) internal successors, (180), 104 states have internal predecessors, (180), 67 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-03-18 12:13:41,576 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2022-03-18 12:13:41,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-03-18 12:13:41,577 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:41,577 INFO L500 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:41,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-03-18 12:13:41,783 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:41,783 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1796488914, now seen corresponding path program 64 times [2022-03-18 12:13:41,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:41,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243114348] [2022-03-18 12:13:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:41,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 12:13:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 12:13:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 12:13:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:13:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:13:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:13:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:13:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:13:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:13:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:13:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:13:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:13:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:13:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:13:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:13:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:13:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:13:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:13:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:13:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:13:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:13:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:13:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:13:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:13:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:13:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:13:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:13:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:13:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:13:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:13:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:13:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:13:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-03-18 12:13:42,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:42,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243114348] [2022-03-18 12:13:42,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243114348] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:42,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196012158] [2022-03-18 12:13:42,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:13:42,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:42,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:42,308 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:42,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-18 12:13:42,500 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:13:42,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:42,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 69 conjunts are in the unsatisfiable core [2022-03-18 12:13:42,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-03-18 12:13:42,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:43,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-03-18 12:13:43,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196012158] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:43,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:43,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 42 [2022-03-18 12:13:43,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4433864] [2022-03-18 12:13:43,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:43,038 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-18 12:13:43,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-18 12:13:43,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=1077, Unknown=0, NotChecked=0, Total=1722 [2022-03-18 12:13:43,039 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 39 states have internal predecessors, (114), 34 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-03-18 12:13:43,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:43,596 INFO L93 Difference]: Finished difference Result 286 states and 288 transitions. [2022-03-18 12:13:43,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-18 12:13:43,597 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 39 states have internal predecessors, (114), 34 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 270 [2022-03-18 12:13:43,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:43,598 INFO L225 Difference]: With dead ends: 286 [2022-03-18 12:13:43,598 INFO L226 Difference]: Without dead ends: 284 [2022-03-18 12:13:43,599 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 634 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1927, Invalid=4393, Unknown=0, NotChecked=0, Total=6320 [2022-03-18 12:13:43,599 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 102 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:43,599 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 55 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:13:43,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-03-18 12:13:43,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 280. [2022-03-18 12:13:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 209 states have internal predecessors, (210), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-03-18 12:13:43,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2022-03-18 12:13:43,637 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 270 [2022-03-18 12:13:43,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:43,637 INFO L478 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2022-03-18 12:13:43,638 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 39 states have internal predecessors, (114), 34 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-03-18 12:13:43,638 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2022-03-18 12:13:43,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-03-18 12:13:43,639 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:43,639 INFO L500 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:43,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:43,853 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-03-18 12:13:43,854 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:43,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:43,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1447674756, now seen corresponding path program 65 times [2022-03-18 12:13:43,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:43,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382240339] [2022-03-18 12:13:43,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:43,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 12:13:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 12:13:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 12:13:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:13:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:13:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:13:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:13:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:13:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:13:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:13:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:13:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:13:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:13:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:13:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:13:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:13:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:13:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:13:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:13:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:13:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:13:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:13:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:13:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:13:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:13:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:13:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:13:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:13:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:13:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:13:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:13:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:13:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:13:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1619 proven. 658 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-03-18 12:13:45,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:45,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382240339] [2022-03-18 12:13:45,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382240339] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:45,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410001835] [2022-03-18 12:13:45,259 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:13:45,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:45,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:45,276 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:45,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-18 12:13:45,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2022-03-18 12:13:45,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:45,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-18 12:13:45,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-03-18 12:13:47,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-03-18 12:13:48,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410001835] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:48,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:48,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 108 [2022-03-18 12:13:48,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244141984] [2022-03-18 12:13:48,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:48,286 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-03-18 12:13:48,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:48,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-03-18 12:13:48,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2562, Invalid=8994, Unknown=0, NotChecked=0, Total=11556 [2022-03-18 12:13:48,289 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 108 states, 108 states have (on average 1.712962962962963) internal successors, (185), 107 states have internal predecessors, (185), 69 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-03-18 12:13:50,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:50,824 INFO L93 Difference]: Finished difference Result 391 states and 426 transitions. [2022-03-18 12:13:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-18 12:13:50,825 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.712962962962963) internal successors, (185), 107 states have internal predecessors, (185), 69 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Word has length 277 [2022-03-18 12:13:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:50,826 INFO L225 Difference]: With dead ends: 391 [2022-03-18 12:13:50,826 INFO L226 Difference]: Without dead ends: 281 [2022-03-18 12:13:50,829 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 585 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8589 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5784, Invalid=25368, Unknown=0, NotChecked=0, Total=31152 [2022-03-18 12:13:50,829 INFO L912 BasicCegarLoop]: 45 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:50,829 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 117 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 12:13:50,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-03-18 12:13:50,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2022-03-18 12:13:50,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 209 states have (on average 1.0095693779904307) internal successors, (211), 210 states have internal predecessors, (211), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-03-18 12:13:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2022-03-18 12:13:50,858 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 277 [2022-03-18 12:13:50,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:50,858 INFO L478 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2022-03-18 12:13:50,858 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.712962962962963) internal successors, (185), 107 states have internal predecessors, (185), 69 states have call successors, (71), 3 states have call predecessors, (71), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-03-18 12:13:50,858 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2022-03-18 12:13:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-03-18 12:13:50,859 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:50,860 INFO L500 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:50,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:51,072 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-03-18 12:13:51,072 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:51,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:51,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1866102860, now seen corresponding path program 66 times [2022-03-18 12:13:51,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:51,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798525541] [2022-03-18 12:13:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:51,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 12:13:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 12:13:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:13:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:13:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:13:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:13:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:13:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:13:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:13:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:13:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:13:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:13:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:13:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:13:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:13:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:13:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:13:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:13:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:13:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:13:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:13:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:13:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:13:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:13:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:13:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:13:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:13:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:13:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:13:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:13:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:13:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:13:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:13:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-03-18 12:13:51,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:51,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798525541] [2022-03-18 12:13:51,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798525541] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:51,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709547237] [2022-03-18 12:13:51,667 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:13:51,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:51,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:51,669 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:51,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-18 12:13:51,837 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2022-03-18 12:13:51,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:51,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 71 conjunts are in the unsatisfiable core [2022-03-18 12:13:51,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:52,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-03-18 12:13:52,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-03-18 12:13:52,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709547237] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:52,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:52,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 43 [2022-03-18 12:13:52,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319438157] [2022-03-18 12:13:52,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:52,891 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-18 12:13:52,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:52,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-18 12:13:52,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=1125, Unknown=0, NotChecked=0, Total=1806 [2022-03-18 12:13:52,892 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 35 states have call successors, (38), 4 states have call predecessors, (38), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-18 12:13:53,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:53,807 INFO L93 Difference]: Finished difference Result 294 states and 296 transitions. [2022-03-18 12:13:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-18 12:13:53,807 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 35 states have call successors, (38), 4 states have call predecessors, (38), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 278 [2022-03-18 12:13:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:53,808 INFO L225 Difference]: With dead ends: 294 [2022-03-18 12:13:53,809 INFO L226 Difference]: Without dead ends: 292 [2022-03-18 12:13:53,810 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 653 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2035, Invalid=4607, Unknown=0, NotChecked=0, Total=6642 [2022-03-18 12:13:53,810 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 98 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:53,810 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 55 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:13:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-03-18 12:13:53,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 288. [2022-03-18 12:13:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 215 states have internal predecessors, (216), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-03-18 12:13:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2022-03-18 12:13:53,840 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 278 [2022-03-18 12:13:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:53,840 INFO L478 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2022-03-18 12:13:53,840 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 35 states have call successors, (38), 4 states have call predecessors, (38), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-03-18 12:13:53,840 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2022-03-18 12:13:53,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-03-18 12:13:53,841 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:53,841 INFO L500 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:53,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:54,058 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-03-18 12:13:54,058 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:54,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:54,058 INFO L85 PathProgramCache]: Analyzing trace with hash 196243110, now seen corresponding path program 67 times [2022-03-18 12:13:54,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:54,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187568508] [2022-03-18 12:13:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:54,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:54,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 12:13:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 12:13:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:13:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:13:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:13:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:13:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:13:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:13:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:13:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:13:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:13:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:13:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:13:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:13:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:13:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:13:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:13:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:13:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:13:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:13:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:13:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:13:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:13:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:13:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:13:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:13:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:13:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:13:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:13:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:13:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:13:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:13:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:13:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:13:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1719 proven. 695 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-03-18 12:13:55,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:55,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187568508] [2022-03-18 12:13:55,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187568508] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:55,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459047806] [2022-03-18 12:13:55,041 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:13:55,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:55,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:55,043 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:55,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-18 12:13:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:55,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-18 12:13:55,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-03-18 12:13:56,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:13:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-03-18 12:13:56,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459047806] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:13:56,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:13:56,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73, 73] total 111 [2022-03-18 12:13:56,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391268918] [2022-03-18 12:13:56,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:13:56,830 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-03-18 12:13:56,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:13:56,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-03-18 12:13:56,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=9503, Unknown=0, NotChecked=0, Total=12210 [2022-03-18 12:13:56,832 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand has 111 states, 111 states have (on average 1.7117117117117118) internal successors, (190), 110 states have internal predecessors, (190), 71 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-03-18 12:13:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:13:58,374 INFO L93 Difference]: Finished difference Result 402 states and 438 transitions. [2022-03-18 12:13:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-18 12:13:58,375 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 1.7117117117117118) internal successors, (190), 110 states have internal predecessors, (190), 71 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Word has length 285 [2022-03-18 12:13:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:13:58,376 INFO L225 Difference]: With dead ends: 402 [2022-03-18 12:13:58,376 INFO L226 Difference]: Without dead ends: 289 [2022-03-18 12:13:58,378 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9087 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6111, Invalid=26831, Unknown=0, NotChecked=0, Total=32942 [2022-03-18 12:13:58,378 INFO L912 BasicCegarLoop]: 46 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:13:58,379 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 113 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:13:58,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-03-18 12:13:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-03-18 12:13:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 215 states have (on average 1.0093023255813953) internal successors, (217), 216 states have internal predecessors, (217), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-03-18 12:13:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2022-03-18 12:13:58,408 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 285 [2022-03-18 12:13:58,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:13:58,408 INFO L478 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2022-03-18 12:13:58,408 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 1.7117117117117118) internal successors, (190), 110 states have internal predecessors, (190), 71 states have call successors, (73), 3 states have call predecessors, (73), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-03-18 12:13:58,408 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2022-03-18 12:13:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-03-18 12:13:58,409 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:13:58,410 INFO L500 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:13:58,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-18 12:13:58,631 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-03-18 12:13:58,631 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:13:58,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:13:58,632 INFO L85 PathProgramCache]: Analyzing trace with hash 673569646, now seen corresponding path program 68 times [2022-03-18 12:13:58,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:13:58,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432124411] [2022-03-18 12:13:58,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:13:58,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:13:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:13:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 12:13:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 12:13:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:13:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:13:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:13:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:13:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:13:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:13:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:13:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:13:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:13:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:13:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:13:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:13:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:13:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:13:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:13:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:13:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:13:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:13:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:13:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:13:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:13:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:13:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:13:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:13:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:13:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:13:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:13:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:13:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:13:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:13:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:13:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:13:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:13:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-03-18 12:13:59,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:13:59,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432124411] [2022-03-18 12:13:59,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432124411] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:13:59,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087250484] [2022-03-18 12:13:59,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:13:59,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:13:59,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:13:59,280 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:13:59,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-18 12:13:59,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:13:59,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:13:59,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 73 conjunts are in the unsatisfiable core [2022-03-18 12:13:59,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:13:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-03-18 12:13:59,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-03-18 12:14:00,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087250484] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:00,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:00,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 44 [2022-03-18 12:14:00,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843250357] [2022-03-18 12:14:00,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:00,149 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-18 12:14:00,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:00,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-18 12:14:00,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=718, Invalid=1174, Unknown=0, NotChecked=0, Total=1892 [2022-03-18 12:14:00,149 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand has 44 states, 44 states have (on average 2.727272727272727) internal successors, (120), 41 states have internal predecessors, (120), 36 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-03-18 12:14:00,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:00,972 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2022-03-18 12:14:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-18 12:14:00,973 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.727272727272727) internal successors, (120), 41 states have internal predecessors, (120), 36 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 286 [2022-03-18 12:14:00,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:00,974 INFO L225 Difference]: With dead ends: 302 [2022-03-18 12:14:00,974 INFO L226 Difference]: Without dead ends: 300 [2022-03-18 12:14:00,975 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 672 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1338 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2146, Invalid=4826, Unknown=0, NotChecked=0, Total=6972 [2022-03-18 12:14:00,975 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 101 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:00,975 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 45 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:14:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-03-18 12:14:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 296. [2022-03-18 12:14:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-03-18 12:14:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2022-03-18 12:14:00,998 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 286 [2022-03-18 12:14:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:00,998 INFO L478 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2022-03-18 12:14:00,998 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.727272727272727) internal successors, (120), 41 states have internal predecessors, (120), 36 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-03-18 12:14:00,998 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2022-03-18 12:14:00,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-03-18 12:14:00,999 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:00,999 INFO L500 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:01,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-03-18 12:14:01,217 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:01,218 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:01,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:01,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1688838468, now seen corresponding path program 69 times [2022-03-18 12:14:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:01,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678973320] [2022-03-18 12:14:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:01,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-18 12:14:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 12:14:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:14:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:14:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:14:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:14:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:14:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:14:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:14:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:14:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:14:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:14:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:14:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:14:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:14:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:14:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:14:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:14:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:14:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:14:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:14:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:14:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:14:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:14:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:14:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:14:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:14:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:14:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:14:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:14:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:14:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:14:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:14:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:14:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:14:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1822 proven. 733 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-03-18 12:14:02,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:02,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678973320] [2022-03-18 12:14:02,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678973320] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:02,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423707114] [2022-03-18 12:14:02,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:14:02,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:02,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:02,425 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:02,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-18 12:14:02,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2022-03-18 12:14:02,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:14:02,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 74 conjunts are in the unsatisfiable core [2022-03-18 12:14:02,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-03-18 12:14:04,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:04,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-03-18 12:14:04,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423707114] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:04,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:04,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 75] total 114 [2022-03-18 12:14:04,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798418895] [2022-03-18 12:14:04,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:04,348 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-03-18 12:14:04,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:04,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-03-18 12:14:04,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2856, Invalid=10026, Unknown=0, NotChecked=0, Total=12882 [2022-03-18 12:14:04,351 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 114 states, 114 states have (on average 1.7105263157894737) internal successors, (195), 113 states have internal predecessors, (195), 73 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-03-18 12:14:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:06,049 INFO L93 Difference]: Finished difference Result 413 states and 450 transitions. [2022-03-18 12:14:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-18 12:14:06,049 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.7105263157894737) internal successors, (195), 113 states have internal predecessors, (195), 73 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 293 [2022-03-18 12:14:06,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:06,051 INFO L225 Difference]: With dead ends: 413 [2022-03-18 12:14:06,051 INFO L226 Difference]: Without dead ends: 297 [2022-03-18 12:14:06,055 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 619 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9599 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6447, Invalid=28335, Unknown=0, NotChecked=0, Total=34782 [2022-03-18 12:14:06,055 INFO L912 BasicCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:06,055 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 134 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:14:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-03-18 12:14:06,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-03-18 12:14:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 221 states have (on average 1.009049773755656) internal successors, (223), 222 states have internal predecessors, (223), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-03-18 12:14:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2022-03-18 12:14:06,102 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 293 [2022-03-18 12:14:06,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:06,102 INFO L478 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2022-03-18 12:14:06,103 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.7105263157894737) internal successors, (195), 113 states have internal predecessors, (195), 73 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-03-18 12:14:06,103 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2022-03-18 12:14:06,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-03-18 12:14:06,111 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:06,112 INFO L500 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:06,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-18 12:14:06,331 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:06,332 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:06,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash 308790796, now seen corresponding path program 70 times [2022-03-18 12:14:06,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:06,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364853410] [2022-03-18 12:14:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:06,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:06,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 12:14:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 12:14:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:14:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:14:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:14:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:14:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:14:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:14:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:14:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:14:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:14:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:14:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:14:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:14:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:14:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:14:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:14:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:14:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:14:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:14:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:14:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:14:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:14:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:14:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:14:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:14:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:14:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:14:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:14:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:14:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:14:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:14:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:14:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:14:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:14:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-03-18 12:14:07,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:07,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364853410] [2022-03-18 12:14:07,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364853410] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:07,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987531385] [2022-03-18 12:14:07,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:14:07,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:07,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:07,061 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:07,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-18 12:14:07,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:14:07,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:14:07,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 75 conjunts are in the unsatisfiable core [2022-03-18 12:14:07,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-03-18 12:14:07,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-03-18 12:14:07,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987531385] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:07,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:07,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 45 [2022-03-18 12:14:07,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808920799] [2022-03-18 12:14:07,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:07,953 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-18 12:14:07,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:07,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-18 12:14:07,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=756, Invalid=1224, Unknown=0, NotChecked=0, Total=1980 [2022-03-18 12:14:07,953 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 37 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-03-18 12:14:08,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:08,583 INFO L93 Difference]: Finished difference Result 310 states and 312 transitions. [2022-03-18 12:14:08,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-18 12:14:08,584 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 37 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 294 [2022-03-18 12:14:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:08,585 INFO L225 Difference]: With dead ends: 310 [2022-03-18 12:14:08,585 INFO L226 Difference]: Without dead ends: 308 [2022-03-18 12:14:08,587 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 691 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2260, Invalid=5050, Unknown=0, NotChecked=0, Total=7310 [2022-03-18 12:14:08,587 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 110 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:08,587 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 45 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:14:08,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-03-18 12:14:08,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2022-03-18 12:14:08,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 226 states have (on average 1.008849557522124) internal successors, (228), 227 states have internal predecessors, (228), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-03-18 12:14:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2022-03-18 12:14:08,620 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 294 [2022-03-18 12:14:08,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:08,620 INFO L478 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2022-03-18 12:14:08,620 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 37 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-03-18 12:14:08,620 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2022-03-18 12:14:08,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-03-18 12:14:08,622 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:08,622 INFO L500 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:08,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-03-18 12:14:08,843 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:08,843 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:08,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:08,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1891227418, now seen corresponding path program 71 times [2022-03-18 12:14:08,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:08,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814352031] [2022-03-18 12:14:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:08,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 12:14:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 12:14:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:14:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:14:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:14:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:14:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:14:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:14:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:14:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:14:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:14:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:14:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:14:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:14:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:14:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:14:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:14:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:14:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:14:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:14:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:14:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:14:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:14:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:14:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:14:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:14:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:14:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:14:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:14:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:14:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:14:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:14:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:14:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:14:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:14:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:14:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 1928 proven. 772 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-03-18 12:14:09,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:09,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814352031] [2022-03-18 12:14:09,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814352031] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:09,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985320408] [2022-03-18 12:14:09,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:14:09,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:09,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:09,883 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:09,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-18 12:14:10,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2022-03-18 12:14:10,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:14:10,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 76 conjunts are in the unsatisfiable core [2022-03-18 12:14:10,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-03-18 12:14:11,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-03-18 12:14:11,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985320408] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:11,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:11,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 117 [2022-03-18 12:14:11,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656795020] [2022-03-18 12:14:11,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:11,905 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-03-18 12:14:11,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:11,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-03-18 12:14:11,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3009, Invalid=10563, Unknown=0, NotChecked=0, Total=13572 [2022-03-18 12:14:11,907 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 117 states, 117 states have (on average 1.7094017094017093) internal successors, (200), 116 states have internal predecessors, (200), 75 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2022-03-18 12:14:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:13,688 INFO L93 Difference]: Finished difference Result 424 states and 462 transitions. [2022-03-18 12:14:13,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-18 12:14:13,688 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 1.7094017094017093) internal successors, (200), 116 states have internal predecessors, (200), 75 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Word has length 301 [2022-03-18 12:14:13,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:13,690 INFO L225 Difference]: With dead ends: 424 [2022-03-18 12:14:13,690 INFO L226 Difference]: Without dead ends: 305 [2022-03-18 12:14:13,692 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 636 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10125 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6792, Invalid=29880, Unknown=0, NotChecked=0, Total=36672 [2022-03-18 12:14:13,693 INFO L912 BasicCegarLoop]: 48 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:13,693 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 120 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:14:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-03-18 12:14:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-03-18 12:14:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 227 states have (on average 1.0088105726872247) internal successors, (229), 228 states have internal predecessors, (229), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-03-18 12:14:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2022-03-18 12:14:13,726 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 301 [2022-03-18 12:14:13,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:13,727 INFO L478 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2022-03-18 12:14:13,727 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 1.7094017094017093) internal successors, (200), 116 states have internal predecessors, (200), 75 states have call successors, (77), 3 states have call predecessors, (77), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2022-03-18 12:14:13,727 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2022-03-18 12:14:13,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-03-18 12:14:13,729 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:13,729 INFO L500 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:13,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-18 12:14:13,951 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-03-18 12:14:13,951 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:13,952 INFO L85 PathProgramCache]: Analyzing trace with hash 337053102, now seen corresponding path program 72 times [2022-03-18 12:14:13,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:13,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099974843] [2022-03-18 12:14:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:13,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 12:14:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 12:14:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:14:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:14:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:14:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:14:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:14:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:14:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:14:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:14:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:14:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:14:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:14:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:14:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:14:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:14:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:14:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:14:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:14:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:14:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:14:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:14:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:14:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:14:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:14:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:14:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:14:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:14:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:14:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:14:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:14:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:14:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:14:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:14:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:14:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:14:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-03-18 12:14:14,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:14,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099974843] [2022-03-18 12:14:14,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099974843] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:14,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161788395] [2022-03-18 12:14:14,539 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:14:14,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:14,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:14,545 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:14,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-18 12:14:14,718 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2022-03-18 12:14:14,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:14:14,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 77 conjunts are in the unsatisfiable core [2022-03-18 12:14:14,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-03-18 12:14:14,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-03-18 12:14:15,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161788395] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:15,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:15,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 42] total 46 [2022-03-18 12:14:15,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750229891] [2022-03-18 12:14:15,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:15,272 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-18 12:14:15,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-18 12:14:15,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=795, Invalid=1275, Unknown=0, NotChecked=0, Total=2070 [2022-03-18 12:14:15,274 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 38 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-03-18 12:14:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:15,876 INFO L93 Difference]: Finished difference Result 318 states and 320 transitions. [2022-03-18 12:14:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-18 12:14:15,877 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 38 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 302 [2022-03-18 12:14:15,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:15,878 INFO L225 Difference]: With dead ends: 318 [2022-03-18 12:14:15,878 INFO L226 Difference]: Without dead ends: 316 [2022-03-18 12:14:15,879 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 710 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2377, Invalid=5279, Unknown=0, NotChecked=0, Total=7656 [2022-03-18 12:14:15,879 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 112 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:15,879 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 35 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:14:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-03-18 12:14:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 312. [2022-03-18 12:14:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 states have internal predecessors, (234), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-03-18 12:14:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2022-03-18 12:14:15,913 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 302 [2022-03-18 12:14:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:15,913 INFO L478 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2022-03-18 12:14:15,913 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 38 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-03-18 12:14:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2022-03-18 12:14:15,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-03-18 12:14:15,915 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:15,915 INFO L500 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:15,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-03-18 12:14:16,135 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:16,135 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:16,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:16,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1094741764, now seen corresponding path program 73 times [2022-03-18 12:14:16,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:16,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968516039] [2022-03-18 12:14:16,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:16,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 12:14:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 12:14:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:14:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:14:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:14:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:14:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:14:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:14:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:14:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:14:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:14:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:14:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:14:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:14:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:14:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:14:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:14:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:14:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:14:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:14:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:14:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:14:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:14:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:14:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:14:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:14:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:14:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:14:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:14:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:14:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:14:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:14:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:14:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:14:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:14:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:14:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:14:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2037 proven. 812 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-03-18 12:14:17,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:17,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968516039] [2022-03-18 12:14:17,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968516039] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:17,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148309762] [2022-03-18 12:14:17,297 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:14:17,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:17,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:17,312 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:17,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-18 12:14:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:17,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 78 conjunts are in the unsatisfiable core [2022-03-18 12:14:17,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-03-18 12:14:19,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-03-18 12:14:19,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148309762] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:19,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:19,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79, 79] total 120 [2022-03-18 12:14:19,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413683896] [2022-03-18 12:14:19,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:19,492 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-03-18 12:14:19,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:19,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-03-18 12:14:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3166, Invalid=11114, Unknown=0, NotChecked=0, Total=14280 [2022-03-18 12:14:19,495 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 120 states, 120 states have (on average 1.7083333333333333) internal successors, (205), 119 states have internal predecessors, (205), 77 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2022-03-18 12:14:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:21,259 INFO L93 Difference]: Finished difference Result 435 states and 474 transitions. [2022-03-18 12:14:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-18 12:14:21,259 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 1.7083333333333333) internal successors, (205), 119 states have internal predecessors, (205), 77 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Word has length 309 [2022-03-18 12:14:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:21,261 INFO L225 Difference]: With dead ends: 435 [2022-03-18 12:14:21,261 INFO L226 Difference]: Without dead ends: 313 [2022-03-18 12:14:21,265 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 653 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10665 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7146, Invalid=31466, Unknown=0, NotChecked=0, Total=38612 [2022-03-18 12:14:21,265 INFO L912 BasicCegarLoop]: 49 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1950 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 2109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:21,265 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 116 Invalid, 2109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1950 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:14:21,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-03-18 12:14:21,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-03-18 12:14:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 233 states have (on average 1.0085836909871244) internal successors, (235), 234 states have internal predecessors, (235), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-03-18 12:14:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2022-03-18 12:14:21,301 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 309 [2022-03-18 12:14:21,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:21,301 INFO L478 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2022-03-18 12:14:21,301 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 1.7083333333333333) internal successors, (205), 119 states have internal predecessors, (205), 77 states have call successors, (79), 3 states have call predecessors, (79), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2022-03-18 12:14:21,301 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2022-03-18 12:14:21,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-03-18 12:14:21,303 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:21,303 INFO L500 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:21,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-03-18 12:14:21,524 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:21,525 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:21,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:21,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1695808564, now seen corresponding path program 74 times [2022-03-18 12:14:21,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:21,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905308040] [2022-03-18 12:14:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:21,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:21,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:14:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 12:14:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:21,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:14:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:21,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:14:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:21,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:14:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:21,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:14:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:14:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:14:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:14:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:14:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:14:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:14:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:14:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:14:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:14:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:14:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:14:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:14:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:14:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:14:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:14:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:14:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:14:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:14:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:14:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:14:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:14:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:14:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:14:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:14:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:14:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:14:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:14:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:14:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:14:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:14:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:14:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-03-18 12:14:22,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:22,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905308040] [2022-03-18 12:14:22,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905308040] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:22,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912299184] [2022-03-18 12:14:22,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:14:22,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:22,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:22,068 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:22,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-18 12:14:22,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:14:22,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:14:22,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 79 conjunts are in the unsatisfiable core [2022-03-18 12:14:22,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:22,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-03-18 12:14:22,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-03-18 12:14:22,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912299184] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:22,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:22,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 47 [2022-03-18 12:14:22,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741264018] [2022-03-18 12:14:22,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:22,790 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-18 12:14:22,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:22,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-18 12:14:22,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=835, Invalid=1327, Unknown=0, NotChecked=0, Total=2162 [2022-03-18 12:14:22,791 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand has 47 states, 47 states have (on average 2.74468085106383) internal successors, (129), 44 states have internal predecessors, (129), 39 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-03-18 12:14:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:23,438 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2022-03-18 12:14:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-18 12:14:23,438 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.74468085106383) internal successors, (129), 44 states have internal predecessors, (129), 39 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 310 [2022-03-18 12:14:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:23,440 INFO L225 Difference]: With dead ends: 326 [2022-03-18 12:14:23,440 INFO L226 Difference]: Without dead ends: 324 [2022-03-18 12:14:23,441 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 729 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2497, Invalid=5513, Unknown=0, NotChecked=0, Total=8010 [2022-03-18 12:14:23,441 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 107 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:23,442 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 65 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:14:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-03-18 12:14:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 320. [2022-03-18 12:14:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 239 states have internal predecessors, (240), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-03-18 12:14:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2022-03-18 12:14:23,478 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 310 [2022-03-18 12:14:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:23,479 INFO L478 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2022-03-18 12:14:23,479 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.74468085106383) internal successors, (129), 44 states have internal predecessors, (129), 39 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-03-18 12:14:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2022-03-18 12:14:23,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-03-18 12:14:23,480 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:23,481 INFO L500 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:23,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-18 12:14:23,703 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-03-18 12:14:23,704 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:23,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:23,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1160449242, now seen corresponding path program 75 times [2022-03-18 12:14:23,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:23,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265045487] [2022-03-18 12:14:23,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:23,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-03-18 12:14:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 12:14:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:14:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:14:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:14:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:14:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:14:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:14:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:14:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:14:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:14:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:14:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:14:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:14:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:14:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:14:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:14:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:14:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:14:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:14:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:14:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:14:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:14:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:14:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:14:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:14:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:14:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:14:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:14:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:14:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:14:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:14:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:14:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:14:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:14:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:14:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:14:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:14:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2149 proven. 853 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-03-18 12:14:24,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:24,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265045487] [2022-03-18 12:14:24,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265045487] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:24,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731396447] [2022-03-18 12:14:24,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:14:24,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:24,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:24,911 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:24,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-18 12:14:25,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2022-03-18 12:14:25,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:14:25,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-18 12:14:25,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-03-18 12:14:26,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-03-18 12:14:27,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731396447] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:27,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:27,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81, 81] total 123 [2022-03-18 12:14:27,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001189607] [2022-03-18 12:14:27,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:27,085 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-03-18 12:14:27,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-03-18 12:14:27,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3327, Invalid=11679, Unknown=0, NotChecked=0, Total=15006 [2022-03-18 12:14:27,087 INFO L87 Difference]: Start difference. First operand 320 states and 321 transitions. Second operand has 123 states, 123 states have (on average 1.7073170731707317) internal successors, (210), 122 states have internal predecessors, (210), 79 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-03-18 12:14:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:28,971 INFO L93 Difference]: Finished difference Result 446 states and 486 transitions. [2022-03-18 12:14:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-03-18 12:14:28,972 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.7073170731707317) internal successors, (210), 122 states have internal predecessors, (210), 79 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Word has length 317 [2022-03-18 12:14:28,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:28,973 INFO L225 Difference]: With dead ends: 446 [2022-03-18 12:14:28,973 INFO L226 Difference]: Without dead ends: 321 [2022-03-18 12:14:28,976 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 670 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11219 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=7509, Invalid=33093, Unknown=0, NotChecked=0, Total=40602 [2022-03-18 12:14:28,978 INFO L912 BasicCegarLoop]: 50 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:28,978 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 122 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:14:28,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-03-18 12:14:29,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-03-18 12:14:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 239 states have (on average 1.00836820083682) internal successors, (241), 240 states have internal predecessors, (241), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-03-18 12:14:29,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2022-03-18 12:14:29,015 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 317 [2022-03-18 12:14:29,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:29,015 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2022-03-18 12:14:29,015 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.7073170731707317) internal successors, (210), 122 states have internal predecessors, (210), 79 states have call successors, (81), 3 states have call predecessors, (81), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-03-18 12:14:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2022-03-18 12:14:29,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-03-18 12:14:29,030 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:29,030 INFO L500 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:29,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-18 12:14:29,263 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-03-18 12:14:29,263 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:29,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:29,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1625079826, now seen corresponding path program 76 times [2022-03-18 12:14:29,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:29,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927909076] [2022-03-18 12:14:29,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:29,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 12:14:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:14:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:14:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:14:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:14:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:14:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:14:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:14:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:14:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:14:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:14:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:14:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:14:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:14:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:14:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:14:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:14:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:14:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:14:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:14:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:14:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:14:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:14:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:14:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:14:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:14:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:14:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:14:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:14:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:14:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:14:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:14:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:14:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:14:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:14:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:14:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:14:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:14:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-03-18 12:14:29,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:29,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927909076] [2022-03-18 12:14:29,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927909076] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:29,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844333258] [2022-03-18 12:14:29,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:14:29,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:29,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:29,812 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:29,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-18 12:14:29,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:14:29,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:14:29,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 81 conjunts are in the unsatisfiable core [2022-03-18 12:14:29,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-03-18 12:14:30,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-03-18 12:14:30,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844333258] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:30,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:30,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 48 [2022-03-18 12:14:30,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561270359] [2022-03-18 12:14:30,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:30,559 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-18 12:14:30,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:30,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-18 12:14:30,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2022-03-18 12:14:30,560 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand has 48 states, 48 states have (on average 2.75) internal successors, (132), 45 states have internal predecessors, (132), 40 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-03-18 12:14:31,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:31,221 INFO L93 Difference]: Finished difference Result 334 states and 336 transitions. [2022-03-18 12:14:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-18 12:14:31,221 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.75) internal successors, (132), 45 states have internal predecessors, (132), 40 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 318 [2022-03-18 12:14:31,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:31,223 INFO L225 Difference]: With dead ends: 334 [2022-03-18 12:14:31,223 INFO L226 Difference]: Without dead ends: 332 [2022-03-18 12:14:31,224 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 748 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1568 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2620, Invalid=5752, Unknown=0, NotChecked=0, Total=8372 [2022-03-18 12:14:31,224 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 107 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:31,224 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 55 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:14:31,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-03-18 12:14:31,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 328. [2022-03-18 12:14:31,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 245 states have internal predecessors, (246), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-03-18 12:14:31,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2022-03-18 12:14:31,262 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 318 [2022-03-18 12:14:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:31,263 INFO L478 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2022-03-18 12:14:31,263 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.75) internal successors, (132), 45 states have internal predecessors, (132), 40 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-03-18 12:14:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2022-03-18 12:14:31,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-03-18 12:14:31,264 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:31,265 INFO L500 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:31,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-18 12:14:31,485 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:31,485 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:31,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:31,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1831480516, now seen corresponding path program 77 times [2022-03-18 12:14:31,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:31,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593879942] [2022-03-18 12:14:31,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:31,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-03-18 12:14:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:14:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:14:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:14:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:14:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:14:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:14:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:14:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:14:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:14:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:14:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:14:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:14:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:14:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:14:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:14:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:14:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:14:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:14:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:14:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:14:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:14:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:14:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:14:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:14:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:14:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:14:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:14:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:14:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:14:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:14:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:14:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:14:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:14:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:14:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:14:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:14:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:14:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:14:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2264 proven. 895 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-03-18 12:14:32,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:32,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593879942] [2022-03-18 12:14:32,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593879942] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:32,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106241274] [2022-03-18 12:14:32,766 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:14:32,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:32,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:32,768 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:32,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-18 12:14:32,944 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2022-03-18 12:14:32,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:14:32,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 82 conjunts are in the unsatisfiable core [2022-03-18 12:14:32,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-03-18 12:14:34,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-03-18 12:14:35,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106241274] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:35,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:35,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83, 83] total 126 [2022-03-18 12:14:35,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676523243] [2022-03-18 12:14:35,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:35,019 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-03-18 12:14:35,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:35,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-03-18 12:14:35,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3492, Invalid=12258, Unknown=0, NotChecked=0, Total=15750 [2022-03-18 12:14:35,022 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand has 126 states, 126 states have (on average 1.7063492063492063) internal successors, (215), 125 states have internal predecessors, (215), 81 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-03-18 12:14:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:37,037 INFO L93 Difference]: Finished difference Result 457 states and 498 transitions. [2022-03-18 12:14:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-18 12:14:37,037 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 1.7063492063492063) internal successors, (215), 125 states have internal predecessors, (215), 81 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 325 [2022-03-18 12:14:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:37,039 INFO L225 Difference]: With dead ends: 457 [2022-03-18 12:14:37,039 INFO L226 Difference]: Without dead ends: 329 [2022-03-18 12:14:37,044 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 687 SyntacticMatches, 1 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11787 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=7881, Invalid=34761, Unknown=0, NotChecked=0, Total=42642 [2022-03-18 12:14:37,044 INFO L912 BasicCegarLoop]: 51 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 2128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:37,044 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 113 Invalid, 2128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:14:37,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-03-18 12:14:37,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-03-18 12:14:37,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 245 states have (on average 1.0081632653061225) internal successors, (247), 246 states have internal predecessors, (247), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-03-18 12:14:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2022-03-18 12:14:37,081 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 325 [2022-03-18 12:14:37,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:37,082 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2022-03-18 12:14:37,082 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 1.7063492063492063) internal successors, (215), 125 states have internal predecessors, (215), 81 states have call successors, (83), 3 states have call predecessors, (83), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-03-18 12:14:37,082 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2022-03-18 12:14:37,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-03-18 12:14:37,083 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:37,084 INFO L500 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:37,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-18 12:14:37,305 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:37,306 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:37,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1239626124, now seen corresponding path program 78 times [2022-03-18 12:14:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:37,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273725810] [2022-03-18 12:14:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:37,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 12:14:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 12:14:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:14:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:14:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:14:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:14:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:14:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:14:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:14:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:14:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:14:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:14:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:14:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:14:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:14:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:14:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:14:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:14:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:14:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:14:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:14:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:14:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:14:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:14:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:14:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:14:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:14:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:14:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:14:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:14:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:14:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:14:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:14:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:14:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:14:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:14:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:14:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:14:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:14:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-03-18 12:14:37,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:37,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273725810] [2022-03-18 12:14:37,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273725810] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:37,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841314526] [2022-03-18 12:14:37,893 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:14:37,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:37,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:37,895 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:37,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-18 12:14:38,083 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2022-03-18 12:14:38,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:14:38,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 83 conjunts are in the unsatisfiable core [2022-03-18 12:14:38,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-03-18 12:14:38,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-03-18 12:14:38,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841314526] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:38,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:38,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 49 [2022-03-18 12:14:38,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10535290] [2022-03-18 12:14:38,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:38,670 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-18 12:14:38,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-18 12:14:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=918, Invalid=1434, Unknown=0, NotChecked=0, Total=2352 [2022-03-18 12:14:38,671 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 46 states have internal predecessors, (135), 41 states have call successors, (44), 4 states have call predecessors, (44), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-03-18 12:14:39,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:39,367 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2022-03-18 12:14:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-18 12:14:39,368 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 46 states have internal predecessors, (135), 41 states have call successors, (44), 4 states have call predecessors, (44), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 326 [2022-03-18 12:14:39,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:39,369 INFO L225 Difference]: With dead ends: 342 [2022-03-18 12:14:39,369 INFO L226 Difference]: Without dead ends: 340 [2022-03-18 12:14:39,371 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 767 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2746, Invalid=5996, Unknown=0, NotChecked=0, Total=8742 [2022-03-18 12:14:39,371 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 113 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:39,371 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 70 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:14:39,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-03-18 12:14:39,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2022-03-18 12:14:39,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-03-18 12:14:39,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2022-03-18 12:14:39,448 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 326 [2022-03-18 12:14:39,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:39,448 INFO L478 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2022-03-18 12:14:39,448 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 46 states have internal predecessors, (135), 41 states have call successors, (44), 4 states have call predecessors, (44), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-03-18 12:14:39,448 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2022-03-18 12:14:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-03-18 12:14:39,450 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:39,450 INFO L500 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:39,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-03-18 12:14:39,677 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-03-18 12:14:39,678 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:39,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash 365088102, now seen corresponding path program 79 times [2022-03-18 12:14:39,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:39,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853772302] [2022-03-18 12:14:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:39,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 12:14:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 12:14:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:14:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:14:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:14:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:14:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:14:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:14:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:14:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:14:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:14:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:14:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:14:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:14:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:14:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:14:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:14:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:14:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:14:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:14:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:14:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:14:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:14:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:14:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:14:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:14:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:14:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:14:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:14:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:14:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:14:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:14:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:14:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:14:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:14:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:14:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:14:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:14:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:14:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:14:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2382 proven. 938 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-03-18 12:14:41,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:41,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853772302] [2022-03-18 12:14:41,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853772302] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:41,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327152674] [2022-03-18 12:14:41,890 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:14:41,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:41,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:41,904 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:41,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-18 12:14:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:42,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 84 conjunts are in the unsatisfiable core [2022-03-18 12:14:42,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-03-18 12:14:45,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-03-18 12:14:45,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327152674] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:45,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:45,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85, 85] total 129 [2022-03-18 12:14:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886294141] [2022-03-18 12:14:45,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:45,935 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-03-18 12:14:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:45,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-03-18 12:14:45,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3661, Invalid=12851, Unknown=0, NotChecked=0, Total=16512 [2022-03-18 12:14:45,937 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 129 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 128 states have internal predecessors, (220), 83 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-03-18 12:14:48,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:48,612 INFO L93 Difference]: Finished difference Result 468 states and 510 transitions. [2022-03-18 12:14:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-18 12:14:48,613 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 128 states have internal predecessors, (220), 83 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 333 [2022-03-18 12:14:48,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:48,615 INFO L225 Difference]: With dead ends: 468 [2022-03-18 12:14:48,615 INFO L226 Difference]: Without dead ends: 337 [2022-03-18 12:14:48,621 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 704 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12369 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=8262, Invalid=36470, Unknown=0, NotChecked=0, Total=44732 [2022-03-18 12:14:48,621 INFO L912 BasicCegarLoop]: 52 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:48,621 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 109 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 12:14:48,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-03-18 12:14:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2022-03-18 12:14:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 251 states have (on average 1.0079681274900398) internal successors, (253), 252 states have internal predecessors, (253), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-03-18 12:14:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2022-03-18 12:14:48,660 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 333 [2022-03-18 12:14:48,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:48,676 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2022-03-18 12:14:48,677 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 128 states have internal predecessors, (220), 83 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-03-18 12:14:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2022-03-18 12:14:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-03-18 12:14:48,678 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:48,678 INFO L500 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:48,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-18 12:14:48,891 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:48,892 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash 279874094, now seen corresponding path program 80 times [2022-03-18 12:14:48,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:48,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991240793] [2022-03-18 12:14:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:48,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 12:14:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:14:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:14:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:14:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:14:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:14:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:14:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:14:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:14:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:14:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:14:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:14:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:14:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:14:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:14:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:14:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:14:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:14:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:14:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:14:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:14:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:14:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:14:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:14:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:14:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:14:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:14:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:14:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:14:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:14:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:14:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:14:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:14:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-03-18 12:14:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-18 12:14:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-03-18 12:14:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-18 12:14:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-03-18 12:14:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-18 12:14:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-03-18 12:14:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-03-18 12:14:49,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:49,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991240793] [2022-03-18 12:14:49,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991240793] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:49,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263133559] [2022-03-18 12:14:49,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:14:49,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:49,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:49,520 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:49,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-18 12:14:49,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:14:49,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:14:49,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 85 conjunts are in the unsatisfiable core [2022-03-18 12:14:49,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-03-18 12:14:50,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-03-18 12:14:50,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263133559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:50,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:50,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 50 [2022-03-18 12:14:50,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151403050] [2022-03-18 12:14:50,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:50,632 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-18 12:14:50,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:50,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-18 12:14:50,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=961, Invalid=1489, Unknown=0, NotChecked=0, Total=2450 [2022-03-18 12:14:50,633 INFO L87 Difference]: Start difference. First operand 337 states and 338 transitions. Second operand has 50 states, 50 states have (on average 2.76) internal successors, (138), 47 states have internal predecessors, (138), 42 states have call successors, (45), 4 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-03-18 12:14:51,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:51,332 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2022-03-18 12:14:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-18 12:14:51,332 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.76) internal successors, (138), 47 states have internal predecessors, (138), 42 states have call successors, (45), 4 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 334 [2022-03-18 12:14:51,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:51,342 INFO L225 Difference]: With dead ends: 350 [2022-03-18 12:14:51,342 INFO L226 Difference]: Without dead ends: 348 [2022-03-18 12:14:51,343 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 786 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2875, Invalid=6245, Unknown=0, NotChecked=0, Total=9120 [2022-03-18 12:14:51,344 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 112 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:51,344 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 55 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:14:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-03-18 12:14:51,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2022-03-18 12:14:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.0078125) internal successors, (258), 257 states have internal predecessors, (258), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-03-18 12:14:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2022-03-18 12:14:51,388 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 334 [2022-03-18 12:14:51,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:51,389 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2022-03-18 12:14:51,389 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.76) internal successors, (138), 47 states have internal predecessors, (138), 42 states have call successors, (45), 4 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-03-18 12:14:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2022-03-18 12:14:51,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-03-18 12:14:51,390 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:51,390 INFO L500 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:51,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-03-18 12:14:51,603 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:51,603 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:51,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1216535172, now seen corresponding path program 81 times [2022-03-18 12:14:51,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:51,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994535755] [2022-03-18 12:14:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:51,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 12:14:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:14:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:14:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:14:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:14:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:14:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:14:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:14:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:14:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:14:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:14:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:14:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:14:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:14:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:14:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:14:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:14:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:14:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:14:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:14:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:14:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:14:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:14:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:14:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:14:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:14:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:14:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:14:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:14:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:14:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:14:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:14:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:14:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-03-18 12:14:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-18 12:14:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-03-18 12:14:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-18 12:14:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-03-18 12:14:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-18 12:14:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-03-18 12:14:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-18 12:14:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2503 proven. 982 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-03-18 12:14:53,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:53,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994535755] [2022-03-18 12:14:53,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994535755] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:53,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698489144] [2022-03-18 12:14:53,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:14:53,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:53,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:53,199 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:53,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-18 12:14:53,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2022-03-18 12:14:53,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:14:53,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 86 conjunts are in the unsatisfiable core [2022-03-18 12:14:53,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-03-18 12:14:56,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:14:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-03-18 12:14:56,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698489144] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:14:56,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:14:56,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87, 87] total 132 [2022-03-18 12:14:56,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553566382] [2022-03-18 12:14:56,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:14:56,639 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-03-18 12:14:56,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:14:56,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-03-18 12:14:56,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3834, Invalid=13458, Unknown=0, NotChecked=0, Total=17292 [2022-03-18 12:14:56,641 INFO L87 Difference]: Start difference. First operand 344 states and 345 transitions. Second operand has 132 states, 132 states have (on average 1.7045454545454546) internal successors, (225), 131 states have internal predecessors, (225), 85 states have call successors, (87), 3 states have call predecessors, (87), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2022-03-18 12:14:58,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:14:58,493 INFO L93 Difference]: Finished difference Result 479 states and 522 transitions. [2022-03-18 12:14:58,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-18 12:14:58,493 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.7045454545454546) internal successors, (225), 131 states have internal predecessors, (225), 85 states have call successors, (87), 3 states have call predecessors, (87), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) Word has length 341 [2022-03-18 12:14:58,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:14:58,494 INFO L225 Difference]: With dead ends: 479 [2022-03-18 12:14:58,494 INFO L226 Difference]: Without dead ends: 345 [2022-03-18 12:14:58,497 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 721 SyntacticMatches, 1 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12965 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8652, Invalid=38220, Unknown=0, NotChecked=0, Total=46872 [2022-03-18 12:14:58,497 INFO L912 BasicCegarLoop]: 53 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:14:58,497 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 120 Invalid, 2253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:14:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-03-18 12:14:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-03-18 12:14:58,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 258 states have internal predecessors, (259), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-03-18 12:14:58,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2022-03-18 12:14:58,526 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 341 [2022-03-18 12:14:58,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:14:58,526 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2022-03-18 12:14:58,527 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.7045454545454546) internal successors, (225), 131 states have internal predecessors, (225), 85 states have call successors, (87), 3 states have call predecessors, (87), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2022-03-18 12:14:58,527 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2022-03-18 12:14:58,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-03-18 12:14:58,528 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:14:58,528 INFO L500 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:14:58,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-03-18 12:14:58,752 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-03-18 12:14:58,752 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:14:58,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:14:58,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1063866188, now seen corresponding path program 82 times [2022-03-18 12:14:58,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:14:58,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371918117] [2022-03-18 12:14:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:14:58,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:14:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:14:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 12:14:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:14:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:14:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:14:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:14:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:14:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:14:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:14:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:14:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:14:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:14:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:14:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:14:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:14:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:14:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:14:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:14:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:14:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:14:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:14:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:14:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:14:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:14:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:14:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:14:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:14:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:14:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:14:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:14:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:14:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:14:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:14:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:14:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:14:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-03-18 12:14:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-18 12:14:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-03-18 12:14:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-18 12:14:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-03-18 12:14:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-18 12:14:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-03-18 12:14:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:14:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-03-18 12:14:59,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:14:59,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371918117] [2022-03-18 12:14:59,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371918117] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:14:59,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469020229] [2022-03-18 12:14:59,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:14:59,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:14:59,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:14:59,438 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:14:59,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-18 12:14:59,555 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:14:59,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:14:59,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 87 conjunts are in the unsatisfiable core [2022-03-18 12:14:59,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:14:59,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-03-18 12:14:59,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-03-18 12:15:00,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469020229] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:00,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:00,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 51 [2022-03-18 12:15:00,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521570739] [2022-03-18 12:15:00,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:00,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-18 12:15:00,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:00,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-18 12:15:00,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=1545, Unknown=0, NotChecked=0, Total=2550 [2022-03-18 12:15:00,101 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand has 51 states, 51 states have (on average 2.764705882352941) internal successors, (141), 48 states have internal predecessors, (141), 43 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-03-18 12:15:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:01,125 INFO L93 Difference]: Finished difference Result 358 states and 360 transitions. [2022-03-18 12:15:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-18 12:15:01,125 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.764705882352941) internal successors, (141), 48 states have internal predecessors, (141), 43 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 342 [2022-03-18 12:15:01,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:01,126 INFO L225 Difference]: With dead ends: 358 [2022-03-18 12:15:01,126 INFO L226 Difference]: Without dead ends: 356 [2022-03-18 12:15:01,128 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 805 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3007, Invalid=6499, Unknown=0, NotChecked=0, Total=9506 [2022-03-18 12:15:01,128 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 119 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:01,128 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 40 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:15:01,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-03-18 12:15:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 352. [2022-03-18 12:15:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 263 states have internal predecessors, (264), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 12:15:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2022-03-18 12:15:01,160 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 342 [2022-03-18 12:15:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:01,160 INFO L478 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2022-03-18 12:15:01,160 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.764705882352941) internal successors, (141), 48 states have internal predecessors, (141), 43 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-03-18 12:15:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2022-03-18 12:15:01,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-03-18 12:15:01,162 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:01,162 INFO L500 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:01,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-18 12:15:01,379 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:01,379 INFO L403 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:15:01,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:15:01,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1752414118, now seen corresponding path program 83 times [2022-03-18 12:15:01,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:15:01,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931422160] [2022-03-18 12:15:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:15:01,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:15:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:15:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 12:15:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:15:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:15:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:15:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:15:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:15:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:15:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:15:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:15:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:15:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:15:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:15:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:15:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:15:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:15:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:15:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:15:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:15:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:15:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:15:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:15:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:15:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:15:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:15:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:15:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:15:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:15:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:15:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:15:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:15:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:15:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:15:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:15:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:15:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-03-18 12:15:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-18 12:15:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-03-18 12:15:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-18 12:15:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-03-18 12:15:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-18 12:15:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-03-18 12:15:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-18 12:15:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2627 proven. 1027 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-03-18 12:15:03,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:15:03,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931422160] [2022-03-18 12:15:03,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931422160] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:15:03,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419482795] [2022-03-18 12:15:03,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:15:03,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:03,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:15:03,345 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:15:03,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-18 12:15:03,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2022-03-18 12:15:03,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:15:03,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 88 conjunts are in the unsatisfiable core [2022-03-18 12:15:03,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:15:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-03-18 12:15:06,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-03-18 12:15:06,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419482795] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:06,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:06,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89, 89] total 135 [2022-03-18 12:15:06,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052794329] [2022-03-18 12:15:06,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:06,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2022-03-18 12:15:06,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:06,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2022-03-18 12:15:06,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4011, Invalid=14079, Unknown=0, NotChecked=0, Total=18090 [2022-03-18 12:15:06,525 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand has 135 states, 135 states have (on average 1.7037037037037037) internal successors, (230), 134 states have internal predecessors, (230), 87 states have call successors, (89), 3 states have call predecessors, (89), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-03-18 12:15:08,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:08,268 INFO L93 Difference]: Finished difference Result 490 states and 534 transitions. [2022-03-18 12:15:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-18 12:15:08,269 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 1.7037037037037037) internal successors, (230), 134 states have internal predecessors, (230), 87 states have call successors, (89), 3 states have call predecessors, (89), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Word has length 349 [2022-03-18 12:15:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:08,270 INFO L225 Difference]: With dead ends: 490 [2022-03-18 12:15:08,270 INFO L226 Difference]: Without dead ends: 353 [2022-03-18 12:15:08,274 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 738 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13575 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=9051, Invalid=40011, Unknown=0, NotChecked=0, Total=49062 [2022-03-18 12:15:08,274 INFO L912 BasicCegarLoop]: 54 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:08,274 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 96 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:15:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-03-18 12:15:08,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2022-03-18 12:15:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 263 states have (on average 1.0076045627376427) internal successors, (265), 264 states have internal predecessors, (265), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 12:15:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2022-03-18 12:15:08,306 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 349 [2022-03-18 12:15:08,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:08,306 INFO L478 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2022-03-18 12:15:08,306 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 1.7037037037037037) internal successors, (230), 134 states have internal predecessors, (230), 87 states have call successors, (89), 3 states have call predecessors, (89), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-03-18 12:15:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2022-03-18 12:15:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-03-18 12:15:08,308 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:08,308 INFO L500 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:08,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-18 12:15:08,526 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:08,526 INFO L403 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:15:08,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:15:08,527 INFO L85 PathProgramCache]: Analyzing trace with hash -249764754, now seen corresponding path program 84 times [2022-03-18 12:15:08,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:15:08,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87572127] [2022-03-18 12:15:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:15:08,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:15:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:15:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 12:15:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:15:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:15:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:15:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:15:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:15:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:15:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:15:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:15:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:15:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:15:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:15:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:15:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:15:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:15:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:15:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:15:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:15:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:15:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:15:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:15:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:15:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:15:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:15:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:15:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:15:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:15:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:15:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:15:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:15:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:15:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:15:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:15:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:15:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:15:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-03-18 12:15:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-18 12:15:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-03-18 12:15:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-18 12:15:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-03-18 12:15:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-18 12:15:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-03-18 12:15:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-03-18 12:15:09,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:15:09,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87572127] [2022-03-18 12:15:09,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87572127] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:15:09,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959603746] [2022-03-18 12:15:09,384 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:15:09,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:09,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:15:09,385 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:15:09,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-18 12:15:09,542 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2022-03-18 12:15:09,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:15:09,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 89 conjunts are in the unsatisfiable core [2022-03-18 12:15:09,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:15:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-03-18 12:15:09,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-03-18 12:15:10,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959603746] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:10,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:10,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 52 [2022-03-18 12:15:10,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346886953] [2022-03-18 12:15:10,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:10,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-18 12:15:10,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:10,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-18 12:15:10,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1050, Invalid=1602, Unknown=0, NotChecked=0, Total=2652 [2022-03-18 12:15:10,101 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand has 52 states, 52 states have (on average 2.769230769230769) internal successors, (144), 49 states have internal predecessors, (144), 44 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-03-18 12:15:10,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:10,738 INFO L93 Difference]: Finished difference Result 366 states and 368 transitions. [2022-03-18 12:15:10,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-18 12:15:10,739 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.769230769230769) internal successors, (144), 49 states have internal predecessors, (144), 44 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 350 [2022-03-18 12:15:10,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:10,740 INFO L225 Difference]: With dead ends: 366 [2022-03-18 12:15:10,740 INFO L226 Difference]: Without dead ends: 364 [2022-03-18 12:15:10,741 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 824 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3142, Invalid=6758, Unknown=0, NotChecked=0, Total=9900 [2022-03-18 12:15:10,741 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 116 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:10,741 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 70 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:15:10,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-03-18 12:15:10,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 360. [2022-03-18 12:15:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 268 states have (on average 1.007462686567164) internal successors, (270), 269 states have internal predecessors, (270), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-03-18 12:15:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2022-03-18 12:15:10,772 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 350 [2022-03-18 12:15:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:10,772 INFO L478 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2022-03-18 12:15:10,773 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.769230769230769) internal successors, (144), 49 states have internal predecessors, (144), 44 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-03-18 12:15:10,773 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2022-03-18 12:15:10,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-03-18 12:15:10,774 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:10,774 INFO L500 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:10,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-18 12:15:10,988 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:10,988 INFO L403 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:15:10,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:15:10,989 INFO L85 PathProgramCache]: Analyzing trace with hash -765036476, now seen corresponding path program 85 times [2022-03-18 12:15:10,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:15:10,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279669626] [2022-03-18 12:15:10,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:15:10,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:15:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:15:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 12:15:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:15:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:15:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:15:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:15:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:15:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:15:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:15:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:15:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:15:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:15:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:15:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:15:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:15:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:15:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:15:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:15:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:15:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:15:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:15:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:15:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:15:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:15:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:15:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:15:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:15:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:15:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:15:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:15:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:15:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:15:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:15:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:15:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:15:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:15:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-03-18 12:15:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-18 12:15:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-03-18 12:15:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-18 12:15:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-03-18 12:15:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-18 12:15:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-03-18 12:15:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-18 12:15:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2754 proven. 1073 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-03-18 12:15:12,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:15:12,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279669626] [2022-03-18 12:15:12,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279669626] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:15:12,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299500970] [2022-03-18 12:15:12,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:15:12,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:12,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:15:12,299 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:15:12,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-18 12:15:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:12,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 90 conjunts are in the unsatisfiable core [2022-03-18 12:15:12,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:15:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-03-18 12:15:14,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-03-18 12:15:14,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299500970] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:14,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:14,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91, 91] total 138 [2022-03-18 12:15:14,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032378710] [2022-03-18 12:15:14,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:14,531 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2022-03-18 12:15:14,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:14,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2022-03-18 12:15:14,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4192, Invalid=14714, Unknown=0, NotChecked=0, Total=18906 [2022-03-18 12:15:14,533 INFO L87 Difference]: Start difference. First operand 360 states and 361 transitions. Second operand has 138 states, 138 states have (on average 1.7028985507246377) internal successors, (235), 137 states have internal predecessors, (235), 89 states have call successors, (91), 3 states have call predecessors, (91), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2022-03-18 12:15:16,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:16,405 INFO L93 Difference]: Finished difference Result 501 states and 546 transitions. [2022-03-18 12:15:16,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-18 12:15:16,406 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 138 states have (on average 1.7028985507246377) internal successors, (235), 137 states have internal predecessors, (235), 89 states have call successors, (91), 3 states have call predecessors, (91), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) Word has length 357 [2022-03-18 12:15:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:16,407 INFO L225 Difference]: With dead ends: 501 [2022-03-18 12:15:16,407 INFO L226 Difference]: Without dead ends: 361 [2022-03-18 12:15:16,410 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 755 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14199 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=9459, Invalid=41843, Unknown=0, NotChecked=0, Total=51302 [2022-03-18 12:15:16,411 INFO L912 BasicCegarLoop]: 55 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:16,411 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 92 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:15:16,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-03-18 12:15:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2022-03-18 12:15:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 269 states have (on average 1.0074349442379182) internal successors, (271), 270 states have internal predecessors, (271), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-03-18 12:15:16,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2022-03-18 12:15:16,444 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 357 [2022-03-18 12:15:16,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:16,444 INFO L478 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2022-03-18 12:15:16,445 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 138 states have (on average 1.7028985507246377) internal successors, (235), 137 states have internal predecessors, (235), 89 states have call successors, (91), 3 states have call predecessors, (91), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2022-03-18 12:15:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2022-03-18 12:15:16,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-03-18 12:15:16,446 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:16,446 INFO L500 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:16,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-03-18 12:15:16,663 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:16,664 INFO L403 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:15:16,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:15:16,664 INFO L85 PathProgramCache]: Analyzing trace with hash 983194892, now seen corresponding path program 86 times [2022-03-18 12:15:16,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:15:16,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095356918] [2022-03-18 12:15:16,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:15:16,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:15:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:15:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 12:15:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:15:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:15:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:15:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:15:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:15:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:15:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:15:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:15:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:15:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:15:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:15:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:15:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:15:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:15:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:15:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:15:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:15:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:15:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:15:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:15:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:15:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:15:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:15:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:15:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:15:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:15:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:15:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:15:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:15:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:15:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:15:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:15:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:15:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:15:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:15:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-03-18 12:15:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-18 12:15:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-03-18 12:15:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-18 12:15:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-03-18 12:15:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-18 12:15:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-03-18 12:15:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1032 proven. 2839 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-03-18 12:15:17,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:15:17,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095356918] [2022-03-18 12:15:17,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095356918] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:15:17,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77098000] [2022-03-18 12:15:17,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:15:17,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:17,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:15:17,216 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:15:17,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-18 12:15:17,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:15:17,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:15:17,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 91 conjunts are in the unsatisfiable core [2022-03-18 12:15:17,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:15:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-03-18 12:15:17,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-03-18 12:15:18,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77098000] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:18,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:18,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 53 [2022-03-18 12:15:18,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794578683] [2022-03-18 12:15:18,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:18,186 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-18 12:15:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-18 12:15:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1096, Invalid=1660, Unknown=0, NotChecked=0, Total=2756 [2022-03-18 12:15:18,187 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand has 53 states, 53 states have (on average 2.7735849056603774) internal successors, (147), 50 states have internal predecessors, (147), 45 states have call successors, (48), 4 states have call predecessors, (48), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 12:15:19,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:19,137 INFO L93 Difference]: Finished difference Result 374 states and 376 transitions. [2022-03-18 12:15:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-18 12:15:19,138 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.7735849056603774) internal successors, (147), 50 states have internal predecessors, (147), 45 states have call successors, (48), 4 states have call predecessors, (48), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 358 [2022-03-18 12:15:19,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:19,139 INFO L225 Difference]: With dead ends: 374 [2022-03-18 12:15:19,139 INFO L226 Difference]: Without dead ends: 372 [2022-03-18 12:15:19,140 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 843 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1878 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=3280, Invalid=7022, Unknown=0, NotChecked=0, Total=10302 [2022-03-18 12:15:19,140 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 121 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:19,140 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 55 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:15:19,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-03-18 12:15:19,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 368. [2022-03-18 12:15:19,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 274 states have (on average 1.0072992700729928) internal successors, (276), 275 states have internal predecessors, (276), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-03-18 12:15:19,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 369 transitions. [2022-03-18 12:15:19,173 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 369 transitions. Word has length 358 [2022-03-18 12:15:19,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:19,173 INFO L478 AbstractCegarLoop]: Abstraction has 368 states and 369 transitions. [2022-03-18 12:15:19,173 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.7735849056603774) internal successors, (147), 50 states have internal predecessors, (147), 45 states have call successors, (48), 4 states have call predecessors, (48), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-03-18 12:15:19,173 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 369 transitions. [2022-03-18 12:15:19,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-03-18 12:15:19,174 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:19,174 INFO L500 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:19,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-03-18 12:15:19,392 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:19,392 INFO L403 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:15:19,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:15:19,392 INFO L85 PathProgramCache]: Analyzing trace with hash -62148122, now seen corresponding path program 87 times [2022-03-18 12:15:19,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:15:19,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561777846] [2022-03-18 12:15:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:15:19,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:15:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:15:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-03-18 12:15:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:15:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:15:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:15:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:15:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:15:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:15:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:15:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:15:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:15:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:15:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:15:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:15:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:15:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:15:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:15:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:15:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:15:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:15:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:15:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:15:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:15:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:15:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:15:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:15:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:15:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:15:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:15:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:15:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:15:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:15:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:15:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:15:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:15:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:15:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:15:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-03-18 12:15:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-18 12:15:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-03-18 12:15:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-18 12:15:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-03-18 12:15:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-18 12:15:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-03-18 12:15:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-18 12:15:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 2884 proven. 1120 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-03-18 12:15:20,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:15:20,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561777846] [2022-03-18 12:15:20,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561777846] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:15:20,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322257037] [2022-03-18 12:15:20,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:15:20,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:20,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:15:20,712 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:15:20,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-18 12:15:20,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2022-03-18 12:15:20,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:15:20,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 92 conjunts are in the unsatisfiable core [2022-03-18 12:15:20,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:15:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-03-18 12:15:22,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-03-18 12:15:23,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322257037] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:23,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:23,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93, 93] total 141 [2022-03-18 12:15:23,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183413988] [2022-03-18 12:15:23,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:23,181 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-03-18 12:15:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-03-18 12:15:23,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4377, Invalid=15363, Unknown=0, NotChecked=0, Total=19740 [2022-03-18 12:15:23,182 INFO L87 Difference]: Start difference. First operand 368 states and 369 transitions. Second operand has 141 states, 141 states have (on average 1.702127659574468) internal successors, (240), 140 states have internal predecessors, (240), 91 states have call successors, (93), 3 states have call predecessors, (93), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2022-03-18 12:15:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:25,429 INFO L93 Difference]: Finished difference Result 512 states and 558 transitions. [2022-03-18 12:15:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-03-18 12:15:25,429 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 1.702127659574468) internal successors, (240), 140 states have internal predecessors, (240), 91 states have call successors, (93), 3 states have call predecessors, (93), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) Word has length 365 [2022-03-18 12:15:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:25,430 INFO L225 Difference]: With dead ends: 512 [2022-03-18 12:15:25,430 INFO L226 Difference]: Without dead ends: 369 [2022-03-18 12:15:25,443 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1003 GetRequests, 772 SyntacticMatches, 1 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14837 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9876, Invalid=43716, Unknown=0, NotChecked=0, Total=53592 [2022-03-18 12:15:25,444 INFO L912 BasicCegarLoop]: 56 mSDtfsCounter, 21 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:25,444 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 138 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 12:15:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-03-18 12:15:25,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2022-03-18 12:15:25,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 275 states have (on average 1.0072727272727273) internal successors, (277), 276 states have internal predecessors, (277), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-03-18 12:15:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2022-03-18 12:15:25,495 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 365 [2022-03-18 12:15:25,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:25,495 INFO L478 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2022-03-18 12:15:25,496 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 1.702127659574468) internal successors, (240), 140 states have internal predecessors, (240), 91 states have call successors, (93), 3 states have call predecessors, (93), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2022-03-18 12:15:25,496 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2022-03-18 12:15:25,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-03-18 12:15:25,497 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:25,497 INFO L500 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:25,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-03-18 12:15:25,697 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-03-18 12:15:25,698 INFO L403 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:15:25,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:15:25,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1238519470, now seen corresponding path program 88 times [2022-03-18 12:15:25,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:15:25,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058385899] [2022-03-18 12:15:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:15:25,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:15:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:15:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 12:15:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:15:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:15:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:15:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:15:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:15:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:15:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:15:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:15:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:15:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:15:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:15:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:15:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:15:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:15:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:15:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:15:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:15:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:15:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:15:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:15:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:15:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:15:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:15:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:15:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:15:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:15:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:15:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:15:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:15:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:15:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:15:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:15:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:15:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:15:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:15:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:15:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-03-18 12:15:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-18 12:15:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-03-18 12:15:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-18 12:15:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-03-18 12:15:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-18 12:15:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-03-18 12:15:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1078 proven. 2971 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-03-18 12:15:26,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:15:26,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058385899] [2022-03-18 12:15:26,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058385899] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:15:26,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865527408] [2022-03-18 12:15:26,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:15:26,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:26,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:15:26,282 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:15:26,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-18 12:15:26,401 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:15:26,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:15:26,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 93 conjunts are in the unsatisfiable core [2022-03-18 12:15:26,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:15:26,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-03-18 12:15:26,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-03-18 12:15:27,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865527408] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:27,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:27,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 54 [2022-03-18 12:15:27,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122258230] [2022-03-18 12:15:27,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:27,265 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-18 12:15:27,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:27,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-18 12:15:27,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1143, Invalid=1719, Unknown=0, NotChecked=0, Total=2862 [2022-03-18 12:15:27,265 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand has 54 states, 54 states have (on average 2.7777777777777777) internal successors, (150), 51 states have internal predecessors, (150), 46 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-03-18 12:15:28,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:28,198 INFO L93 Difference]: Finished difference Result 382 states and 384 transitions. [2022-03-18 12:15:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-18 12:15:28,198 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.7777777777777777) internal successors, (150), 51 states have internal predecessors, (150), 46 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 366 [2022-03-18 12:15:28,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:28,200 INFO L225 Difference]: With dead ends: 382 [2022-03-18 12:15:28,200 INFO L226 Difference]: Without dead ends: 380 [2022-03-18 12:15:28,201 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 862 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1943 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3421, Invalid=7291, Unknown=0, NotChecked=0, Total=10712 [2022-03-18 12:15:28,201 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 123 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:28,201 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 70 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:15:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-03-18 12:15:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2022-03-18 12:15:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 281 states have internal predecessors, (282), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-03-18 12:15:28,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2022-03-18 12:15:28,234 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 366 [2022-03-18 12:15:28,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:28,234 INFO L478 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2022-03-18 12:15:28,234 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.7777777777777777) internal successors, (150), 51 states have internal predecessors, (150), 46 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-03-18 12:15:28,234 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2022-03-18 12:15:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-03-18 12:15:28,236 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:28,236 INFO L500 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:28,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-18 12:15:28,453 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-03-18 12:15:28,453 INFO L403 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:15:28,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:15:28,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1760626180, now seen corresponding path program 89 times [2022-03-18 12:15:28,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:15:28,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407961279] [2022-03-18 12:15:28,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:15:28,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:15:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:15:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-03-18 12:15:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:15:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:15:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:15:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:15:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:15:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:15:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:15:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:15:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:15:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:15:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:15:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:15:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:15:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:15:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:15:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:15:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:15:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:15:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:15:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:15:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:15:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:15:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:15:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:15:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:15:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:15:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:15:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:15:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:15:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:15:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:15:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:15:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:15:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:15:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:15:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:15:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-03-18 12:15:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-18 12:15:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-03-18 12:15:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-18 12:15:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-03-18 12:15:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-18 12:15:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-03-18 12:15:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-18 12:15:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3017 proven. 1168 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-03-18 12:15:30,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:15:30,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407961279] [2022-03-18 12:15:30,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407961279] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:15:30,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508734653] [2022-03-18 12:15:30,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:15:30,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:30,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:15:30,516 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:15:30,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-18 12:15:30,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2022-03-18 12:15:30,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:15:30,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 94 conjunts are in the unsatisfiable core [2022-03-18 12:15:30,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:15:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-03-18 12:15:33,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-03-18 12:15:33,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508734653] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:33,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:33,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95, 95] total 144 [2022-03-18 12:15:33,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729735936] [2022-03-18 12:15:33,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:33,710 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2022-03-18 12:15:33,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:33,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2022-03-18 12:15:33,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4566, Invalid=16026, Unknown=0, NotChecked=0, Total=20592 [2022-03-18 12:15:33,712 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 144 states, 144 states have (on average 1.7013888888888888) internal successors, (245), 143 states have internal predecessors, (245), 93 states have call successors, (95), 3 states have call predecessors, (95), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2022-03-18 12:15:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:36,191 INFO L93 Difference]: Finished difference Result 523 states and 570 transitions. [2022-03-18 12:15:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-18 12:15:36,192 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 1.7013888888888888) internal successors, (245), 143 states have internal predecessors, (245), 93 states have call successors, (95), 3 states have call predecessors, (95), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Word has length 373 [2022-03-18 12:15:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:36,193 INFO L225 Difference]: With dead ends: 523 [2022-03-18 12:15:36,193 INFO L226 Difference]: Without dead ends: 377 [2022-03-18 12:15:36,198 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 789 SyntacticMatches, 1 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15489 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=10302, Invalid=45630, Unknown=0, NotChecked=0, Total=55932 [2022-03-18 12:15:36,198 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:36,198 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 109 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 12:15:36,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-03-18 12:15:36,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-03-18 12:15:36,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 281 states have (on average 1.00711743772242) internal successors, (283), 282 states have internal predecessors, (283), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-03-18 12:15:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2022-03-18 12:15:36,248 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 373 [2022-03-18 12:15:36,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:36,248 INFO L478 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2022-03-18 12:15:36,249 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 1.7013888888888888) internal successors, (245), 143 states have internal predecessors, (245), 93 states have call successors, (95), 3 states have call predecessors, (95), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2022-03-18 12:15:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2022-03-18 12:15:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-03-18 12:15:36,250 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:36,250 INFO L500 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:36,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-03-18 12:15:36,459 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:36,460 INFO L403 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:15:36,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:15:36,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1502763724, now seen corresponding path program 90 times [2022-03-18 12:15:36,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:15:36,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190246628] [2022-03-18 12:15:36,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:15:36,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:15:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:15:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:15:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:15:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:15:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:15:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:15:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:15:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:15:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:15:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:15:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:15:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:15:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:15:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:15:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:15:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:15:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:15:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:15:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:15:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:15:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:15:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:15:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:15:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:15:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:15:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:15:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:15:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:15:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:15:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:15:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:15:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:15:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:15:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:15:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:15:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:15:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:15:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:15:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:15:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-03-18 12:15:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-18 12:15:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-03-18 12:15:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-18 12:15:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-03-18 12:15:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-18 12:15:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-03-18 12:15:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1125 proven. 3106 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-03-18 12:15:37,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:15:37,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190246628] [2022-03-18 12:15:37,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190246628] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:15:37,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615258518] [2022-03-18 12:15:37,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:15:37,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:37,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:15:37,355 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:15:37,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-18 12:15:37,567 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2022-03-18 12:15:37,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:15:37,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 95 conjunts are in the unsatisfiable core [2022-03-18 12:15:37,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:15:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-03-18 12:15:38,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-03-18 12:15:38,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615258518] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:38,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:38,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 55 [2022-03-18 12:15:38,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66059550] [2022-03-18 12:15:38,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:38,679 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-18 12:15:38,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:38,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-18 12:15:38,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=1779, Unknown=0, NotChecked=0, Total=2970 [2022-03-18 12:15:38,680 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand has 55 states, 55 states have (on average 2.7818181818181817) internal successors, (153), 52 states have internal predecessors, (153), 47 states have call successors, (50), 4 states have call predecessors, (50), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-03-18 12:15:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:39,556 INFO L93 Difference]: Finished difference Result 390 states and 392 transitions. [2022-03-18 12:15:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-18 12:15:39,556 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.7818181818181817) internal successors, (153), 52 states have internal predecessors, (153), 47 states have call successors, (50), 4 states have call predecessors, (50), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 374 [2022-03-18 12:15:39,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:39,557 INFO L225 Difference]: With dead ends: 390 [2022-03-18 12:15:39,557 INFO L226 Difference]: Without dead ends: 388 [2022-03-18 12:15:39,558 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 881 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3565, Invalid=7565, Unknown=0, NotChecked=0, Total=11130 [2022-03-18 12:15:39,558 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 128 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:39,558 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 45 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:15:39,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-03-18 12:15:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 384. [2022-03-18 12:15:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 286 states have (on average 1.006993006993007) internal successors, (288), 287 states have internal predecessors, (288), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-03-18 12:15:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2022-03-18 12:15:39,593 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 374 [2022-03-18 12:15:39,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:39,593 INFO L478 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2022-03-18 12:15:39,593 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.7818181818181817) internal successors, (153), 52 states have internal predecessors, (153), 47 states have call successors, (50), 4 states have call predecessors, (50), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-03-18 12:15:39,593 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2022-03-18 12:15:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-03-18 12:15:39,594 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:39,595 INFO L500 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:39,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-03-18 12:15:39,807 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:39,807 INFO L403 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:15:39,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:15:39,808 INFO L85 PathProgramCache]: Analyzing trace with hash -609305562, now seen corresponding path program 91 times [2022-03-18 12:15:39,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:15:39,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673579430] [2022-03-18 12:15:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:15:39,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:15:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:15:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-03-18 12:15:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:15:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:15:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:15:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:15:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:15:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:15:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:15:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:15:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:15:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:15:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:15:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:15:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:15:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:15:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:15:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:15:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:15:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:15:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:15:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:15:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:15:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:15:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:15:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:15:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:15:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:15:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:15:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:15:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:15:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:15:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:15:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:15:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:15:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:15:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:15:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:15:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:15:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-03-18 12:15:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-18 12:15:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-03-18 12:15:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-18 12:15:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-03-18 12:15:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-18 12:15:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-03-18 12:15:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-18 12:15:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3153 proven. 1217 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-03-18 12:15:41,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:15:41,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673579430] [2022-03-18 12:15:41,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673579430] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:15:41,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125254111] [2022-03-18 12:15:41,264 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:15:41,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:41,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:15:41,265 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:15:41,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-18 12:15:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:41,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 96 conjunts are in the unsatisfiable core [2022-03-18 12:15:41,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:15:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-03-18 12:15:43,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-03-18 12:15:43,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125254111] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:43,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:43,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97, 97] total 147 [2022-03-18 12:15:43,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515868132] [2022-03-18 12:15:43,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:43,793 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-03-18 12:15:43,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:43,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-03-18 12:15:43,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4759, Invalid=16703, Unknown=0, NotChecked=0, Total=21462 [2022-03-18 12:15:43,796 INFO L87 Difference]: Start difference. First operand 384 states and 385 transitions. Second operand has 147 states, 147 states have (on average 1.7006802721088434) internal successors, (250), 146 states have internal predecessors, (250), 95 states have call successors, (97), 3 states have call predecessors, (97), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2022-03-18 12:15:46,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:46,138 INFO L93 Difference]: Finished difference Result 534 states and 582 transitions. [2022-03-18 12:15:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-03-18 12:15:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 1.7006802721088434) internal successors, (250), 146 states have internal predecessors, (250), 95 states have call successors, (97), 3 states have call predecessors, (97), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) Word has length 381 [2022-03-18 12:15:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:46,139 INFO L225 Difference]: With dead ends: 534 [2022-03-18 12:15:46,139 INFO L226 Difference]: Without dead ends: 385 [2022-03-18 12:15:46,142 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 806 SyntacticMatches, 1 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16155 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=10737, Invalid=47585, Unknown=0, NotChecked=0, Total=58322 [2022-03-18 12:15:46,142 INFO L912 BasicCegarLoop]: 58 mSDtfsCounter, 21 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2670 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:46,142 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 135 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2670 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 12:15:46,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-03-18 12:15:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2022-03-18 12:15:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 287 states have (on average 1.0069686411149825) internal successors, (289), 288 states have internal predecessors, (289), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-03-18 12:15:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2022-03-18 12:15:46,178 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 381 [2022-03-18 12:15:46,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:46,178 INFO L478 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2022-03-18 12:15:46,178 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 1.7006802721088434) internal successors, (250), 146 states have internal predecessors, (250), 95 states have call successors, (97), 3 states have call predecessors, (97), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2022-03-18 12:15:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2022-03-18 12:15:46,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-03-18 12:15:46,179 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:46,179 INFO L500 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:46,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-03-18 12:15:46,397 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:46,397 INFO L403 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:15:46,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:15:46,397 INFO L85 PathProgramCache]: Analyzing trace with hash -449656594, now seen corresponding path program 92 times [2022-03-18 12:15:46,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:15:46,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948443254] [2022-03-18 12:15:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:15:46,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:15:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:15:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 12:15:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:15:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:15:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:15:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:15:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:15:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:15:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:15:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:15:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:15:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:15:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:15:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:15:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:15:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:15:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:15:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:15:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:15:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:15:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:15:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:15:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:15:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:15:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:15:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:15:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:15:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:15:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:15:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:15:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:15:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:15:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:15:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:15:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:15:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:15:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:15:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:15:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:15:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:15:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-03-18 12:15:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-18 12:15:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-03-18 12:15:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-18 12:15:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-03-18 12:15:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-18 12:15:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-03-18 12:15:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1173 proven. 3244 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-03-18 12:15:47,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:15:47,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948443254] [2022-03-18 12:15:47,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948443254] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:15:47,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222735982] [2022-03-18 12:15:47,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:15:47,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:47,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:15:47,229 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:15:47,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-18 12:15:47,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:15:47,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:15:47,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 97 conjunts are in the unsatisfiable core [2022-03-18 12:15:47,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:15:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-03-18 12:15:47,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-03-18 12:15:48,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222735982] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:48,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:48,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 52] total 56 [2022-03-18 12:15:48,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636326775] [2022-03-18 12:15:48,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:48,020 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-18 12:15:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-18 12:15:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1240, Invalid=1840, Unknown=0, NotChecked=0, Total=3080 [2022-03-18 12:15:48,021 INFO L87 Difference]: Start difference. First operand 385 states and 386 transitions. Second operand has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 53 states have internal predecessors, (156), 48 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-03-18 12:15:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:48,863 INFO L93 Difference]: Finished difference Result 398 states and 400 transitions. [2022-03-18 12:15:48,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-18 12:15:48,863 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 53 states have internal predecessors, (156), 48 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 382 [2022-03-18 12:15:48,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:48,864 INFO L225 Difference]: With dead ends: 398 [2022-03-18 12:15:48,864 INFO L226 Difference]: Without dead ends: 396 [2022-03-18 12:15:48,865 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 900 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3712, Invalid=7844, Unknown=0, NotChecked=0, Total=11556 [2022-03-18 12:15:48,865 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 128 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:48,865 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 60 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:15:48,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-03-18 12:15:48,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 392. [2022-03-18 12:15:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 293 states have internal predecessors, (294), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-03-18 12:15:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2022-03-18 12:15:48,903 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 382 [2022-03-18 12:15:48,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:48,903 INFO L478 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2022-03-18 12:15:48,903 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 53 states have internal predecessors, (156), 48 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-03-18 12:15:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2022-03-18 12:15:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-03-18 12:15:48,905 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:48,905 INFO L500 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:48,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-03-18 12:15:49,122 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:49,123 INFO L403 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:15:49,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:15:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1992391740, now seen corresponding path program 93 times [2022-03-18 12:15:49,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:15:49,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607246806] [2022-03-18 12:15:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:15:49,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:15:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:15:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 12:15:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:15:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:15:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:15:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:15:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:15:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:15:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:15:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:15:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:15:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:15:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:15:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:15:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:15:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:15:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:15:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:15:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:15:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:15:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:15:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:15:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:15:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:15:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:15:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:15:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:15:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:15:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:15:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:15:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:15:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:15:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:15:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:15:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:15:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:15:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:15:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:15:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:15:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:15:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-03-18 12:15:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-18 12:15:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-03-18 12:15:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-18 12:15:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-03-18 12:15:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-18 12:15:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-03-18 12:15:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-18 12:15:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3292 proven. 1267 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-03-18 12:15:50,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:15:50,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607246806] [2022-03-18 12:15:50,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607246806] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:15:50,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555043017] [2022-03-18 12:15:50,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:15:50,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:50,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:15:50,826 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:15:50,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-18 12:15:51,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2022-03-18 12:15:51,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:15:51,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 98 conjunts are in the unsatisfiable core [2022-03-18 12:15:51,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:15:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-03-18 12:15:53,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:54,047 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-03-18 12:15:54,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555043017] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:54,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:54,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99, 99] total 150 [2022-03-18 12:15:54,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034075949] [2022-03-18 12:15:54,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:54,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2022-03-18 12:15:54,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:54,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2022-03-18 12:15:54,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4956, Invalid=17394, Unknown=0, NotChecked=0, Total=22350 [2022-03-18 12:15:54,051 INFO L87 Difference]: Start difference. First operand 392 states and 393 transitions. Second operand has 150 states, 150 states have (on average 1.7) internal successors, (255), 149 states have internal predecessors, (255), 97 states have call successors, (99), 3 states have call predecessors, (99), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2022-03-18 12:15:57,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:57,119 INFO L93 Difference]: Finished difference Result 545 states and 594 transitions. [2022-03-18 12:15:57,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-18 12:15:57,120 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 1.7) internal successors, (255), 149 states have internal predecessors, (255), 97 states have call successors, (99), 3 states have call predecessors, (99), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) Word has length 389 [2022-03-18 12:15:57,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:57,121 INFO L225 Difference]: With dead ends: 545 [2022-03-18 12:15:57,121 INFO L226 Difference]: Without dead ends: 393 [2022-03-18 12:15:57,125 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 823 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16835 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=11181, Invalid=49581, Unknown=0, NotChecked=0, Total=60762 [2022-03-18 12:15:57,125 INFO L912 BasicCegarLoop]: 59 mSDtfsCounter, 21 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 3337 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 3337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:57,125 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 141 Invalid, 3540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 3337 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 12:15:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-03-18 12:15:57,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-03-18 12:15:57,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 293 states have (on average 1.006825938566553) internal successors, (295), 294 states have internal predecessors, (295), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-03-18 12:15:57,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2022-03-18 12:15:57,163 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 389 [2022-03-18 12:15:57,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:57,163 INFO L478 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2022-03-18 12:15:57,164 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 1.7) internal successors, (255), 149 states have internal predecessors, (255), 97 states have call successors, (99), 3 states have call predecessors, (99), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2022-03-18 12:15:57,164 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2022-03-18 12:15:57,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-03-18 12:15:57,165 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:57,165 INFO L500 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:57,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-18 12:15:57,379 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:57,380 INFO L403 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:15:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:15:57,380 INFO L85 PathProgramCache]: Analyzing trace with hash -647149428, now seen corresponding path program 94 times [2022-03-18 12:15:57,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:15:57,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676765013] [2022-03-18 12:15:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:15:57,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:15:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:15:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:15:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:15:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:15:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:15:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:15:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:15:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:15:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:15:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:15:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:15:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:15:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:15:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:15:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:15:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:15:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:15:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:15:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:15:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:15:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:15:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:15:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:15:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:15:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:15:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:15:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:15:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:15:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:15:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:15:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:15:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:15:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:15:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-03-18 12:15:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-18 12:15:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-03-18 12:15:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-18 12:15:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-03-18 12:15:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-18 12:15:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-03-18 12:15:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-18 12:15:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-03-18 12:15:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-18 12:15:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-03-18 12:15:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-18 12:15:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-03-18 12:15:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-18 12:15:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-03-18 12:15:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:15:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1222 proven. 3385 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-03-18 12:15:58,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:15:58,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676765013] [2022-03-18 12:15:58,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676765013] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:15:58,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629819128] [2022-03-18 12:15:58,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:15:58,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:15:58,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:15:58,072 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:15:58,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-18 12:15:58,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:15:58,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:15:58,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 99 conjunts are in the unsatisfiable core [2022-03-18 12:15:58,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:15:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-03-18 12:15:58,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:15:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-03-18 12:15:58,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629819128] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:15:58,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:15:58,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 57 [2022-03-18 12:15:58,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881304734] [2022-03-18 12:15:58,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:15:58,911 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-18 12:15:58,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:15:58,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-18 12:15:58,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1290, Invalid=1902, Unknown=0, NotChecked=0, Total=3192 [2022-03-18 12:15:58,914 INFO L87 Difference]: Start difference. First operand 393 states and 394 transitions. Second operand has 57 states, 57 states have (on average 2.789473684210526) internal successors, (159), 54 states have internal predecessors, (159), 49 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-03-18 12:15:59,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:15:59,740 INFO L93 Difference]: Finished difference Result 406 states and 408 transitions. [2022-03-18 12:15:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-18 12:15:59,740 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.789473684210526) internal successors, (159), 54 states have internal predecessors, (159), 49 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 390 [2022-03-18 12:15:59,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:15:59,742 INFO L225 Difference]: With dead ends: 406 [2022-03-18 12:15:59,742 INFO L226 Difference]: Without dead ends: 404 [2022-03-18 12:15:59,743 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 919 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3862, Invalid=8128, Unknown=0, NotChecked=0, Total=11990 [2022-03-18 12:15:59,743 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 128 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:15:59,743 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 50 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:15:59,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-18 12:15:59,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 400. [2022-03-18 12:15:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 298 states have (on average 1.0067114093959733) internal successors, (300), 299 states have internal predecessors, (300), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-03-18 12:15:59,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 401 transitions. [2022-03-18 12:15:59,801 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 401 transitions. Word has length 390 [2022-03-18 12:15:59,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:15:59,802 INFO L478 AbstractCegarLoop]: Abstraction has 400 states and 401 transitions. [2022-03-18 12:15:59,802 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.789473684210526) internal successors, (159), 54 states have internal predecessors, (159), 49 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-03-18 12:15:59,802 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 401 transitions. [2022-03-18 12:15:59,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-03-18 12:15:59,803 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:15:59,803 INFO L500 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:15:59,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-18 12:16:00,021 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-03-18 12:16:00,022 INFO L403 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:16:00,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:16:00,022 INFO L85 PathProgramCache]: Analyzing trace with hash 302044774, now seen corresponding path program 95 times [2022-03-18 12:16:00,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:16:00,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649363622] [2022-03-18 12:16:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:16:00,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:16:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:16:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 12:16:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:16:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:16:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:16:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:16:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:16:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:16:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:16:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:16:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:16:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:16:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:16:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:16:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:16:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:16:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:16:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:16:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:16:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:16:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:16:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:16:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:16:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:16:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:16:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:16:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:16:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:16:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:16:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:16:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:16:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:16:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:16:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-03-18 12:16:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-18 12:16:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-03-18 12:16:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-18 12:16:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-03-18 12:16:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-18 12:16:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-03-18 12:16:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-18 12:16:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-03-18 12:16:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-18 12:16:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-03-18 12:16:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-18 12:16:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-03-18 12:16:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-18 12:16:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-03-18 12:16:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-18 12:16:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3434 proven. 1318 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-03-18 12:16:01,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:16:01,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649363622] [2022-03-18 12:16:01,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649363622] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:16:01,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219038728] [2022-03-18 12:16:01,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:16:01,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:16:01,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:16:01,834 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:16:01,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-18 12:16:02,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2022-03-18 12:16:02,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:16:02,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 100 conjunts are in the unsatisfiable core [2022-03-18 12:16:02,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:16:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-03-18 12:16:04,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:16:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-03-18 12:16:04,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219038728] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:16:04,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:16:04,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 101] total 153 [2022-03-18 12:16:04,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920626407] [2022-03-18 12:16:04,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:16:04,930 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2022-03-18 12:16:04,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:16:04,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2022-03-18 12:16:04,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5157, Invalid=18099, Unknown=0, NotChecked=0, Total=23256 [2022-03-18 12:16:04,932 INFO L87 Difference]: Start difference. First operand 400 states and 401 transitions. Second operand has 153 states, 153 states have (on average 1.6993464052287581) internal successors, (260), 152 states have internal predecessors, (260), 99 states have call successors, (101), 3 states have call predecessors, (101), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2022-03-18 12:16:07,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:16:07,576 INFO L93 Difference]: Finished difference Result 556 states and 606 transitions. [2022-03-18 12:16:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-18 12:16:07,576 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 153 states have (on average 1.6993464052287581) internal successors, (260), 152 states have internal predecessors, (260), 99 states have call successors, (101), 3 states have call predecessors, (101), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Word has length 397 [2022-03-18 12:16:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:16:07,577 INFO L225 Difference]: With dead ends: 556 [2022-03-18 12:16:07,577 INFO L226 Difference]: Without dead ends: 401 [2022-03-18 12:16:07,582 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1091 GetRequests, 840 SyntacticMatches, 1 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17529 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=11634, Invalid=51618, Unknown=0, NotChecked=0, Total=63252 [2022-03-18 12:16:07,582 INFO L912 BasicCegarLoop]: 60 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:16:07,582 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 117 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 12:16:07,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-03-18 12:16:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-03-18 12:16:07,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 299 states have (on average 1.0066889632107023) internal successors, (301), 300 states have internal predecessors, (301), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-03-18 12:16:07,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2022-03-18 12:16:07,622 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 397 [2022-03-18 12:16:07,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:16:07,622 INFO L478 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2022-03-18 12:16:07,622 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 153 states have (on average 1.6993464052287581) internal successors, (260), 152 states have internal predecessors, (260), 99 states have call successors, (101), 3 states have call predecessors, (101), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2022-03-18 12:16:07,622 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2022-03-18 12:16:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-03-18 12:16:07,624 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:16:07,624 INFO L500 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:16:07,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-03-18 12:16:07,842 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:16:07,842 INFO L403 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:16:07,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:16:07,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1901964498, now seen corresponding path program 96 times [2022-03-18 12:16:07,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:16:07,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135496253] [2022-03-18 12:16:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:16:07,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:16:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:16:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:16:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:16:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:16:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:16:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:16:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:16:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:16:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:16:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:16:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:16:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:16:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:16:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:16:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:16:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:16:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:16:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:16:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:16:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:16:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:16:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:16:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:16:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:16:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:16:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:16:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:16:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:16:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:16:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:16:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:16:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:16:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:16:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:16:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-03-18 12:16:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-18 12:16:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-03-18 12:16:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-18 12:16:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-03-18 12:16:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-18 12:16:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-03-18 12:16:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-18 12:16:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-03-18 12:16:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-18 12:16:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-03-18 12:16:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-18 12:16:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-03-18 12:16:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-18 12:16:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-03-18 12:16:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1272 proven. 3529 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-03-18 12:16:08,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:16:08,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135496253] [2022-03-18 12:16:08,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135496253] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:16:08,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889835617] [2022-03-18 12:16:08,606 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:16:08,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:16:08,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:16:08,608 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:16:08,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-18 12:16:08,794 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2022-03-18 12:16:08,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:16:08,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 101 conjunts are in the unsatisfiable core [2022-03-18 12:16:08,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:16:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-03-18 12:16:09,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:16:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-03-18 12:16:09,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889835617] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:16:09,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:16:09,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 58 [2022-03-18 12:16:09,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340218917] [2022-03-18 12:16:09,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:16:09,503 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-03-18 12:16:09,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:16:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-03-18 12:16:09,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1341, Invalid=1965, Unknown=0, NotChecked=0, Total=3306 [2022-03-18 12:16:09,504 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand has 58 states, 58 states have (on average 2.793103448275862) internal successors, (162), 55 states have internal predecessors, (162), 50 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-03-18 12:16:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:16:10,468 INFO L93 Difference]: Finished difference Result 414 states and 416 transitions. [2022-03-18 12:16:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-18 12:16:10,468 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.793103448275862) internal successors, (162), 55 states have internal predecessors, (162), 50 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 398 [2022-03-18 12:16:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:16:10,470 INFO L225 Difference]: With dead ends: 414 [2022-03-18 12:16:10,470 INFO L226 Difference]: Without dead ends: 412 [2022-03-18 12:16:10,472 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 938 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2213 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=4015, Invalid=8417, Unknown=0, NotChecked=0, Total=12432 [2022-03-18 12:16:10,472 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 125 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:16:10,472 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 60 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:16:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-03-18 12:16:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 408. [2022-03-18 12:16:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 304 states have (on average 1.006578947368421) internal successors, (306), 305 states have internal predecessors, (306), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-03-18 12:16:10,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 409 transitions. [2022-03-18 12:16:10,552 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 409 transitions. Word has length 398 [2022-03-18 12:16:10,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:16:10,552 INFO L478 AbstractCegarLoop]: Abstraction has 408 states and 409 transitions. [2022-03-18 12:16:10,553 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.793103448275862) internal successors, (162), 55 states have internal predecessors, (162), 50 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-03-18 12:16:10,553 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 409 transitions. [2022-03-18 12:16:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-03-18 12:16:10,554 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:16:10,555 INFO L500 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:16:10,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-03-18 12:16:10,767 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:16:10,767 INFO L403 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:16:10,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:16:10,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1888816764, now seen corresponding path program 97 times [2022-03-18 12:16:10,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:16:10,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416187233] [2022-03-18 12:16:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:16:10,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:16:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:16:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 12:16:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:16:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:16:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:16:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:16:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:16:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:16:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:16:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:16:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:16:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:16:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:16:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:16:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:16:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:16:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:16:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:16:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:16:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:16:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:16:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:16:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:16:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:16:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:16:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:16:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:16:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:16:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:16:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:16:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:16:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:16:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:16:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:16:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-03-18 12:16:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-18 12:16:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-03-18 12:16:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-18 12:16:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-03-18 12:16:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-18 12:16:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-03-18 12:16:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-18 12:16:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-03-18 12:16:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-18 12:16:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-03-18 12:16:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-18 12:16:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-03-18 12:16:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-18 12:16:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-03-18 12:16:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-18 12:16:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3579 proven. 1370 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-03-18 12:16:13,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:16:13,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416187233] [2022-03-18 12:16:13,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416187233] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:16:13,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642139765] [2022-03-18 12:16:13,888 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:16:13,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:16:13,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:16:13,889 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:16:13,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-18 12:16:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:14,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 102 conjunts are in the unsatisfiable core [2022-03-18 12:16:14,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:16:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-03-18 12:16:18,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:16:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-03-18 12:16:18,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642139765] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:16:18,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:16:18,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103, 103] total 156 [2022-03-18 12:16:18,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736394411] [2022-03-18 12:16:18,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:16:18,697 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2022-03-18 12:16:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:16:18,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2022-03-18 12:16:18,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5362, Invalid=18818, Unknown=0, NotChecked=0, Total=24180 [2022-03-18 12:16:18,700 INFO L87 Difference]: Start difference. First operand 408 states and 409 transitions. Second operand has 156 states, 156 states have (on average 1.6987179487179487) internal successors, (265), 155 states have internal predecessors, (265), 101 states have call successors, (103), 3 states have call predecessors, (103), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2022-03-18 12:16:22,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:16:22,469 INFO L93 Difference]: Finished difference Result 567 states and 618 transitions. [2022-03-18 12:16:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-18 12:16:22,469 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 156 states have (on average 1.6987179487179487) internal successors, (265), 155 states have internal predecessors, (265), 101 states have call successors, (103), 3 states have call predecessors, (103), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Word has length 405 [2022-03-18 12:16:22,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:16:22,471 INFO L225 Difference]: With dead ends: 567 [2022-03-18 12:16:22,471 INFO L226 Difference]: Without dead ends: 409 [2022-03-18 12:16:22,473 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 857 SyntacticMatches, 1 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18237 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=12096, Invalid=53696, Unknown=0, NotChecked=0, Total=65792 [2022-03-18 12:16:22,473 INFO L912 BasicCegarLoop]: 61 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 12:16:22,474 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 113 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 12:16:22,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-03-18 12:16:22,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2022-03-18 12:16:22,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 305 states have (on average 1.0065573770491802) internal successors, (307), 306 states have internal predecessors, (307), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-03-18 12:16:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2022-03-18 12:16:22,514 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 405 [2022-03-18 12:16:22,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:16:22,514 INFO L478 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2022-03-18 12:16:22,514 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 156 states have (on average 1.6987179487179487) internal successors, (265), 155 states have internal predecessors, (265), 101 states have call successors, (103), 3 states have call predecessors, (103), 1 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2022-03-18 12:16:22,514 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2022-03-18 12:16:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-03-18 12:16:22,516 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:16:22,516 INFO L500 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:16:22,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-03-18 12:16:22,730 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-03-18 12:16:22,731 INFO L403 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:16:22,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:16:22,731 INFO L85 PathProgramCache]: Analyzing trace with hash -699980212, now seen corresponding path program 98 times [2022-03-18 12:16:22,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:16:22,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053920251] [2022-03-18 12:16:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:16:22,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:16:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:16:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:16:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:16:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:16:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:16:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:16:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:16:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:16:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:16:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:16:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:16:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:16:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:16:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:16:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:16:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:16:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:16:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:16:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:16:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:16:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:16:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:16:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:16:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:16:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:16:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:16:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:16:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:16:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:16:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:16:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:16:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:16:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:16:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:16:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:16:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-03-18 12:16:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-18 12:16:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-03-18 12:16:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-18 12:16:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-03-18 12:16:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-18 12:16:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-03-18 12:16:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-18 12:16:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-03-18 12:16:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-18 12:16:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-03-18 12:16:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-18 12:16:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-03-18 12:16:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-18 12:16:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-03-18 12:16:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1323 proven. 3676 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-03-18 12:16:23,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:16:23,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053920251] [2022-03-18 12:16:23,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053920251] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:16:23,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644488113] [2022-03-18 12:16:23,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:16:23,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:16:23,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:16:23,818 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:16:23,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-18 12:16:23,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:16:23,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:16:23,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 103 conjunts are in the unsatisfiable core [2022-03-18 12:16:23,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:16:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-03-18 12:16:24,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:16:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-03-18 12:16:25,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644488113] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:16:25,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:16:25,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 59 [2022-03-18 12:16:25,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963389799] [2022-03-18 12:16:25,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:16:25,001 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-03-18 12:16:25,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:16:25,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-03-18 12:16:25,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1393, Invalid=2029, Unknown=0, NotChecked=0, Total=3422 [2022-03-18 12:16:25,002 INFO L87 Difference]: Start difference. First operand 409 states and 410 transitions. Second operand has 59 states, 59 states have (on average 2.7966101694915255) internal successors, (165), 56 states have internal predecessors, (165), 51 states have call successors, (54), 4 states have call predecessors, (54), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-03-18 12:16:25,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:16:25,897 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2022-03-18 12:16:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-18 12:16:25,897 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.7966101694915255) internal successors, (165), 56 states have internal predecessors, (165), 51 states have call successors, (54), 4 states have call predecessors, (54), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 406 [2022-03-18 12:16:25,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:16:25,899 INFO L225 Difference]: With dead ends: 422 [2022-03-18 12:16:25,899 INFO L226 Difference]: Without dead ends: 420 [2022-03-18 12:16:25,901 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 957 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=4171, Invalid=8711, Unknown=0, NotChecked=0, Total=12882 [2022-03-18 12:16:25,901 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 134 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:16:25,902 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 65 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:16:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-18 12:16:25,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 416. [2022-03-18 12:16:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 310 states have (on average 1.0064516129032257) internal successors, (312), 311 states have internal predecessors, (312), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-18 12:16:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 417 transitions. [2022-03-18 12:16:25,958 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 417 transitions. Word has length 406 [2022-03-18 12:16:25,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:16:25,958 INFO L478 AbstractCegarLoop]: Abstraction has 416 states and 417 transitions. [2022-03-18 12:16:25,959 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.7966101694915255) internal successors, (165), 56 states have internal predecessors, (165), 51 states have call successors, (54), 4 states have call predecessors, (54), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-03-18 12:16:25,959 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 417 transitions. [2022-03-18 12:16:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-03-18 12:16:25,961 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:16:25,961 INFO L500 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:16:25,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-03-18 12:16:26,175 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:16:26,175 INFO L403 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:16:26,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:16:26,176 INFO L85 PathProgramCache]: Analyzing trace with hash -341442394, now seen corresponding path program 99 times [2022-03-18 12:16:26,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:16:26,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227146771] [2022-03-18 12:16:26,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:16:26,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:16:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:16:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 12:16:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:16:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:16:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:16:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:16:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:16:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:16:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:16:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:16:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:16:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:16:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:16:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:16:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:16:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:16:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:16:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:16:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:16:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:16:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:16:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:16:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:16:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:16:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:16:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:16:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:16:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:16:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:16:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:16:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:16:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:16:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:16:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:16:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:16:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-03-18 12:16:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-18 12:16:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-03-18 12:16:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-18 12:16:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-03-18 12:16:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-18 12:16:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-03-18 12:16:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-18 12:16:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-03-18 12:16:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-18 12:16:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-03-18 12:16:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-18 12:16:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-03-18 12:16:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-18 12:16:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-03-18 12:16:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-18 12:16:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3727 proven. 1423 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-03-18 12:16:28,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:16:28,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227146771] [2022-03-18 12:16:28,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227146771] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:16:28,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778725395] [2022-03-18 12:16:28,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:16:28,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:16:28,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:16:28,119 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:16:28,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-18 12:16:28,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2022-03-18 12:16:28,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:16:28,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 104 conjunts are in the unsatisfiable core [2022-03-18 12:16:28,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:16:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-03-18 12:16:32,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:16:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-03-18 12:16:33,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778725395] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:16:33,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:16:33,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105, 105] total 159 [2022-03-18 12:16:33,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621930971] [2022-03-18 12:16:33,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:16:33,727 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2022-03-18 12:16:33,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:16:33,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2022-03-18 12:16:33,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5571, Invalid=19551, Unknown=0, NotChecked=0, Total=25122 [2022-03-18 12:16:33,730 INFO L87 Difference]: Start difference. First operand 416 states and 417 transitions. Second operand has 159 states, 159 states have (on average 1.6981132075471699) internal successors, (270), 158 states have internal predecessors, (270), 103 states have call successors, (105), 3 states have call predecessors, (105), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2022-03-18 12:16:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:16:38,572 INFO L93 Difference]: Finished difference Result 578 states and 630 transitions. [2022-03-18 12:16:38,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-18 12:16:38,573 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 1.6981132075471699) internal successors, (270), 158 states have internal predecessors, (270), 103 states have call successors, (105), 3 states have call predecessors, (105), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Word has length 413 [2022-03-18 12:16:38,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:16:38,579 INFO L225 Difference]: With dead ends: 578 [2022-03-18 12:16:38,579 INFO L226 Difference]: Without dead ends: 417 [2022-03-18 12:16:38,585 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 874 SyntacticMatches, 1 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18959 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=12567, Invalid=55815, Unknown=0, NotChecked=0, Total=68382 [2022-03-18 12:16:38,585 INFO L912 BasicCegarLoop]: 62 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2981 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:16:38,585 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 134 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 2981 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 12:16:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-03-18 12:16:38,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-03-18 12:16:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 311 states have (on average 1.0064308681672025) internal successors, (313), 312 states have internal predecessors, (313), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-18 12:16:38,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2022-03-18 12:16:38,646 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 413 [2022-03-18 12:16:38,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:16:38,646 INFO L478 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2022-03-18 12:16:38,646 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 159 states have (on average 1.6981132075471699) internal successors, (270), 158 states have internal predecessors, (270), 103 states have call successors, (105), 3 states have call predecessors, (105), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2022-03-18 12:16:38,646 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2022-03-18 12:16:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-03-18 12:16:38,648 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:16:38,649 INFO L500 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:16:38,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-03-18 12:16:38,874 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:16:38,874 INFO L403 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:16:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:16:38,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1384443246, now seen corresponding path program 100 times [2022-03-18 12:16:38,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:16:38,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816107869] [2022-03-18 12:16:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:16:38,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:16:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:16:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:16:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:16:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:16:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:16:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:16:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:16:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:16:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:16:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:16:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:16:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:16:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:16:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:16:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:16:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:16:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:16:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:16:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:16:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:16:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:16:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:16:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:16:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:16:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:16:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:16:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:16:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:16:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:16:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:16:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:16:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:16:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:16:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:16:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:16:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:16:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-03-18 12:16:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-18 12:16:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-03-18 12:16:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-18 12:16:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-03-18 12:16:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-18 12:16:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-03-18 12:16:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-18 12:16:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-03-18 12:16:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-18 12:16:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-03-18 12:16:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-18 12:16:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-03-18 12:16:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-18 12:16:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-03-18 12:16:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1375 proven. 3826 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-03-18 12:16:40,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:16:40,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816107869] [2022-03-18 12:16:40,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816107869] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:16:40,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347440393] [2022-03-18 12:16:40,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:16:40,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:16:40,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:16:40,213 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:16:40,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-18 12:16:40,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:16:40,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:16:40,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 105 conjunts are in the unsatisfiable core [2022-03-18 12:16:40,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:16:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-03-18 12:16:41,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:16:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-03-18 12:16:41,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347440393] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:16:41,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:16:41,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 60 [2022-03-18 12:16:41,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121266608] [2022-03-18 12:16:41,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:16:41,882 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-03-18 12:16:41,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:16:41,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-03-18 12:16:41,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1446, Invalid=2094, Unknown=0, NotChecked=0, Total=3540 [2022-03-18 12:16:41,883 INFO L87 Difference]: Start difference. First operand 417 states and 418 transitions. Second operand has 60 states, 60 states have (on average 2.8) internal successors, (168), 57 states have internal predecessors, (168), 52 states have call successors, (55), 4 states have call predecessors, (55), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-03-18 12:16:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:16:43,465 INFO L93 Difference]: Finished difference Result 430 states and 432 transitions. [2022-03-18 12:16:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-18 12:16:43,465 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.8) internal successors, (168), 57 states have internal predecessors, (168), 52 states have call successors, (55), 4 states have call predecessors, (55), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 414 [2022-03-18 12:16:43,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:16:43,467 INFO L225 Difference]: With dead ends: 430 [2022-03-18 12:16:43,467 INFO L226 Difference]: Without dead ends: 428 [2022-03-18 12:16:43,468 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1092 GetRequests, 976 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2354 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4330, Invalid=9010, Unknown=0, NotChecked=0, Total=13340 [2022-03-18 12:16:43,468 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 135 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:16:43,469 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 45 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 12:16:43,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-03-18 12:16:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 424. [2022-03-18 12:16:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 316 states have (on average 1.0063291139240507) internal successors, (318), 317 states have internal predecessors, (318), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-03-18 12:16:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 425 transitions. [2022-03-18 12:16:43,526 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 425 transitions. Word has length 414 [2022-03-18 12:16:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:16:43,527 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 425 transitions. [2022-03-18 12:16:43,527 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.8) internal successors, (168), 57 states have internal predecessors, (168), 52 states have call successors, (55), 4 states have call predecessors, (55), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-03-18 12:16:43,527 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 425 transitions. [2022-03-18 12:16:43,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-03-18 12:16:43,529 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:16:43,529 INFO L500 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:16:43,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-03-18 12:16:43,753 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-03-18 12:16:43,753 INFO L403 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:16:43,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:16:43,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1989300036, now seen corresponding path program 101 times [2022-03-18 12:16:43,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:16:43,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699634934] [2022-03-18 12:16:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:16:43,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:16:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:16:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-03-18 12:16:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:16:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:16:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:16:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:16:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:16:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:16:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:16:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:16:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:16:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:16:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:16:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:16:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:16:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:16:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:16:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:16:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:16:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:16:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:16:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:16:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:16:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:16:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:16:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:16:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:16:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:16:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:16:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:16:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:16:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:16:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:16:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:16:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:16:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:16:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-03-18 12:16:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-18 12:16:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-03-18 12:16:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-18 12:16:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-03-18 12:16:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-18 12:16:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-03-18 12:16:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-18 12:16:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-03-18 12:16:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-18 12:16:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-03-18 12:16:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-18 12:16:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-03-18 12:16:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-18 12:16:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-03-18 12:16:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-18 12:16:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 3878 proven. 1477 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-03-18 12:16:46,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:16:46,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699634934] [2022-03-18 12:16:46,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699634934] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:16:46,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862911376] [2022-03-18 12:16:46,811 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:16:46,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:16:46,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:16:46,812 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:16:46,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-18 12:16:47,143 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2022-03-18 12:16:47,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:16:47,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 106 conjunts are in the unsatisfiable core [2022-03-18 12:16:47,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:16:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-03-18 12:16:51,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:16:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-03-18 12:16:51,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862911376] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:16:51,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:16:51,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107, 107] total 162 [2022-03-18 12:16:51,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572363320] [2022-03-18 12:16:51,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:16:51,824 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-03-18 12:16:51,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:16:51,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-03-18 12:16:51,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5784, Invalid=20298, Unknown=0, NotChecked=0, Total=26082 [2022-03-18 12:16:51,826 INFO L87 Difference]: Start difference. First operand 424 states and 425 transitions. Second operand has 162 states, 162 states have (on average 1.6975308641975309) internal successors, (275), 161 states have internal predecessors, (275), 105 states have call successors, (107), 3 states have call predecessors, (107), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-03-18 12:16:56,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:16:56,757 INFO L93 Difference]: Finished difference Result 589 states and 642 transitions. [2022-03-18 12:16:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-03-18 12:16:56,757 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 162 states have (on average 1.6975308641975309) internal successors, (275), 161 states have internal predecessors, (275), 105 states have call successors, (107), 3 states have call predecessors, (107), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Word has length 421 [2022-03-18 12:16:56,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:16:56,759 INFO L225 Difference]: With dead ends: 589 [2022-03-18 12:16:56,759 INFO L226 Difference]: Without dead ends: 425 [2022-03-18 12:16:56,764 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1157 GetRequests, 891 SyntacticMatches, 1 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19695 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=13047, Invalid=57975, Unknown=0, NotChecked=0, Total=71022 [2022-03-18 12:16:56,764 INFO L912 BasicCegarLoop]: 63 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 2997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:16:56,764 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 115 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 2997 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 12:16:56,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-03-18 12:16:56,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2022-03-18 12:16:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 317 states have (on average 1.0063091482649842) internal successors, (319), 318 states have internal predecessors, (319), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-03-18 12:16:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2022-03-18 12:16:56,825 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 421 [2022-03-18 12:16:56,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:16:56,825 INFO L478 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2022-03-18 12:16:56,826 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 1.6975308641975309) internal successors, (275), 161 states have internal predecessors, (275), 105 states have call successors, (107), 3 states have call predecessors, (107), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-03-18 12:16:56,826 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2022-03-18 12:16:56,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-03-18 12:16:56,827 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:16:56,828 INFO L500 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:16:56,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-03-18 12:16:57,041 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-03-18 12:16:57,041 INFO L403 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:16:57,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:16:57,041 INFO L85 PathProgramCache]: Analyzing trace with hash 188478476, now seen corresponding path program 102 times [2022-03-18 12:16:57,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:16:57,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070997866] [2022-03-18 12:16:57,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:16:57,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:16:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:16:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:16:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:16:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:16:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:16:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:16:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:16:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:16:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:16:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:16:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:16:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:16:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:16:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:16:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:16:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:16:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:16:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:16:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:16:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:16:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:16:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:16:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:16:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:16:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:16:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:16:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:16:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:16:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:16:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:16:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:16:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:16:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:16:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:16:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:16:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:16:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:16:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-03-18 12:16:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-18 12:16:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-03-18 12:16:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-18 12:16:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-03-18 12:16:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-18 12:16:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-03-18 12:16:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-18 12:16:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-03-18 12:16:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-18 12:16:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-03-18 12:16:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-18 12:16:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-03-18 12:16:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-18 12:16:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-03-18 12:16:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:16:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1428 proven. 3979 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-03-18 12:16:58,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:16:58,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070997866] [2022-03-18 12:16:58,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070997866] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:16:58,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029141327] [2022-03-18 12:16:58,424 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:16:58,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:16:58,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:16:58,425 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:16:58,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-18 12:16:58,682 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2022-03-18 12:16:58,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:16:58,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 107 conjunts are in the unsatisfiable core [2022-03-18 12:16:58,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:16:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-03-18 12:16:59,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:17:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-03-18 12:17:00,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029141327] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:17:00,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:17:00,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 61 [2022-03-18 12:17:00,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100809642] [2022-03-18 12:17:00,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:17:00,181 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-18 12:17:00,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:17:00,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-18 12:17:00,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1500, Invalid=2160, Unknown=0, NotChecked=0, Total=3660 [2022-03-18 12:17:00,183 INFO L87 Difference]: Start difference. First operand 425 states and 426 transitions. Second operand has 61 states, 61 states have (on average 2.80327868852459) internal successors, (171), 58 states have internal predecessors, (171), 53 states have call successors, (56), 4 states have call predecessors, (56), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-18 12:17:01,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:17:01,740 INFO L93 Difference]: Finished difference Result 438 states and 440 transitions. [2022-03-18 12:17:01,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-18 12:17:01,741 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.80327868852459) internal successors, (171), 58 states have internal predecessors, (171), 53 states have call successors, (56), 4 states have call predecessors, (56), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 422 [2022-03-18 12:17:01,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:17:01,742 INFO L225 Difference]: With dead ends: 438 [2022-03-18 12:17:01,742 INFO L226 Difference]: Without dead ends: 436 [2022-03-18 12:17:01,743 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 995 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2426 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4492, Invalid=9314, Unknown=0, NotChecked=0, Total=13806 [2022-03-18 12:17:01,743 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 138 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:17:01,743 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 45 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 12:17:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-03-18 12:17:01,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 432. [2022-03-18 12:17:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 322 states have (on average 1.0062111801242235) internal successors, (324), 323 states have internal predecessors, (324), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-03-18 12:17:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 433 transitions. [2022-03-18 12:17:01,865 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 433 transitions. Word has length 422 [2022-03-18 12:17:01,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:17:01,866 INFO L478 AbstractCegarLoop]: Abstraction has 432 states and 433 transitions. [2022-03-18 12:17:01,866 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.80327868852459) internal successors, (171), 58 states have internal predecessors, (171), 53 states have call successors, (56), 4 states have call predecessors, (56), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-18 12:17:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 433 transitions. [2022-03-18 12:17:01,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-03-18 12:17:01,884 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:17:01,884 INFO L500 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:17:01,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-03-18 12:17:02,084 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-03-18 12:17:02,085 INFO L403 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:17:02,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:17:02,085 INFO L85 PathProgramCache]: Analyzing trace with hash 906115814, now seen corresponding path program 103 times [2022-03-18 12:17:02,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:17:02,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509115630] [2022-03-18 12:17:02,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:17:02,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:17:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:17:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-03-18 12:17:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:17:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:17:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:17:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:17:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:17:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:17:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:17:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:17:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:17:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:17:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:17:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:17:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:17:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:17:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:17:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:17:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:17:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:17:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:17:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:17:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:17:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:17:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:17:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:17:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:17:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:17:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:17:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:17:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:17:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:17:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:17:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:17:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:17:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:17:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:17:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-03-18 12:17:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-18 12:17:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-03-18 12:17:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-18 12:17:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-03-18 12:17:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-18 12:17:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-03-18 12:17:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-18 12:17:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-03-18 12:17:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-18 12:17:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-03-18 12:17:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-18 12:17:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-03-18 12:17:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-18 12:17:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-03-18 12:17:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-18 12:17:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4032 proven. 1532 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-03-18 12:17:04,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:17:04,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509115630] [2022-03-18 12:17:04,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509115630] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:17:04,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472453798] [2022-03-18 12:17:04,937 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:17:04,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:04,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:17:04,939 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:17:04,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-18 12:17:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:05,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 108 conjunts are in the unsatisfiable core [2022-03-18 12:17:05,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:17:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-03-18 12:17:08,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:17:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-03-18 12:17:09,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472453798] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:17:09,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:17:09,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109, 109] total 165 [2022-03-18 12:17:09,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305335280] [2022-03-18 12:17:09,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:17:09,519 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2022-03-18 12:17:09,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:17:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2022-03-18 12:17:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6001, Invalid=21059, Unknown=0, NotChecked=0, Total=27060 [2022-03-18 12:17:09,522 INFO L87 Difference]: Start difference. First operand 432 states and 433 transitions. Second operand has 165 states, 165 states have (on average 1.696969696969697) internal successors, (280), 164 states have internal predecessors, (280), 107 states have call successors, (109), 3 states have call predecessors, (109), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2022-03-18 12:17:13,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:17:13,607 INFO L93 Difference]: Finished difference Result 600 states and 654 transitions. [2022-03-18 12:17:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-03-18 12:17:13,607 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 1.696969696969697) internal successors, (280), 164 states have internal predecessors, (280), 107 states have call successors, (109), 3 states have call predecessors, (109), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) Word has length 429 [2022-03-18 12:17:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:17:13,608 INFO L225 Difference]: With dead ends: 600 [2022-03-18 12:17:13,608 INFO L226 Difference]: Without dead ends: 433 [2022-03-18 12:17:13,614 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1179 GetRequests, 908 SyntacticMatches, 1 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20445 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=13536, Invalid=60176, Unknown=0, NotChecked=0, Total=73712 [2022-03-18 12:17:13,614 INFO L912 BasicCegarLoop]: 64 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:17:13,614 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 136 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 12:17:13,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-03-18 12:17:13,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2022-03-18 12:17:13,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 323 states have (on average 1.0061919504643964) internal successors, (325), 324 states have internal predecessors, (325), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-03-18 12:17:13,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 434 transitions. [2022-03-18 12:17:13,659 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 434 transitions. Word has length 429 [2022-03-18 12:17:13,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:17:13,659 INFO L478 AbstractCegarLoop]: Abstraction has 433 states and 434 transitions. [2022-03-18 12:17:13,659 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 1.696969696969697) internal successors, (280), 164 states have internal predecessors, (280), 107 states have call successors, (109), 3 states have call predecessors, (109), 1 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2022-03-18 12:17:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 434 transitions. [2022-03-18 12:17:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-03-18 12:17:13,661 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:17:13,661 INFO L500 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:17:13,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-03-18 12:17:13,875 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:13,875 INFO L403 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:17:13,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:17:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1103194194, now seen corresponding path program 104 times [2022-03-18 12:17:13,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:17:13,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17860869] [2022-03-18 12:17:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:17:13,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:17:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:17:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:17:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:17:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:17:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:17:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:17:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:17:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:17:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:17:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:17:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:17:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:17:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:17:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:17:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:17:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:17:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:17:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:17:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:17:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:17:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:17:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:17:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:17:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:17:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:17:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:17:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:17:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:17:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:17:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:17:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:17:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:17:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:17:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:17:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:17:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:17:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:17:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:17:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-03-18 12:17:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-18 12:17:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-03-18 12:17:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-18 12:17:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-03-18 12:17:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-18 12:17:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-03-18 12:17:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-18 12:17:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-03-18 12:17:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-18 12:17:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-03-18 12:17:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-18 12:17:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-03-18 12:17:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-18 12:17:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-03-18 12:17:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10921 backedges. 1482 proven. 4135 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-03-18 12:17:14,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:17:14,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17860869] [2022-03-18 12:17:14,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17860869] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:17:14,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269435665] [2022-03-18 12:17:14,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:17:14,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:14,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:17:14,698 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:17:14,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-18 12:17:14,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:17:14,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:17:14,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 109 conjunts are in the unsatisfiable core [2022-03-18 12:17:14,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:17:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 10921 backedges. 1535 proven. 4082 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-03-18 12:17:15,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:17:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 10921 backedges. 1535 proven. 4082 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-03-18 12:17:15,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269435665] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:17:15,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:17:15,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 62 [2022-03-18 12:17:15,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727770116] [2022-03-18 12:17:15,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:17:15,583 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-18 12:17:15,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:17:15,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-18 12:17:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1555, Invalid=2227, Unknown=0, NotChecked=0, Total=3782 [2022-03-18 12:17:15,584 INFO L87 Difference]: Start difference. First operand 433 states and 434 transitions. Second operand has 62 states, 62 states have (on average 2.806451612903226) internal successors, (174), 59 states have internal predecessors, (174), 54 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-03-18 12:17:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:17:16,508 INFO L93 Difference]: Finished difference Result 446 states and 448 transitions. [2022-03-18 12:17:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-18 12:17:16,508 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.806451612903226) internal successors, (174), 59 states have internal predecessors, (174), 54 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Word has length 430 [2022-03-18 12:17:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:17:16,509 INFO L225 Difference]: With dead ends: 446 [2022-03-18 12:17:16,509 INFO L226 Difference]: Without dead ends: 444 [2022-03-18 12:17:16,510 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1014 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=4657, Invalid=9623, Unknown=0, NotChecked=0, Total=14280 [2022-03-18 12:17:16,510 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 144 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:17:16,510 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 40 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:17:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-03-18 12:17:16,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 440. [2022-03-18 12:17:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 328 states have (on average 1.0060975609756098) internal successors, (330), 329 states have internal predecessors, (330), 56 states have call successors, (56), 56 states have call predecessors, (56), 55 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-03-18 12:17:16,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 441 transitions. [2022-03-18 12:17:16,556 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 441 transitions. Word has length 430 [2022-03-18 12:17:16,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:17:16,556 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 441 transitions. [2022-03-18 12:17:16,556 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.806451612903226) internal successors, (174), 59 states have internal predecessors, (174), 54 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-03-18 12:17:16,556 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 441 transitions. [2022-03-18 12:17:16,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-03-18 12:17:16,557 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:17:16,558 INFO L500 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:17:16,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-03-18 12:17:16,775 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-03-18 12:17:16,775 INFO L403 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:17:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:17:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1731158780, now seen corresponding path program 105 times [2022-03-18 12:17:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:17:16,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891073757] [2022-03-18 12:17:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:17:16,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:17:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:17:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-03-18 12:17:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:17:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:17:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:17:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:17:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:17:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:17:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:17:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:17:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:17:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:17:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:17:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:17:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:17:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:17:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:17:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:17:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:17:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:17:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:17:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:17:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:17:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:17:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:17:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:17:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:17:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:17:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:17:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:17:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:17:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:17:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:17:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:17:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:17:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:17:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:17:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:17:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-03-18 12:17:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-18 12:17:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-03-18 12:17:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-18 12:17:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-03-18 12:17:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-18 12:17:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-03-18 12:17:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-18 12:17:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-03-18 12:17:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-18 12:17:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-03-18 12:17:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-18 12:17:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-03-18 12:17:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-18 12:17:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-03-18 12:17:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-18 12:17:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 11289 backedges. 4189 proven. 1588 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-03-18 12:17:18,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:17:18,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891073757] [2022-03-18 12:17:18,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891073757] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:17:18,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611779326] [2022-03-18 12:17:18,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:17:18,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:18,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:17:18,838 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:17:18,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-18 12:17:19,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2022-03-18 12:17:19,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:17:19,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 110 conjunts are in the unsatisfiable core [2022-03-18 12:17:19,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:17:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 11289 backedges. 4346 proven. 1431 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-03-18 12:17:22,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:17:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 11289 backedges. 4346 proven. 1431 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-03-18 12:17:22,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611779326] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:17:22,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:17:22,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 111, 111] total 168 [2022-03-18 12:17:22,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110968492] [2022-03-18 12:17:22,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:17:22,522 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2022-03-18 12:17:22,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:17:22,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2022-03-18 12:17:22,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6222, Invalid=21834, Unknown=0, NotChecked=0, Total=28056 [2022-03-18 12:17:22,524 INFO L87 Difference]: Start difference. First operand 440 states and 441 transitions. Second operand has 168 states, 168 states have (on average 1.6964285714285714) internal successors, (285), 167 states have internal predecessors, (285), 109 states have call successors, (111), 3 states have call predecessors, (111), 1 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2022-03-18 12:17:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:17:25,427 INFO L93 Difference]: Finished difference Result 611 states and 666 transitions. [2022-03-18 12:17:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-03-18 12:17:25,427 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 168 states have (on average 1.6964285714285714) internal successors, (285), 167 states have internal predecessors, (285), 109 states have call successors, (111), 3 states have call predecessors, (111), 1 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) Word has length 437 [2022-03-18 12:17:25,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:17:25,428 INFO L225 Difference]: With dead ends: 611 [2022-03-18 12:17:25,428 INFO L226 Difference]: Without dead ends: 441 [2022-03-18 12:17:25,433 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1201 GetRequests, 925 SyntacticMatches, 1 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21209 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=14034, Invalid=62418, Unknown=0, NotChecked=0, Total=76452 [2022-03-18 12:17:25,433 INFO L912 BasicCegarLoop]: 65 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:17:25,433 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 102 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:17:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-03-18 12:17:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-03-18 12:17:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 329 states have (on average 1.006079027355623) internal successors, (331), 330 states have internal predecessors, (331), 56 states have call successors, (56), 56 states have call predecessors, (56), 55 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-03-18 12:17:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2022-03-18 12:17:25,479 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 437 [2022-03-18 12:17:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:17:25,480 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2022-03-18 12:17:25,480 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 168 states have (on average 1.6964285714285714) internal successors, (285), 167 states have internal predecessors, (285), 109 states have call successors, (111), 3 states have call predecessors, (111), 1 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2022-03-18 12:17:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2022-03-18 12:17:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-03-18 12:17:25,481 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:17:25,481 INFO L500 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:17:25,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-03-18 12:17:25,695 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-03-18 12:17:25,695 INFO L403 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:17:25,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:17:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1838698036, now seen corresponding path program 106 times [2022-03-18 12:17:25,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:17:25,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751379612] [2022-03-18 12:17:25,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:17:25,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:17:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:17:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:17:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:17:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:17:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:17:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:17:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:17:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:17:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:17:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:17:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:17:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:17:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:17:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:17:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:17:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:17:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:17:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:17:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:17:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:17:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:17:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:17:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:17:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:17:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:17:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:17:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:17:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:17:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:17:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:17:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:17:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:17:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:17:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:17:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:17:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:17:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:17:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:17:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:17:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-03-18 12:17:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-18 12:17:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-03-18 12:17:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-18 12:17:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-03-18 12:17:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-18 12:17:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-03-18 12:17:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-18 12:17:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-03-18 12:17:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-18 12:17:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-03-18 12:17:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-18 12:17:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-03-18 12:17:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-18 12:17:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-03-18 12:17:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 1537 proven. 4294 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-03-18 12:17:26,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:17:26,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751379612] [2022-03-18 12:17:26,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751379612] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:17:26,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111981633] [2022-03-18 12:17:26,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:17:26,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:26,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:17:26,709 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:17:26,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-18 12:17:26,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:17:26,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:17:26,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 111 conjunts are in the unsatisfiable core [2022-03-18 12:17:26,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:17:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 1591 proven. 4240 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-03-18 12:17:27,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:17:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 1591 proven. 4240 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-03-18 12:17:28,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111981633] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:17:28,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:17:28,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 63 [2022-03-18 12:17:28,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213381237] [2022-03-18 12:17:28,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:17:28,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-18 12:17:28,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:17:28,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-18 12:17:28,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1611, Invalid=2295, Unknown=0, NotChecked=0, Total=3906 [2022-03-18 12:17:28,188 INFO L87 Difference]: Start difference. First operand 441 states and 442 transitions. Second operand has 63 states, 63 states have (on average 2.8095238095238093) internal successors, (177), 60 states have internal predecessors, (177), 55 states have call successors, (58), 4 states have call predecessors, (58), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-03-18 12:17:29,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:17:29,209 INFO L93 Difference]: Finished difference Result 454 states and 456 transitions. [2022-03-18 12:17:29,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-18 12:17:29,210 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.8095238095238093) internal successors, (177), 60 states have internal predecessors, (177), 55 states have call successors, (58), 4 states have call predecessors, (58), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 438 [2022-03-18 12:17:29,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:17:29,211 INFO L225 Difference]: With dead ends: 454 [2022-03-18 12:17:29,211 INFO L226 Difference]: Without dead ends: 452 [2022-03-18 12:17:29,211 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1155 GetRequests, 1033 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2573 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=4825, Invalid=9937, Unknown=0, NotChecked=0, Total=14762 [2022-03-18 12:17:29,212 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 140 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:17:29,212 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 70 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:17:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-03-18 12:17:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 448. [2022-03-18 12:17:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 334 states have (on average 1.0059880239520957) internal successors, (336), 335 states have internal predecessors, (336), 57 states have call successors, (57), 57 states have call predecessors, (57), 56 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-18 12:17:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 449 transitions. [2022-03-18 12:17:29,259 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 449 transitions. Word has length 438 [2022-03-18 12:17:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:17:29,259 INFO L478 AbstractCegarLoop]: Abstraction has 448 states and 449 transitions. [2022-03-18 12:17:29,259 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.8095238095238093) internal successors, (177), 60 states have internal predecessors, (177), 55 states have call successors, (58), 4 states have call predecessors, (58), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-03-18 12:17:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 449 transitions. [2022-03-18 12:17:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-03-18 12:17:29,261 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:17:29,261 INFO L500 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:17:29,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-03-18 12:17:29,464 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:29,465 INFO L403 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:17:29,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:17:29,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2138670374, now seen corresponding path program 107 times [2022-03-18 12:17:29,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:17:29,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391807085] [2022-03-18 12:17:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:17:29,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:17:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:17:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-03-18 12:17:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:17:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:17:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:17:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:17:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:17:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:17:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:17:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:17:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:17:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:17:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:17:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:17:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:17:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:17:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:17:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:17:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:17:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:17:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:17:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:17:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:17:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:17:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:17:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:17:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:17:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:17:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:17:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:17:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:17:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:17:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:17:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:17:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:17:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:17:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:17:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:17:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:17:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-03-18 12:17:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-18 12:17:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-03-18 12:17:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-18 12:17:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-03-18 12:17:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-18 12:17:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-03-18 12:17:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-18 12:17:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-03-18 12:17:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-18 12:17:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-03-18 12:17:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-18 12:17:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-03-18 12:17:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-18 12:17:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-03-18 12:17:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-18 12:17:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 4349 proven. 1645 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-03-18 12:17:31,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:17:31,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391807085] [2022-03-18 12:17:31,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391807085] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:17:31,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461267404] [2022-03-18 12:17:31,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:17:31,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:31,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:17:31,620 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:17:31,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-18 12:17:31,815 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2022-03-18 12:17:31,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:17:31,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 112 conjunts are in the unsatisfiable core [2022-03-18 12:17:31,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:17:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 4509 proven. 1485 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-03-18 12:17:34,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:17:34,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 4509 proven. 1485 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-03-18 12:17:34,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461267404] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:17:34,860 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:17:34,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 113, 113] total 171 [2022-03-18 12:17:34,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087003715] [2022-03-18 12:17:34,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:17:34,861 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2022-03-18 12:17:34,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:17:34,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2022-03-18 12:17:34,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6447, Invalid=22623, Unknown=0, NotChecked=0, Total=29070 [2022-03-18 12:17:34,863 INFO L87 Difference]: Start difference. First operand 448 states and 449 transitions. Second operand has 171 states, 171 states have (on average 1.695906432748538) internal successors, (290), 170 states have internal predecessors, (290), 111 states have call successors, (113), 3 states have call predecessors, (113), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2022-03-18 12:17:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:17:38,063 INFO L93 Difference]: Finished difference Result 622 states and 678 transitions. [2022-03-18 12:17:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-18 12:17:38,064 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 171 states have (on average 1.695906432748538) internal successors, (290), 170 states have internal predecessors, (290), 111 states have call successors, (113), 3 states have call predecessors, (113), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) Word has length 445 [2022-03-18 12:17:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:17:38,065 INFO L225 Difference]: With dead ends: 622 [2022-03-18 12:17:38,065 INFO L226 Difference]: Without dead ends: 449 [2022-03-18 12:17:38,069 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1223 GetRequests, 942 SyntacticMatches, 1 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21987 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=14541, Invalid=64701, Unknown=0, NotChecked=0, Total=79242 [2022-03-18 12:17:38,070 INFO L912 BasicCegarLoop]: 66 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 3278 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 3514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 3278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 12:17:38,070 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 133 Invalid, 3514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 3278 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 12:17:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-03-18 12:17:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2022-03-18 12:17:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 335 states have (on average 1.0059701492537314) internal successors, (337), 336 states have internal predecessors, (337), 57 states have call successors, (57), 57 states have call predecessors, (57), 56 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-18 12:17:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 450 transitions. [2022-03-18 12:17:38,134 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 450 transitions. Word has length 445 [2022-03-18 12:17:38,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:17:38,134 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 450 transitions. [2022-03-18 12:17:38,134 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 171 states have (on average 1.695906432748538) internal successors, (290), 170 states have internal predecessors, (290), 111 states have call successors, (113), 3 states have call predecessors, (113), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2022-03-18 12:17:38,134 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 450 transitions. [2022-03-18 12:17:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-03-18 12:17:38,136 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:17:38,136 INFO L500 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:17:38,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-03-18 12:17:38,352 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:38,352 INFO L403 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:17:38,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:17:38,352 INFO L85 PathProgramCache]: Analyzing trace with hash 540234222, now seen corresponding path program 108 times [2022-03-18 12:17:38,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:17:38,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453269138] [2022-03-18 12:17:38,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:17:38,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:17:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:17:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:17:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:17:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:17:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:17:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:17:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:17:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:17:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:17:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:17:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:17:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:17:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:17:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:17:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:17:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:17:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:17:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:17:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:17:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:17:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:17:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:17:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:17:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:17:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:17:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:17:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:17:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:17:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:17:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:17:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:17:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:17:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-03-18 12:17:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-18 12:17:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-03-18 12:17:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-18 12:17:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-03-18 12:17:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-18 12:17:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-03-18 12:17:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-18 12:17:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-03-18 12:17:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-18 12:17:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-03-18 12:17:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-18 12:17:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-03-18 12:17:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-18 12:17:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-03-18 12:17:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-18 12:17:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-03-18 12:17:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-18 12:17:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-03-18 12:17:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-18 12:17:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-03-18 12:17:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-18 12:17:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-03-18 12:17:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 11773 backedges. 1593 proven. 4456 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-03-18 12:17:39,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:17:39,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453269138] [2022-03-18 12:17:39,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453269138] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:17:39,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668759412] [2022-03-18 12:17:39,519 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:17:39,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:39,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:17:39,521 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:17:39,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-18 12:17:39,738 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2022-03-18 12:17:39,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:17:39,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 113 conjunts are in the unsatisfiable core [2022-03-18 12:17:39,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:17:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 11773 backedges. 1648 proven. 4401 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-03-18 12:17:40,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:17:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 11773 backedges. 1648 proven. 4401 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-03-18 12:17:40,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668759412] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:17:40,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:17:40,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 60] total 64 [2022-03-18 12:17:40,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222880172] [2022-03-18 12:17:40,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:17:40,893 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-03-18 12:17:40,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:17:40,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-03-18 12:17:40,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1668, Invalid=2364, Unknown=0, NotChecked=0, Total=4032 [2022-03-18 12:17:40,894 INFO L87 Difference]: Start difference. First operand 449 states and 450 transitions. Second operand has 64 states, 64 states have (on average 2.8125) internal successors, (180), 61 states have internal predecessors, (180), 56 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-03-18 12:17:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:17:42,217 INFO L93 Difference]: Finished difference Result 462 states and 464 transitions. [2022-03-18 12:17:42,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-18 12:17:42,217 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.8125) internal successors, (180), 61 states have internal predecessors, (180), 56 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 446 [2022-03-18 12:17:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:17:42,218 INFO L225 Difference]: With dead ends: 462 [2022-03-18 12:17:42,218 INFO L226 Difference]: Without dead ends: 460 [2022-03-18 12:17:42,220 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1052 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4996, Invalid=10256, Unknown=0, NotChecked=0, Total=15252 [2022-03-18 12:17:42,220 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 146 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:17:42,220 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 55 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:17:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-03-18 12:17:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 456. [2022-03-18 12:17:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 340 states have (on average 1.0058823529411764) internal successors, (342), 341 states have internal predecessors, (342), 58 states have call successors, (58), 58 states have call predecessors, (58), 57 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-03-18 12:17:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 457 transitions. [2022-03-18 12:17:42,268 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 457 transitions. Word has length 446 [2022-03-18 12:17:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:17:42,269 INFO L478 AbstractCegarLoop]: Abstraction has 456 states and 457 transitions. [2022-03-18 12:17:42,269 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.8125) internal successors, (180), 61 states have internal predecessors, (180), 56 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-03-18 12:17:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 457 transitions. [2022-03-18 12:17:42,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-03-18 12:17:42,270 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:17:42,270 INFO L500 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:17:42,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-03-18 12:17:42,483 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2022-03-18 12:17:42,483 INFO L403 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:17:42,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:17:42,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1866586820, now seen corresponding path program 109 times [2022-03-18 12:17:42,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:17:42,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027551528] [2022-03-18 12:17:42,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:17:42,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:17:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:17:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-03-18 12:17:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:17:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:17:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:17:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:17:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:17:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:17:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:17:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:17:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:17:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:17:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:17:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:17:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:17:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:17:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:17:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:17:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:17:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:17:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:17:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:17:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:17:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:17:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:17:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:17:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:17:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:17:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:17:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:17:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:17:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:17:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-03-18 12:17:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-18 12:17:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-03-18 12:17:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-18 12:17:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-03-18 12:17:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-18 12:17:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-03-18 12:17:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-18 12:17:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-03-18 12:17:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-18 12:17:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-03-18 12:17:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-18 12:17:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-03-18 12:17:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-18 12:17:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-03-18 12:17:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-18 12:17:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-03-18 12:17:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-18 12:17:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-03-18 12:17:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-18 12:17:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-03-18 12:17:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-18 12:17:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-03-18 12:17:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-18 12:17:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12155 backedges. 4512 proven. 1703 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-03-18 12:17:45,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:17:45,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027551528] [2022-03-18 12:17:45,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027551528] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:17:45,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36524237] [2022-03-18 12:17:45,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:17:45,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:45,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:17:45,437 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:17:45,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-18 12:17:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:45,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 114 conjunts are in the unsatisfiable core [2022-03-18 12:17:45,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:17:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12155 backedges. 4675 proven. 1540 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-03-18 12:17:48,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:17:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 12155 backedges. 4675 proven. 1540 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-03-18 12:17:49,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36524237] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:17:49,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:17:49,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 115, 115] total 174 [2022-03-18 12:17:49,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689751616] [2022-03-18 12:17:49,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:17:49,360 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 174 states [2022-03-18 12:17:49,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:17:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2022-03-18 12:17:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6676, Invalid=23426, Unknown=0, NotChecked=0, Total=30102 [2022-03-18 12:17:49,363 INFO L87 Difference]: Start difference. First operand 456 states and 457 transitions. Second operand has 174 states, 174 states have (on average 1.6954022988505748) internal successors, (295), 173 states have internal predecessors, (295), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-03-18 12:17:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:17:52,261 INFO L93 Difference]: Finished difference Result 633 states and 690 transitions. [2022-03-18 12:17:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-18 12:17:52,261 INFO L78 Accepts]: Start accepts. Automaton has has 174 states, 174 states have (on average 1.6954022988505748) internal successors, (295), 173 states have internal predecessors, (295), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Word has length 453 [2022-03-18 12:17:52,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:17:52,262 INFO L225 Difference]: With dead ends: 633 [2022-03-18 12:17:52,262 INFO L226 Difference]: Without dead ends: 457 [2022-03-18 12:17:52,265 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 959 SyntacticMatches, 1 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22779 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=15057, Invalid=67025, Unknown=0, NotChecked=0, Total=82082 [2022-03-18 12:17:52,265 INFO L912 BasicCegarLoop]: 67 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:17:52,265 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 109 Invalid, 2553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:17:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-03-18 12:17:52,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2022-03-18 12:17:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 341 states have (on average 1.0058651026392962) internal successors, (343), 342 states have internal predecessors, (343), 58 states have call successors, (58), 58 states have call predecessors, (58), 57 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-03-18 12:17:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 458 transitions. [2022-03-18 12:17:52,314 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 458 transitions. Word has length 453 [2022-03-18 12:17:52,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:17:52,314 INFO L478 AbstractCegarLoop]: Abstraction has 457 states and 458 transitions. [2022-03-18 12:17:52,314 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 174 states, 174 states have (on average 1.6954022988505748) internal successors, (295), 173 states have internal predecessors, (295), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-03-18 12:17:52,314 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 458 transitions. [2022-03-18 12:17:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-03-18 12:17:52,316 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:17:52,316 INFO L500 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:17:52,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-03-18 12:17:52,531 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:52,532 INFO L403 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:17:52,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:17:52,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1528406132, now seen corresponding path program 110 times [2022-03-18 12:17:52,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:17:52,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849494285] [2022-03-18 12:17:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:17:52,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:17:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:17:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:17:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:17:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:17:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:17:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:17:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:17:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:17:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:17:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:17:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:17:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:17:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:17:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:17:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:17:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:17:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:17:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:17:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:17:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:17:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:17:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:17:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:17:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:17:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:17:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:17:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:17:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:17:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:17:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:17:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:17:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:17:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:17:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-03-18 12:17:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-18 12:17:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-03-18 12:17:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-18 12:17:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-03-18 12:17:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-18 12:17:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-03-18 12:17:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-18 12:17:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-03-18 12:17:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-18 12:17:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-03-18 12:17:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-18 12:17:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-03-18 12:17:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-18 12:17:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-03-18 12:17:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-18 12:17:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-03-18 12:17:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-18 12:17:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-03-18 12:17:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-18 12:17:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-03-18 12:17:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-18 12:17:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-03-18 12:17:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 12211 backedges. 1650 proven. 4621 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-03-18 12:17:53,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:17:53,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849494285] [2022-03-18 12:17:53,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849494285] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:17:53,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336516794] [2022-03-18 12:17:53,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:17:53,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:53,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:17:53,763 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:17:53,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-18 12:17:53,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:17:53,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:17:53,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 115 conjunts are in the unsatisfiable core [2022-03-18 12:17:53,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:17:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12211 backedges. 1706 proven. 4565 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-03-18 12:17:54,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:17:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12211 backedges. 1706 proven. 4565 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-03-18 12:17:54,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336516794] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:17:54,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:17:55,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 65 [2022-03-18 12:17:55,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769219881] [2022-03-18 12:17:55,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:17:55,000 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-03-18 12:17:55,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:17:55,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-03-18 12:17:55,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1726, Invalid=2434, Unknown=0, NotChecked=0, Total=4160 [2022-03-18 12:17:55,001 INFO L87 Difference]: Start difference. First operand 457 states and 458 transitions. Second operand has 65 states, 65 states have (on average 2.8153846153846156) internal successors, (183), 62 states have internal predecessors, (183), 57 states have call successors, (60), 4 states have call predecessors, (60), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-18 12:17:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:17:55,894 INFO L93 Difference]: Finished difference Result 470 states and 472 transitions. [2022-03-18 12:17:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-18 12:17:55,895 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.8153846153846156) internal successors, (183), 62 states have internal predecessors, (183), 57 states have call successors, (60), 4 states have call predecessors, (60), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 454 [2022-03-18 12:17:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:17:55,896 INFO L225 Difference]: With dead ends: 470 [2022-03-18 12:17:55,896 INFO L226 Difference]: Without dead ends: 468 [2022-03-18 12:17:55,897 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1071 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2724 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=5170, Invalid=10580, Unknown=0, NotChecked=0, Total=15750 [2022-03-18 12:17:55,898 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 146 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 12:17:55,898 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 50 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 12:17:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-03-18 12:17:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 464. [2022-03-18 12:17:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 346 states have (on average 1.0057803468208093) internal successors, (348), 347 states have internal predecessors, (348), 59 states have call successors, (59), 59 states have call predecessors, (59), 58 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-03-18 12:17:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 465 transitions. [2022-03-18 12:17:55,958 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 465 transitions. Word has length 454 [2022-03-18 12:17:55,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:17:55,958 INFO L478 AbstractCegarLoop]: Abstraction has 464 states and 465 transitions. [2022-03-18 12:17:55,958 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.8153846153846156) internal successors, (183), 62 states have internal predecessors, (183), 57 states have call successors, (60), 4 states have call predecessors, (60), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-18 12:17:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 465 transitions. [2022-03-18 12:17:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2022-03-18 12:17:55,960 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:17:55,960 INFO L500 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:17:55,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-03-18 12:17:56,178 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-03-18 12:17:56,178 INFO L403 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:17:56,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:17:56,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1466949478, now seen corresponding path program 111 times [2022-03-18 12:17:56,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:17:56,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861433915] [2022-03-18 12:17:56,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:17:56,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:17:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:17:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 12:17:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:17:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:17:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:17:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:17:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:17:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:17:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:17:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:17:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:17:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:17:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:17:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:17:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:17:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:17:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:17:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:17:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:17:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:17:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:17:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:17:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:17:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:17:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:17:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:17:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:17:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:17:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:17:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:17:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:17:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:17:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:17:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-03-18 12:17:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-18 12:17:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-03-18 12:17:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-18 12:17:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-03-18 12:17:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-18 12:17:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-03-18 12:17:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-18 12:17:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-03-18 12:17:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-18 12:17:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-03-18 12:17:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-18 12:17:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-03-18 12:17:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-18 12:17:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-03-18 12:17:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-18 12:17:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-03-18 12:17:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-18 12:17:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-03-18 12:17:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-18 12:17:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-03-18 12:17:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-18 12:17:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-03-18 12:17:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-18 12:17:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:17:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 4678 proven. 1762 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-03-18 12:17:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:17:58,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861433915] [2022-03-18 12:17:58,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861433915] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:17:58,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026692263] [2022-03-18 12:17:58,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:17:58,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:17:58,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:17:58,213 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:17:58,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-18 12:17:58,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2022-03-18 12:17:58,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:17:58,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 116 conjunts are in the unsatisfiable core [2022-03-18 12:17:58,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:18:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 4844 proven. 1596 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-03-18 12:18:01,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:18:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 4844 proven. 1596 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-03-18 12:18:01,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026692263] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:18:01,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:18:01,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 117, 117] total 177 [2022-03-18 12:18:01,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480197429] [2022-03-18 12:18:01,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:18:01,739 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2022-03-18 12:18:01,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:18:01,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2022-03-18 12:18:01,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6909, Invalid=24243, Unknown=0, NotChecked=0, Total=31152 [2022-03-18 12:18:01,741 INFO L87 Difference]: Start difference. First operand 464 states and 465 transitions. Second operand has 177 states, 177 states have (on average 1.694915254237288) internal successors, (300), 176 states have internal predecessors, (300), 115 states have call successors, (117), 3 states have call predecessors, (117), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2022-03-18 12:18:05,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:18:05,013 INFO L93 Difference]: Finished difference Result 644 states and 702 transitions. [2022-03-18 12:18:05,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-03-18 12:18:05,014 INFO L78 Accepts]: Start accepts. Automaton has has 177 states, 177 states have (on average 1.694915254237288) internal successors, (300), 176 states have internal predecessors, (300), 115 states have call successors, (117), 3 states have call predecessors, (117), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) Word has length 461 [2022-03-18 12:18:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:18:05,021 INFO L225 Difference]: With dead ends: 644 [2022-03-18 12:18:05,021 INFO L226 Difference]: Without dead ends: 465 [2022-03-18 12:18:05,024 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 976 SyntacticMatches, 1 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23585 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=15582, Invalid=69390, Unknown=0, NotChecked=0, Total=84972 [2022-03-18 12:18:05,024 INFO L912 BasicCegarLoop]: 68 mSDtfsCounter, 21 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 3458 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 3697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 12:18:05,024 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 145 Invalid, 3697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 3458 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 12:18:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-03-18 12:18:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2022-03-18 12:18:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 347 states have (on average 1.005763688760807) internal successors, (349), 348 states have internal predecessors, (349), 59 states have call successors, (59), 59 states have call predecessors, (59), 58 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2022-03-18 12:18:05,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 466 transitions. [2022-03-18 12:18:05,076 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 466 transitions. Word has length 461 [2022-03-18 12:18:05,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:18:05,076 INFO L478 AbstractCegarLoop]: Abstraction has 465 states and 466 transitions. [2022-03-18 12:18:05,077 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 177 states, 177 states have (on average 1.694915254237288) internal successors, (300), 176 states have internal predecessors, (300), 115 states have call successors, (117), 3 states have call predecessors, (117), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2022-03-18 12:18:05,077 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 466 transitions. [2022-03-18 12:18:05,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-03-18 12:18:05,078 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:18:05,078 INFO L500 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:18:05,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-03-18 12:18:05,291 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-03-18 12:18:05,291 INFO L403 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:18:05,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:18:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash -943252434, now seen corresponding path program 112 times [2022-03-18 12:18:05,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:18:05,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598917527] [2022-03-18 12:18:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:18:05,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:18:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:18:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:18:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:18:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:18:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:18:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:18:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:18:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:18:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:18:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:18:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:18:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:18:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:18:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:18:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:18:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:18:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:18:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:18:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:18:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:18:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:18:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:18:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:18:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:18:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:18:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:18:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:18:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:18:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:18:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:18:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:18:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:18:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:18:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:18:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-03-18 12:18:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-18 12:18:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-03-18 12:18:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-18 12:18:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-03-18 12:18:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-18 12:18:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-03-18 12:18:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-18 12:18:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-03-18 12:18:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-18 12:18:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-03-18 12:18:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-18 12:18:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-03-18 12:18:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-18 12:18:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-03-18 12:18:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-18 12:18:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-03-18 12:18:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-18 12:18:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-03-18 12:18:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-18 12:18:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-03-18 12:18:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-18 12:18:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-03-18 12:18:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12657 backedges. 1708 proven. 4789 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-03-18 12:18:06,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:18:06,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598917527] [2022-03-18 12:18:06,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598917527] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:18:06,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908554258] [2022-03-18 12:18:06,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:18:06,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:18:06,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:18:06,148 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:18:06,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-18 12:18:06,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:18:06,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:18:06,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 117 conjunts are in the unsatisfiable core [2022-03-18 12:18:06,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:18:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12657 backedges. 1765 proven. 4732 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-03-18 12:18:06,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:18:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12657 backedges. 1765 proven. 4732 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-03-18 12:18:07,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908554258] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:18:07,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:18:07,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 62] total 66 [2022-03-18 12:18:07,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823014923] [2022-03-18 12:18:07,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:18:07,212 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-03-18 12:18:07,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:18:07,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-03-18 12:18:07,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1785, Invalid=2505, Unknown=0, NotChecked=0, Total=4290 [2022-03-18 12:18:07,213 INFO L87 Difference]: Start difference. First operand 465 states and 466 transitions. Second operand has 66 states, 66 states have (on average 2.8181818181818183) internal successors, (186), 63 states have internal predecessors, (186), 58 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-03-18 12:18:08,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:18:08,180 INFO L93 Difference]: Finished difference Result 478 states and 480 transitions. [2022-03-18 12:18:08,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-18 12:18:08,180 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.8181818181818183) internal successors, (186), 63 states have internal predecessors, (186), 58 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 462 [2022-03-18 12:18:08,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:18:08,181 INFO L225 Difference]: With dead ends: 478 [2022-03-18 12:18:08,182 INFO L226 Difference]: Without dead ends: 476 [2022-03-18 12:18:08,183 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1218 GetRequests, 1090 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2801 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=5347, Invalid=10909, Unknown=0, NotChecked=0, Total=16256 [2022-03-18 12:18:08,183 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 150 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:18:08,183 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 45 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:18:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-03-18 12:18:08,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 472. [2022-03-18 12:18:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 352 states have (on average 1.0056818181818181) internal successors, (354), 353 states have internal predecessors, (354), 60 states have call successors, (60), 60 states have call predecessors, (60), 59 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-03-18 12:18:08,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 473 transitions. [2022-03-18 12:18:08,236 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 473 transitions. Word has length 462 [2022-03-18 12:18:08,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:18:08,236 INFO L478 AbstractCegarLoop]: Abstraction has 472 states and 473 transitions. [2022-03-18 12:18:08,236 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.8181818181818183) internal successors, (186), 63 states have internal predecessors, (186), 58 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-03-18 12:18:08,236 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 473 transitions. [2022-03-18 12:18:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-03-18 12:18:08,238 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:18:08,238 INFO L500 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:18:08,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-03-18 12:18:08,439 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:18:08,439 INFO L403 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:18:08,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:18:08,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1375864964, now seen corresponding path program 113 times [2022-03-18 12:18:08,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:18:08,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658571224] [2022-03-18 12:18:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:18:08,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:18:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:18:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-03-18 12:18:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:18:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:18:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:18:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:18:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:18:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:18:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:18:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:18:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:18:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:18:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:18:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:18:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:18:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:18:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:18:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:18:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:18:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:18:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:18:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:18:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:18:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:18:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:18:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:18:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:18:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:18:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:18:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:18:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:18:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:18:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:18:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:18:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-03-18 12:18:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-18 12:18:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-03-18 12:18:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-18 12:18:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-03-18 12:18:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-18 12:18:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-03-18 12:18:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-18 12:18:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-03-18 12:18:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-18 12:18:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-03-18 12:18:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-18 12:18:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-03-18 12:18:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-18 12:18:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-03-18 12:18:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-18 12:18:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-03-18 12:18:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-18 12:18:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-03-18 12:18:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-18 12:18:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-03-18 12:18:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-18 12:18:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-03-18 12:18:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-18 12:18:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 13053 backedges. 4847 proven. 1822 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-03-18 12:18:10,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:18:10,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658571224] [2022-03-18 12:18:10,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658571224] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:18:10,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196318072] [2022-03-18 12:18:10,796 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:18:10,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:18:10,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:18:10,798 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:18:10,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-03-18 12:18:11,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2022-03-18 12:18:11,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:18:11,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 118 conjunts are in the unsatisfiable core [2022-03-18 12:18:11,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:18:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 13053 backedges. 5016 proven. 1653 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-03-18 12:18:14,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:18:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 13053 backedges. 5016 proven. 1653 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-03-18 12:18:14,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196318072] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:18:14,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:18:14,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 119, 119] total 180 [2022-03-18 12:18:14,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901294281] [2022-03-18 12:18:14,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:18:14,455 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2022-03-18 12:18:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:18:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2022-03-18 12:18:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7146, Invalid=25074, Unknown=0, NotChecked=0, Total=32220 [2022-03-18 12:18:14,457 INFO L87 Difference]: Start difference. First operand 472 states and 473 transitions. Second operand has 180 states, 180 states have (on average 1.6944444444444444) internal successors, (305), 179 states have internal predecessors, (305), 117 states have call successors, (119), 3 states have call predecessors, (119), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2022-03-18 12:18:18,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:18:18,612 INFO L93 Difference]: Finished difference Result 655 states and 714 transitions. [2022-03-18 12:18:18,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-03-18 12:18:18,612 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 180 states have (on average 1.6944444444444444) internal successors, (305), 179 states have internal predecessors, (305), 117 states have call successors, (119), 3 states have call predecessors, (119), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) Word has length 469 [2022-03-18 12:18:18,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:18:18,613 INFO L225 Difference]: With dead ends: 655 [2022-03-18 12:18:18,613 INFO L226 Difference]: Without dead ends: 473 [2022-03-18 12:18:18,656 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1289 GetRequests, 993 SyntacticMatches, 1 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24405 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=16116, Invalid=71796, Unknown=0, NotChecked=0, Total=87912 [2022-03-18 12:18:18,656 INFO L912 BasicCegarLoop]: 69 mSDtfsCounter, 21 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 3888 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 4129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 3888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:18:18,657 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 161 Invalid, 4129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 3888 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 12:18:18,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-03-18 12:18:18,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2022-03-18 12:18:18,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 353 states have (on average 1.0056657223796035) internal successors, (355), 354 states have internal predecessors, (355), 60 states have call successors, (60), 60 states have call predecessors, (60), 59 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-03-18 12:18:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 474 transitions. [2022-03-18 12:18:18,715 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 474 transitions. Word has length 469 [2022-03-18 12:18:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:18:18,715 INFO L478 AbstractCegarLoop]: Abstraction has 473 states and 474 transitions. [2022-03-18 12:18:18,715 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 180 states have (on average 1.6944444444444444) internal successors, (305), 179 states have internal predecessors, (305), 117 states have call successors, (119), 3 states have call predecessors, (119), 1 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2022-03-18 12:18:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 474 transitions. [2022-03-18 12:18:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-03-18 12:18:18,717 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:18:18,717 INFO L500 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:18:18,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-03-18 12:18:18,935 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-03-18 12:18:18,935 INFO L403 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:18:18,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:18:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1523842380, now seen corresponding path program 114 times [2022-03-18 12:18:18,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:18:18,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593942550] [2022-03-18 12:18:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:18:18,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:18:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:18:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:18:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:18:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:18:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:18:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:18:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:18:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:18:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:18:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:18:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:18:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:18:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:18:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:18:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:18:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:18:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:18:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:18:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:18:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:18:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:18:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:18:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:18:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:18:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:18:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:18:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:18:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:18:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:18:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:18:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:18:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:18:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:18:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:18:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:18:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-03-18 12:18:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-18 12:18:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-03-18 12:18:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-18 12:18:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-03-18 12:18:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-18 12:18:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-03-18 12:18:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-18 12:18:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-03-18 12:18:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-18 12:18:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-03-18 12:18:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-18 12:18:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-03-18 12:18:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-18 12:18:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-03-18 12:18:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-18 12:18:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-03-18 12:18:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-18 12:18:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-03-18 12:18:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-18 12:18:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-03-18 12:18:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-18 12:18:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-03-18 12:18:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 13111 backedges. 1767 proven. 4960 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-03-18 12:18:20,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:18:20,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593942550] [2022-03-18 12:18:20,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593942550] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:18:20,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648223868] [2022-03-18 12:18:20,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:18:20,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:18:20,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:18:20,500 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:18:20,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-03-18 12:18:20,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2022-03-18 12:18:20,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:18:20,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 119 conjunts are in the unsatisfiable core [2022-03-18 12:18:20,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:18:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13111 backedges. 1825 proven. 4902 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-03-18 12:18:21,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:18:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 13111 backedges. 1825 proven. 4902 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-03-18 12:18:22,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648223868] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:18:22,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:18:22,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 67 [2022-03-18 12:18:22,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767329970] [2022-03-18 12:18:22,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:18:22,261 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-03-18 12:18:22,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:18:22,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-03-18 12:18:22,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1845, Invalid=2577, Unknown=0, NotChecked=0, Total=4422 [2022-03-18 12:18:22,262 INFO L87 Difference]: Start difference. First operand 473 states and 474 transitions. Second operand has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 64 states have internal predecessors, (189), 59 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-03-18 12:18:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:18:23,806 INFO L93 Difference]: Finished difference Result 486 states and 488 transitions. [2022-03-18 12:18:23,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-18 12:18:23,807 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 64 states have internal predecessors, (189), 59 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 470 [2022-03-18 12:18:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:18:23,808 INFO L225 Difference]: With dead ends: 486 [2022-03-18 12:18:23,808 INFO L226 Difference]: Without dead ends: 484 [2022-03-18 12:18:23,810 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1239 GetRequests, 1109 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2879 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5527, Invalid=11243, Unknown=0, NotChecked=0, Total=16770 [2022-03-18 12:18:23,810 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 141 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:18:23,810 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 65 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 12:18:23,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-03-18 12:18:23,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 480. [2022-03-18 12:18:23,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 358 states have (on average 1.005586592178771) internal successors, (360), 359 states have internal predecessors, (360), 61 states have call successors, (61), 61 states have call predecessors, (61), 60 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-03-18 12:18:23,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 481 transitions. [2022-03-18 12:18:23,867 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 481 transitions. Word has length 470 [2022-03-18 12:18:23,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:18:23,881 INFO L478 AbstractCegarLoop]: Abstraction has 480 states and 481 transitions. [2022-03-18 12:18:23,881 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 64 states have internal predecessors, (189), 59 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-03-18 12:18:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 481 transitions. [2022-03-18 12:18:23,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-03-18 12:18:23,883 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:18:23,883 INFO L500 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:18:23,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-03-18 12:18:24,083 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-03-18 12:18:24,084 INFO L403 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:18:24,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:18:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1907799642, now seen corresponding path program 115 times [2022-03-18 12:18:24,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:18:24,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534344179] [2022-03-18 12:18:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:18:24,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:18:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:18:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-03-18 12:18:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:18:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:18:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:18:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:18:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:18:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:18:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:18:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:18:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:18:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:18:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:18:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:18:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:18:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:18:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:18:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:18:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:18:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:18:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:18:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:18:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:18:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:18:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:18:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:18:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:18:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:18:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:18:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:18:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:18:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:18:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:18:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:18:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:18:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-03-18 12:18:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-18 12:18:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-03-18 12:18:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-18 12:18:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-03-18 12:18:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-18 12:18:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-03-18 12:18:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-18 12:18:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-03-18 12:18:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-18 12:18:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-03-18 12:18:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-18 12:18:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-03-18 12:18:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-18 12:18:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-03-18 12:18:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-18 12:18:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-03-18 12:18:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-18 12:18:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-03-18 12:18:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-18 12:18:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-03-18 12:18:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-18 12:18:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-03-18 12:18:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-18 12:18:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 13514 backedges. 5019 proven. 1883 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-03-18 12:18:27,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:18:27,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534344179] [2022-03-18 12:18:27,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534344179] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:18:27,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049964380] [2022-03-18 12:18:27,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:18:27,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:18:27,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:18:27,694 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:18:27,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-03-18 12:18:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:27,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 120 conjunts are in the unsatisfiable core [2022-03-18 12:18:27,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:18:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13514 backedges. 5191 proven. 1711 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-03-18 12:18:32,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:18:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13514 backedges. 5191 proven. 1711 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-03-18 12:18:33,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049964380] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:18:33,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:18:33,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 121, 121] total 183 [2022-03-18 12:18:33,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915853946] [2022-03-18 12:18:33,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:18:33,510 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 183 states [2022-03-18 12:18:33,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:18:33,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2022-03-18 12:18:33,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7387, Invalid=25919, Unknown=0, NotChecked=0, Total=33306 [2022-03-18 12:18:33,512 INFO L87 Difference]: Start difference. First operand 480 states and 481 transitions. Second operand has 183 states, 183 states have (on average 1.6939890710382515) internal successors, (310), 182 states have internal predecessors, (310), 119 states have call successors, (121), 3 states have call predecessors, (121), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2022-03-18 12:18:37,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:18:37,254 INFO L93 Difference]: Finished difference Result 666 states and 726 transitions. [2022-03-18 12:18:37,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-03-18 12:18:37,254 INFO L78 Accepts]: Start accepts. Automaton has has 183 states, 183 states have (on average 1.6939890710382515) internal successors, (310), 182 states have internal predecessors, (310), 119 states have call successors, (121), 3 states have call predecessors, (121), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) Word has length 477 [2022-03-18 12:18:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:18:37,256 INFO L225 Difference]: With dead ends: 666 [2022-03-18 12:18:37,256 INFO L226 Difference]: Without dead ends: 481 [2022-03-18 12:18:37,260 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1010 SyntacticMatches, 1 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25239 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=16659, Invalid=74243, Unknown=0, NotChecked=0, Total=90902 [2022-03-18 12:18:37,261 INFO L912 BasicCegarLoop]: 70 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:18:37,261 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 117 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 2178 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 12:18:37,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-03-18 12:18:37,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2022-03-18 12:18:37,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 359 states have (on average 1.0055710306406684) internal successors, (361), 360 states have internal predecessors, (361), 61 states have call successors, (61), 61 states have call predecessors, (61), 60 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-03-18 12:18:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 482 transitions. [2022-03-18 12:18:37,335 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 482 transitions. Word has length 477 [2022-03-18 12:18:37,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:18:37,335 INFO L478 AbstractCegarLoop]: Abstraction has 481 states and 482 transitions. [2022-03-18 12:18:37,335 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 183 states, 183 states have (on average 1.6939890710382515) internal successors, (310), 182 states have internal predecessors, (310), 119 states have call successors, (121), 3 states have call predecessors, (121), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2022-03-18 12:18:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 482 transitions. [2022-03-18 12:18:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-03-18 12:18:37,337 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:18:37,337 INFO L500 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:18:37,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-03-18 12:18:37,554 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:18:37,554 INFO L403 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:18:37,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:18:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1163785838, now seen corresponding path program 116 times [2022-03-18 12:18:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:18:37,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941462828] [2022-03-18 12:18:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:18:37,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:18:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:18:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:18:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:18:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:18:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:18:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:18:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:18:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:18:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:18:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:18:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:18:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:18:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:18:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:18:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:18:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:18:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:18:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:18:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:18:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:18:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:18:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:18:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:18:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:18:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:18:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:18:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:18:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:18:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:18:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:18:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:18:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:18:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:18:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:18:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:18:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:18:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-03-18 12:18:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-18 12:18:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-03-18 12:18:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-18 12:18:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-03-18 12:18:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-18 12:18:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-03-18 12:18:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-18 12:18:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-03-18 12:18:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-18 12:18:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-03-18 12:18:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-18 12:18:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-03-18 12:18:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-18 12:18:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-03-18 12:18:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-18 12:18:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-03-18 12:18:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-18 12:18:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-03-18 12:18:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-18 12:18:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-03-18 12:18:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-18 12:18:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-03-18 12:18:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13573 backedges. 1827 proven. 5134 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-03-18 12:18:38,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:18:38,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941462828] [2022-03-18 12:18:38,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941462828] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:18:38,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883027556] [2022-03-18 12:18:38,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:18:38,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:18:38,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:18:38,501 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:18:38,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-03-18 12:18:38,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:18:38,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:18:38,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 121 conjunts are in the unsatisfiable core [2022-03-18 12:18:38,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:18:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13573 backedges. 1886 proven. 5075 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-03-18 12:18:39,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:18:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13573 backedges. 1886 proven. 5075 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-03-18 12:18:39,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883027556] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:18:39,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:18:39,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 68 [2022-03-18 12:18:39,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864747701] [2022-03-18 12:18:39,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:18:39,538 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-03-18 12:18:39,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:18:39,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-03-18 12:18:39,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1906, Invalid=2650, Unknown=0, NotChecked=0, Total=4556 [2022-03-18 12:18:39,539 INFO L87 Difference]: Start difference. First operand 481 states and 482 transitions. Second operand has 68 states, 68 states have (on average 2.823529411764706) internal successors, (192), 65 states have internal predecessors, (192), 60 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-03-18 12:18:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:18:40,558 INFO L93 Difference]: Finished difference Result 494 states and 496 transitions. [2022-03-18 12:18:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-18 12:18:40,558 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.823529411764706) internal successors, (192), 65 states have internal predecessors, (192), 60 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 478 [2022-03-18 12:18:40,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:18:40,559 INFO L225 Difference]: With dead ends: 494 [2022-03-18 12:18:40,559 INFO L226 Difference]: Without dead ends: 492 [2022-03-18 12:18:40,561 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1260 GetRequests, 1128 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2958 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=5710, Invalid=11582, Unknown=0, NotChecked=0, Total=17292 [2022-03-18 12:18:40,561 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 151 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:18:40,561 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 70 Invalid, 1671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:18:40,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-03-18 12:18:40,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 488. [2022-03-18 12:18:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 364 states have (on average 1.0054945054945055) internal successors, (366), 365 states have internal predecessors, (366), 62 states have call successors, (62), 62 states have call predecessors, (62), 61 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-03-18 12:18:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 489 transitions. [2022-03-18 12:18:40,622 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 489 transitions. Word has length 478 [2022-03-18 12:18:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:18:40,622 INFO L478 AbstractCegarLoop]: Abstraction has 488 states and 489 transitions. [2022-03-18 12:18:40,622 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.823529411764706) internal successors, (192), 65 states have internal predecessors, (192), 60 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-03-18 12:18:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 489 transitions. [2022-03-18 12:18:40,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-03-18 12:18:40,624 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:18:40,624 INFO L500 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:18:40,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-03-18 12:18:40,841 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:18:40,842 INFO L403 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:18:40,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:18:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash 942483012, now seen corresponding path program 117 times [2022-03-18 12:18:40,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:18:40,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644925776] [2022-03-18 12:18:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:18:40,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:18:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:18:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-03-18 12:18:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:18:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:18:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:18:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:18:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:18:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:18:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:18:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:18:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:18:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:18:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:18:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:18:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:18:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:18:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:18:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:18:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:18:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:18:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:18:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:18:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:18:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:18:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:18:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:18:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:18:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:18:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:18:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:18:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:18:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:18:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:18:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:18:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:18:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:18:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-03-18 12:18:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-18 12:18:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-03-18 12:18:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-18 12:18:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-03-18 12:18:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-18 12:18:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-03-18 12:18:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-18 12:18:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-03-18 12:18:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-18 12:18:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-03-18 12:18:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-18 12:18:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-03-18 12:18:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-18 12:18:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-03-18 12:18:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-18 12:18:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-03-18 12:18:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-18 12:18:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-03-18 12:18:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-18 12:18:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-03-18 12:18:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-18 12:18:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-03-18 12:18:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-18 12:18:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13983 backedges. 5194 proven. 1945 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-03-18 12:18:43,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:18:43,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644925776] [2022-03-18 12:18:43,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644925776] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:18:43,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624228310] [2022-03-18 12:18:43,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:18:43,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:18:43,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:18:43,142 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:18:43,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-03-18 12:18:43,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2022-03-18 12:18:43,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:18:43,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 122 conjunts are in the unsatisfiable core [2022-03-18 12:18:43,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:18:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13983 backedges. 5369 proven. 1770 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-03-18 12:18:46,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:18:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 13983 backedges. 5369 proven. 1770 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-03-18 12:18:47,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624228310] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:18:47,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:18:47,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 123, 123] total 186 [2022-03-18 12:18:47,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460007287] [2022-03-18 12:18:47,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:18:47,237 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 186 states [2022-03-18 12:18:47,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:18:47,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2022-03-18 12:18:47,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7632, Invalid=26778, Unknown=0, NotChecked=0, Total=34410 [2022-03-18 12:18:47,239 INFO L87 Difference]: Start difference. First operand 488 states and 489 transitions. Second operand has 186 states, 186 states have (on average 1.6935483870967742) internal successors, (315), 185 states have internal predecessors, (315), 121 states have call successors, (123), 3 states have call predecessors, (123), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2022-03-18 12:18:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:18:51,070 INFO L93 Difference]: Finished difference Result 677 states and 738 transitions. [2022-03-18 12:18:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-03-18 12:18:51,071 INFO L78 Accepts]: Start accepts. Automaton has has 186 states, 186 states have (on average 1.6935483870967742) internal successors, (315), 185 states have internal predecessors, (315), 121 states have call successors, (123), 3 states have call predecessors, (123), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) Word has length 485 [2022-03-18 12:18:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:18:51,072 INFO L225 Difference]: With dead ends: 677 [2022-03-18 12:18:51,072 INFO L226 Difference]: Without dead ends: 489 [2022-03-18 12:18:51,075 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 1027 SyntacticMatches, 1 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26087 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=17211, Invalid=76731, Unknown=0, NotChecked=0, Total=93942 [2022-03-18 12:18:51,075 INFO L912 BasicCegarLoop]: 71 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 3167 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 3167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 12:18:51,075 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 128 Invalid, 3421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 3167 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 12:18:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-03-18 12:18:51,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-03-18 12:18:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 365 states have (on average 1.0054794520547945) internal successors, (367), 366 states have internal predecessors, (367), 62 states have call successors, (62), 62 states have call predecessors, (62), 61 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-03-18 12:18:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 490 transitions. [2022-03-18 12:18:51,131 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 490 transitions. Word has length 485 [2022-03-18 12:18:51,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:18:51,131 INFO L478 AbstractCegarLoop]: Abstraction has 489 states and 490 transitions. [2022-03-18 12:18:51,132 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 186 states, 186 states have (on average 1.6935483870967742) internal successors, (315), 185 states have internal predecessors, (315), 121 states have call successors, (123), 3 states have call predecessors, (123), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2022-03-18 12:18:51,132 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 490 transitions. [2022-03-18 12:18:51,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-03-18 12:18:51,133 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:18:51,133 INFO L500 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:18:51,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-03-18 12:18:51,347 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-03-18 12:18:51,347 INFO L403 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:18:51,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:18:51,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1800178444, now seen corresponding path program 118 times [2022-03-18 12:18:51,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:18:51,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217770005] [2022-03-18 12:18:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:18:51,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:18:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:18:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:18:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:18:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:18:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:18:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:18:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:18:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:18:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:18:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:18:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:18:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:18:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:18:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:18:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:18:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:18:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:18:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:18:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:18:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:18:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:18:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:18:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:18:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:18:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:18:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:18:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:18:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:18:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:18:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:18:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:18:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:18:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:18:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:18:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:18:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:18:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:18:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-03-18 12:18:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-18 12:18:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-03-18 12:18:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-18 12:18:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-03-18 12:18:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-18 12:18:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-03-18 12:18:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-18 12:18:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-03-18 12:18:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-18 12:18:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-03-18 12:18:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-18 12:18:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-03-18 12:18:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-18 12:18:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-03-18 12:18:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-18 12:18:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-03-18 12:18:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-18 12:18:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-03-18 12:18:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-18 12:18:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-03-18 12:18:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-18 12:18:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-03-18 12:18:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 14043 backedges. 1888 proven. 5311 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-03-18 12:18:52,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:18:52,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217770005] [2022-03-18 12:18:52,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217770005] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:18:52,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097605395] [2022-03-18 12:18:52,333 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:18:52,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:18:52,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:18:52,335 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:18:52,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-03-18 12:18:52,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:18:52,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:18:52,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 123 conjunts are in the unsatisfiable core [2022-03-18 12:18:52,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:18:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 14043 backedges. 1948 proven. 5251 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-03-18 12:18:52,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:18:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 14043 backedges. 1948 proven. 5251 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-03-18 12:18:53,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097605395] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:18:53,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:18:53,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 69 [2022-03-18 12:18:53,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234911839] [2022-03-18 12:18:53,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:18:53,383 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-18 12:18:53,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:18:53,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-18 12:18:53,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1968, Invalid=2724, Unknown=0, NotChecked=0, Total=4692 [2022-03-18 12:18:53,384 INFO L87 Difference]: Start difference. First operand 489 states and 490 transitions. Second operand has 69 states, 69 states have (on average 2.8260869565217392) internal successors, (195), 66 states have internal predecessors, (195), 61 states have call successors, (64), 4 states have call predecessors, (64), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-03-18 12:18:54,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:18:54,542 INFO L93 Difference]: Finished difference Result 502 states and 504 transitions. [2022-03-18 12:18:54,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-18 12:18:54,543 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.8260869565217392) internal successors, (195), 66 states have internal predecessors, (195), 61 states have call successors, (64), 4 states have call predecessors, (64), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Word has length 486 [2022-03-18 12:18:54,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:18:54,544 INFO L225 Difference]: With dead ends: 502 [2022-03-18 12:18:54,544 INFO L226 Difference]: Without dead ends: 500 [2022-03-18 12:18:54,546 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1281 GetRequests, 1147 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3038 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=5896, Invalid=11926, Unknown=0, NotChecked=0, Total=17822 [2022-03-18 12:18:54,546 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 149 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:18:54,547 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 60 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:18:54,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-03-18 12:18:54,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 496. [2022-03-18 12:18:54,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 370 states have (on average 1.0054054054054054) internal successors, (372), 371 states have internal predecessors, (372), 63 states have call successors, (63), 63 states have call predecessors, (63), 62 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-03-18 12:18:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 497 transitions. [2022-03-18 12:18:54,627 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 497 transitions. Word has length 486 [2022-03-18 12:18:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:18:54,627 INFO L478 AbstractCegarLoop]: Abstraction has 496 states and 497 transitions. [2022-03-18 12:18:54,627 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.8260869565217392) internal successors, (195), 66 states have internal predecessors, (195), 61 states have call successors, (64), 4 states have call predecessors, (64), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-03-18 12:18:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 497 transitions. [2022-03-18 12:18:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2022-03-18 12:18:54,629 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:18:54,629 INFO L500 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:18:54,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-03-18 12:18:54,847 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2022-03-18 12:18:54,847 INFO L403 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:18:54,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:18:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1969865702, now seen corresponding path program 119 times [2022-03-18 12:18:54,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:18:54,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549792438] [2022-03-18 12:18:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:18:54,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:18:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:18:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 12:18:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:18:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:18:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:18:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:18:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:18:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:18:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:18:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:18:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:18:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:18:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:18:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:18:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:18:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:18:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:18:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:18:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:18:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:18:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:18:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:18:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:18:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:18:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:18:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:18:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:18:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:18:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:18:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:18:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:18:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:18:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:18:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:18:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:18:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:18:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:18:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-03-18 12:18:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-18 12:18:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-03-18 12:18:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-18 12:18:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-03-18 12:18:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-18 12:18:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-03-18 12:18:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-18 12:18:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-03-18 12:18:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-18 12:18:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-03-18 12:18:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-18 12:18:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-03-18 12:18:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-18 12:18:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-03-18 12:18:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-18 12:18:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-03-18 12:18:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-18 12:18:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-03-18 12:18:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-18 12:18:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-03-18 12:18:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-18 12:18:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-03-18 12:18:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-18 12:18:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:18:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 14460 backedges. 5372 proven. 2008 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-03-18 12:18:57,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:18:57,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549792438] [2022-03-18 12:18:57,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549792438] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:18:57,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252357449] [2022-03-18 12:18:57,422 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:18:57,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:18:57,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:18:57,424 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:18:57,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-03-18 12:18:57,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2022-03-18 12:18:57,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:18:57,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 124 conjunts are in the unsatisfiable core [2022-03-18 12:18:57,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:19:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 14460 backedges. 5550 proven. 1830 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-03-18 12:19:01,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:19:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14460 backedges. 5550 proven. 1830 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-03-18 12:19:01,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252357449] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:19:01,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:19:01,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 125, 125] total 189 [2022-03-18 12:19:01,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606730774] [2022-03-18 12:19:01,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:19:01,786 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 189 states [2022-03-18 12:19:01,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:19:01,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2022-03-18 12:19:01,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7881, Invalid=27651, Unknown=0, NotChecked=0, Total=35532 [2022-03-18 12:19:01,788 INFO L87 Difference]: Start difference. First operand 496 states and 497 transitions. Second operand has 189 states, 189 states have (on average 1.693121693121693) internal successors, (320), 188 states have internal predecessors, (320), 123 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2022-03-18 12:19:05,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:19:05,116 INFO L93 Difference]: Finished difference Result 688 states and 750 transitions. [2022-03-18 12:19:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-18 12:19:05,117 INFO L78 Accepts]: Start accepts. Automaton has has 189 states, 189 states have (on average 1.693121693121693) internal successors, (320), 188 states have internal predecessors, (320), 123 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) Word has length 493 [2022-03-18 12:19:05,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:19:05,118 INFO L225 Difference]: With dead ends: 688 [2022-03-18 12:19:05,118 INFO L226 Difference]: Without dead ends: 497 [2022-03-18 12:19:05,122 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1355 GetRequests, 1044 SyntacticMatches, 1 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26949 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=17772, Invalid=79260, Unknown=0, NotChecked=0, Total=97032 [2022-03-18 12:19:05,122 INFO L912 BasicCegarLoop]: 72 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:19:05,122 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 109 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 12:19:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-03-18 12:19:05,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2022-03-18 12:19:05,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 371 states have (on average 1.005390835579515) internal successors, (373), 372 states have internal predecessors, (373), 63 states have call successors, (63), 63 states have call predecessors, (63), 62 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-03-18 12:19:05,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 498 transitions. [2022-03-18 12:19:05,211 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 498 transitions. Word has length 493 [2022-03-18 12:19:05,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:19:05,211 INFO L478 AbstractCegarLoop]: Abstraction has 497 states and 498 transitions. [2022-03-18 12:19:05,211 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 189 states, 189 states have (on average 1.693121693121693) internal successors, (320), 188 states have internal predecessors, (320), 123 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2022-03-18 12:19:05,211 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 498 transitions. [2022-03-18 12:19:05,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-03-18 12:19:05,213 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:19:05,213 INFO L500 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:19:05,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-03-18 12:19:05,415 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:19:05,416 INFO L403 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:19:05,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:19:05,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1436819282, now seen corresponding path program 120 times [2022-03-18 12:19:05,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:19:05,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373511742] [2022-03-18 12:19:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:19:05,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:19:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:19:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:19:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:19:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:19:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:19:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:19:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:19:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:19:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:19:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:19:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:19:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:19:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:19:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:19:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:19:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:19:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:19:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:19:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:19:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:19:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:19:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:19:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:19:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:19:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:19:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:19:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:19:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:19:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:19:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:19:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:19:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:19:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:19:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:19:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:19:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:19:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:19:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:19:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-03-18 12:19:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-18 12:19:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-03-18 12:19:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-18 12:19:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-03-18 12:19:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-18 12:19:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-03-18 12:19:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-18 12:19:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-03-18 12:19:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-18 12:19:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-03-18 12:19:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-18 12:19:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-03-18 12:19:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-18 12:19:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-03-18 12:19:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-18 12:19:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-03-18 12:19:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-18 12:19:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-03-18 12:19:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-18 12:19:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-03-18 12:19:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-18 12:19:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-03-18 12:19:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 1950 proven. 5491 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-03-18 12:19:06,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:19:06,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373511742] [2022-03-18 12:19:06,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373511742] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:19:06,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818277869] [2022-03-18 12:19:06,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:19:06,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:19:06,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:19:06,393 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:19:06,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-03-18 12:19:06,650 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2022-03-18 12:19:06,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:19:06,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-18 12:19:06,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:19:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 2011 proven. 5430 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-03-18 12:19:07,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:19:07,536 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 2011 proven. 5430 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-03-18 12:19:07,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818277869] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:19:07,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:19:07,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 70 [2022-03-18 12:19:07,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403048070] [2022-03-18 12:19:07,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:19:07,537 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-03-18 12:19:07,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:19:07,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-03-18 12:19:07,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2031, Invalid=2799, Unknown=0, NotChecked=0, Total=4830 [2022-03-18 12:19:07,538 INFO L87 Difference]: Start difference. First operand 497 states and 498 transitions. Second operand has 70 states, 70 states have (on average 2.8285714285714287) internal successors, (198), 67 states have internal predecessors, (198), 62 states have call successors, (65), 4 states have call predecessors, (65), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-03-18 12:19:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:19:08,786 INFO L93 Difference]: Finished difference Result 510 states and 512 transitions. [2022-03-18 12:19:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-18 12:19:08,787 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.8285714285714287) internal successors, (198), 67 states have internal predecessors, (198), 62 states have call successors, (65), 4 states have call predecessors, (65), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Word has length 494 [2022-03-18 12:19:08,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:19:08,788 INFO L225 Difference]: With dead ends: 510 [2022-03-18 12:19:08,788 INFO L226 Difference]: Without dead ends: 508 [2022-03-18 12:19:08,789 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1302 GetRequests, 1166 SyntacticMatches, 2 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=6085, Invalid=12275, Unknown=0, NotChecked=0, Total=18360 [2022-03-18 12:19:08,789 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 156 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:19:08,789 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 70 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:19:08,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-03-18 12:19:08,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 504. [2022-03-18 12:19:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 376 states have (on average 1.0053191489361701) internal successors, (378), 377 states have internal predecessors, (378), 64 states have call successors, (64), 64 states have call predecessors, (64), 63 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-03-18 12:19:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 505 transitions. [2022-03-18 12:19:08,847 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 505 transitions. Word has length 494 [2022-03-18 12:19:08,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:19:08,848 INFO L478 AbstractCegarLoop]: Abstraction has 504 states and 505 transitions. [2022-03-18 12:19:08,848 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.8285714285714287) internal successors, (198), 67 states have internal predecessors, (198), 62 states have call successors, (65), 4 states have call predecessors, (65), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-03-18 12:19:08,848 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 505 transitions. [2022-03-18 12:19:08,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-03-18 12:19:08,850 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:19:08,850 INFO L500 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:19:08,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-03-18 12:19:09,068 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:19:09,068 INFO L403 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:19:09,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:19:09,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2011116548, now seen corresponding path program 121 times [2022-03-18 12:19:09,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:19:09,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886191995] [2022-03-18 12:19:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:19:09,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:19:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:19:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-03-18 12:19:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:19:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:19:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:19:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:19:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:19:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:19:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:19:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:19:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:19:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:19:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:19:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:19:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:19:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:19:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:19:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:19:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:19:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:19:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:19:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:19:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:19:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:19:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:19:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:19:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:19:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:19:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:19:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:19:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:19:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:19:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:19:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:19:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:19:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:19:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:19:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:19:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-03-18 12:19:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-18 12:19:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-03-18 12:19:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-18 12:19:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-03-18 12:19:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-18 12:19:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-03-18 12:19:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-18 12:19:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-03-18 12:19:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-18 12:19:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-03-18 12:19:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-18 12:19:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-03-18 12:19:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-18 12:19:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-03-18 12:19:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-18 12:19:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-03-18 12:19:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-18 12:19:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-03-18 12:19:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-18 12:19:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-03-18 12:19:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-18 12:19:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-03-18 12:19:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-18 12:19:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 14945 backedges. 5553 proven. 2072 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-03-18 12:19:11,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:19:11,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886191995] [2022-03-18 12:19:11,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886191995] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:19:11,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617319292] [2022-03-18 12:19:11,877 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:19:11,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:19:11,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:19:11,878 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:19:11,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-03-18 12:19:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:12,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 126 conjunts are in the unsatisfiable core [2022-03-18 12:19:12,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:19:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 14945 backedges. 5734 proven. 1891 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-03-18 12:19:16,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:19:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 14945 backedges. 5734 proven. 1891 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-03-18 12:19:17,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617319292] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:19:17,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:19:17,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 127, 127] total 192 [2022-03-18 12:19:17,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846686904] [2022-03-18 12:19:17,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:19:17,056 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-03-18 12:19:17,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:19:17,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-03-18 12:19:17,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8134, Invalid=28538, Unknown=0, NotChecked=0, Total=36672 [2022-03-18 12:19:17,060 INFO L87 Difference]: Start difference. First operand 504 states and 505 transitions. Second operand has 192 states, 192 states have (on average 1.6927083333333333) internal successors, (325), 191 states have internal predecessors, (325), 125 states have call successors, (127), 3 states have call predecessors, (127), 1 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2022-03-18 12:19:20,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:19:20,689 INFO L93 Difference]: Finished difference Result 699 states and 762 transitions. [2022-03-18 12:19:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-03-18 12:19:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.6927083333333333) internal successors, (325), 191 states have internal predecessors, (325), 125 states have call successors, (127), 3 states have call predecessors, (127), 1 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) Word has length 501 [2022-03-18 12:19:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:19:20,691 INFO L225 Difference]: With dead ends: 699 [2022-03-18 12:19:20,691 INFO L226 Difference]: Without dead ends: 505 [2022-03-18 12:19:20,695 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1377 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27825 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=18342, Invalid=81830, Unknown=0, NotChecked=0, Total=100172 [2022-03-18 12:19:20,696 INFO L912 BasicCegarLoop]: 73 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 12:19:20,696 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 130 Invalid, 3230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 12:19:20,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-03-18 12:19:20,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2022-03-18 12:19:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 377 states have (on average 1.0053050397877985) internal successors, (379), 378 states have internal predecessors, (379), 64 states have call successors, (64), 64 states have call predecessors, (64), 63 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-03-18 12:19:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 506 transitions. [2022-03-18 12:19:20,755 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 506 transitions. Word has length 501 [2022-03-18 12:19:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:19:20,755 INFO L478 AbstractCegarLoop]: Abstraction has 505 states and 506 transitions. [2022-03-18 12:19:20,755 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.6927083333333333) internal successors, (325), 191 states have internal predecessors, (325), 125 states have call successors, (127), 3 states have call predecessors, (127), 1 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2022-03-18 12:19:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 506 transitions. [2022-03-18 12:19:20,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2022-03-18 12:19:20,757 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:19:20,758 INFO L500 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:19:20,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-03-18 12:19:20,971 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:19:20,971 INFO L403 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:19:20,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:19:20,972 INFO L85 PathProgramCache]: Analyzing trace with hash -328464180, now seen corresponding path program 122 times [2022-03-18 12:19:20,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:19:20,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565355356] [2022-03-18 12:19:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:19:20,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:19:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:19:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:19:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:19:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:19:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:19:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:19:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:19:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:19:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:19:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:19:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:19:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:19:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:19:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:19:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:19:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:19:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:19:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:19:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:19:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:19:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:19:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:19:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:19:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:19:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:19:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:19:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:19:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:19:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:19:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:19:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:19:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-03-18 12:19:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-18 12:19:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-03-18 12:19:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-18 12:19:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-03-18 12:19:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-18 12:19:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-03-18 12:19:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-18 12:19:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-03-18 12:19:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-18 12:19:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-03-18 12:19:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-18 12:19:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-03-18 12:19:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-18 12:19:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-03-18 12:19:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-18 12:19:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-03-18 12:19:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-18 12:19:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-03-18 12:19:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-18 12:19:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-03-18 12:19:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-18 12:19:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-03-18 12:19:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-18 12:19:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-03-18 12:19:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-18 12:19:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-03-18 12:19:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-18 12:19:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-03-18 12:19:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-18 12:19:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-03-18 12:19:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 15007 backedges. 2013 proven. 5674 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-03-18 12:19:21,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:19:21,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565355356] [2022-03-18 12:19:21,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565355356] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:19:21,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376064238] [2022-03-18 12:19:21,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:19:21,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:19:21,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:19:21,942 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:19:21,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-03-18 12:19:22,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:19:22,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:19:22,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 127 conjunts are in the unsatisfiable core [2022-03-18 12:19:22,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:19:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15007 backedges. 2075 proven. 5612 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-03-18 12:19:22,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:19:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 15007 backedges. 2075 proven. 5612 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-03-18 12:19:22,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376064238] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:19:22,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:19:22,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 71 [2022-03-18 12:19:22,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846384764] [2022-03-18 12:19:22,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:19:22,971 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-03-18 12:19:22,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:19:22,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-03-18 12:19:22,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2095, Invalid=2875, Unknown=0, NotChecked=0, Total=4970 [2022-03-18 12:19:22,972 INFO L87 Difference]: Start difference. First operand 505 states and 506 transitions. Second operand has 71 states, 71 states have (on average 2.8309859154929575) internal successors, (201), 68 states have internal predecessors, (201), 63 states have call successors, (66), 4 states have call predecessors, (66), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-03-18 12:19:24,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:19:24,021 INFO L93 Difference]: Finished difference Result 518 states and 520 transitions. [2022-03-18 12:19:24,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-18 12:19:24,021 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.8309859154929575) internal successors, (201), 68 states have internal predecessors, (201), 63 states have call successors, (66), 4 states have call predecessors, (66), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 502 [2022-03-18 12:19:24,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:19:24,022 INFO L225 Difference]: With dead ends: 518 [2022-03-18 12:19:24,022 INFO L226 Difference]: Without dead ends: 516 [2022-03-18 12:19:24,024 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1323 GetRequests, 1185 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3201 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=6277, Invalid=12629, Unknown=0, NotChecked=0, Total=18906 [2022-03-18 12:19:24,024 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 158 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:19:24,024 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 55 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:19:24,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-03-18 12:19:24,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 512. [2022-03-18 12:19:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 382 states have (on average 1.0052356020942408) internal successors, (384), 383 states have internal predecessors, (384), 65 states have call successors, (65), 65 states have call predecessors, (65), 64 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-03-18 12:19:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 513 transitions. [2022-03-18 12:19:24,084 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 513 transitions. Word has length 502 [2022-03-18 12:19:24,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:19:24,084 INFO L478 AbstractCegarLoop]: Abstraction has 512 states and 513 transitions. [2022-03-18 12:19:24,085 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.8309859154929575) internal successors, (201), 68 states have internal predecessors, (201), 63 states have call successors, (66), 4 states have call predecessors, (66), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-03-18 12:19:24,085 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 513 transitions. [2022-03-18 12:19:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-03-18 12:19:24,086 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:19:24,086 INFO L500 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:19:24,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-03-18 12:19:24,304 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-03-18 12:19:24,304 INFO L403 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:19:24,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:19:24,304 INFO L85 PathProgramCache]: Analyzing trace with hash 523587110, now seen corresponding path program 123 times [2022-03-18 12:19:24,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:19:24,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259483819] [2022-03-18 12:19:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:19:24,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:19:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:19:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-03-18 12:19:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:19:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:19:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:19:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:19:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:19:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:19:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:19:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:19:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:19:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:19:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:19:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:19:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:19:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:19:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:19:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:19:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:19:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:19:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:19:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:19:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:19:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:19:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:19:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:19:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:19:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:19:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:19:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:19:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:19:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-03-18 12:19:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-18 12:19:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-03-18 12:19:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-18 12:19:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-03-18 12:19:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-18 12:19:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-03-18 12:19:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-18 12:19:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-03-18 12:19:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-18 12:19:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-03-18 12:19:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-18 12:19:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-03-18 12:19:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-18 12:19:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-03-18 12:19:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-18 12:19:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-03-18 12:19:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-18 12:19:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-03-18 12:19:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-18 12:19:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-03-18 12:19:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-18 12:19:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-03-18 12:19:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-18 12:19:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-03-18 12:19:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-18 12:19:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-03-18 12:19:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-18 12:19:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-03-18 12:19:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-18 12:19:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-03-18 12:19:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-03-18 12:19:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 15438 backedges. 5737 proven. 2137 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-03-18 12:19:28,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:19:28,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259483819] [2022-03-18 12:19:28,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259483819] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:19:28,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890893725] [2022-03-18 12:19:28,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:19:28,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:19:28,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:19:28,760 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:19:28,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-03-18 12:19:29,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2022-03-18 12:19:29,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:19:29,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 128 conjunts are in the unsatisfiable core [2022-03-18 12:19:29,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:19:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15438 backedges. 5921 proven. 1953 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-03-18 12:19:34,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:19:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 15438 backedges. 5921 proven. 1953 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-03-18 12:19:35,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890893725] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:19:35,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:19:35,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 129, 129] total 195 [2022-03-18 12:19:35,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102724606] [2022-03-18 12:19:35,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:19:35,439 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 195 states [2022-03-18 12:19:35,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:19:35,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2022-03-18 12:19:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8391, Invalid=29439, Unknown=0, NotChecked=0, Total=37830 [2022-03-18 12:19:35,442 INFO L87 Difference]: Start difference. First operand 512 states and 513 transitions. Second operand has 195 states, 195 states have (on average 1.6923076923076923) internal successors, (330), 194 states have internal predecessors, (330), 127 states have call successors, (129), 3 states have call predecessors, (129), 1 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2022-03-18 12:19:39,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:19:39,307 INFO L93 Difference]: Finished difference Result 710 states and 774 transitions. [2022-03-18 12:19:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-03-18 12:19:39,307 INFO L78 Accepts]: Start accepts. Automaton has has 195 states, 195 states have (on average 1.6923076923076923) internal successors, (330), 194 states have internal predecessors, (330), 127 states have call successors, (129), 3 states have call predecessors, (129), 1 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) Word has length 509 [2022-03-18 12:19:39,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:19:39,309 INFO L225 Difference]: With dead ends: 710 [2022-03-18 12:19:39,309 INFO L226 Difference]: Without dead ends: 513 [2022-03-18 12:19:39,313 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1399 GetRequests, 1078 SyntacticMatches, 1 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28715 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=18921, Invalid=84441, Unknown=0, NotChecked=0, Total=103362 [2022-03-18 12:19:39,313 INFO L912 BasicCegarLoop]: 74 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 12:19:39,313 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 131 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 12:19:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-03-18 12:19:39,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2022-03-18 12:19:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 383 states have (on average 1.0052219321148825) internal successors, (385), 384 states have internal predecessors, (385), 65 states have call successors, (65), 65 states have call predecessors, (65), 64 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-03-18 12:19:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 514 transitions. [2022-03-18 12:19:39,382 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 514 transitions. Word has length 509 [2022-03-18 12:19:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:19:39,382 INFO L478 AbstractCegarLoop]: Abstraction has 513 states and 514 transitions. [2022-03-18 12:19:39,382 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 195 states, 195 states have (on average 1.6923076923076923) internal successors, (330), 194 states have internal predecessors, (330), 127 states have call successors, (129), 3 states have call predecessors, (129), 1 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2022-03-18 12:19:39,383 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 514 transitions. [2022-03-18 12:19:39,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2022-03-18 12:19:39,385 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:19:39,385 INFO L500 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:19:39,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-03-18 12:19:39,591 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-03-18 12:19:39,591 INFO L403 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:19:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:19:39,591 INFO L85 PathProgramCache]: Analyzing trace with hash -920331538, now seen corresponding path program 124 times [2022-03-18 12:19:39,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:19:39,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906155558] [2022-03-18 12:19:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:19:39,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:19:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:19:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:19:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:19:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:19:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:19:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:19:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:19:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:19:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:19:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:19:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:19:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:19:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:19:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:19:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:19:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:19:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:19:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:19:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:19:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:19:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:19:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:19:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:19:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:19:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:19:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:19:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:19:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:19:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:19:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:19:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:19:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:19:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-03-18 12:19:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-18 12:19:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-03-18 12:19:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-18 12:19:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-03-18 12:19:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-18 12:19:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-03-18 12:19:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-18 12:19:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-03-18 12:19:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-18 12:19:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-03-18 12:19:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-18 12:19:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-03-18 12:19:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-18 12:19:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-03-18 12:19:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-18 12:19:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-03-18 12:19:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-18 12:19:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-03-18 12:19:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-18 12:19:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-03-18 12:19:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-18 12:19:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-03-18 12:19:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-18 12:19:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-03-18 12:19:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-18 12:19:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-03-18 12:19:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-18 12:19:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-03-18 12:19:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-18 12:19:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-03-18 12:19:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 15501 backedges. 2077 proven. 5860 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-03-18 12:19:40,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:19:40,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906155558] [2022-03-18 12:19:40,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906155558] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:19:40,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670560410] [2022-03-18 12:19:40,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:19:40,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:19:40,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:19:40,947 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:19:40,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-03-18 12:19:41,151 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:19:41,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:19:41,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 129 conjunts are in the unsatisfiable core [2022-03-18 12:19:41,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:19:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 15501 backedges. 2140 proven. 5797 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-03-18 12:19:42,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:19:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15501 backedges. 2140 proven. 5797 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-03-18 12:19:42,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670560410] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:19:42,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:19:42,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 68] total 72 [2022-03-18 12:19:42,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408823566] [2022-03-18 12:19:42,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:19:42,911 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-03-18 12:19:42,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:19:42,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-03-18 12:19:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2160, Invalid=2952, Unknown=0, NotChecked=0, Total=5112 [2022-03-18 12:19:42,912 INFO L87 Difference]: Start difference. First operand 513 states and 514 transitions. Second operand has 72 states, 72 states have (on average 2.8333333333333335) internal successors, (204), 69 states have internal predecessors, (204), 64 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-03-18 12:19:44,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:19:44,977 INFO L93 Difference]: Finished difference Result 526 states and 528 transitions. [2022-03-18 12:19:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-18 12:19:44,977 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.8333333333333335) internal successors, (204), 69 states have internal predecessors, (204), 64 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Word has length 510 [2022-03-18 12:19:44,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:19:44,979 INFO L225 Difference]: With dead ends: 526 [2022-03-18 12:19:44,979 INFO L226 Difference]: Without dead ends: 524 [2022-03-18 12:19:44,980 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1204 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3284 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=6472, Invalid=12988, Unknown=0, NotChecked=0, Total=19460 [2022-03-18 12:19:44,980 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 151 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 12:19:44,980 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 65 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 12:19:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-03-18 12:19:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 520. [2022-03-18 12:19:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 388 states have (on average 1.0051546391752577) internal successors, (390), 389 states have internal predecessors, (390), 66 states have call successors, (66), 66 states have call predecessors, (66), 65 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-03-18 12:19:45,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 521 transitions. [2022-03-18 12:19:45,061 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 521 transitions. Word has length 510 [2022-03-18 12:19:45,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:19:45,062 INFO L478 AbstractCegarLoop]: Abstraction has 520 states and 521 transitions. [2022-03-18 12:19:45,062 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.8333333333333335) internal successors, (204), 69 states have internal predecessors, (204), 64 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-03-18 12:19:45,062 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 521 transitions. [2022-03-18 12:19:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-03-18 12:19:45,064 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:19:45,064 INFO L500 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:19:45,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-03-18 12:19:45,289 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-03-18 12:19:45,290 INFO L403 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:19:45,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:19:45,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2043399740, now seen corresponding path program 125 times [2022-03-18 12:19:45,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:19:45,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273179242] [2022-03-18 12:19:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:19:45,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:19:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:19:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-03-18 12:19:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:19:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:19:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:19:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:19:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:19:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:19:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:19:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:19:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:19:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:19:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:19:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:19:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:19:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:19:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:19:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:19:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:19:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:19:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:19:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:19:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:19:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:19:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:19:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:19:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:19:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:19:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:19:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:19:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:19:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:19:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-03-18 12:19:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-18 12:19:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-03-18 12:19:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-18 12:19:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-03-18 12:19:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-18 12:19:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-03-18 12:19:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-18 12:19:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-03-18 12:19:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-18 12:19:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-03-18 12:19:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-18 12:19:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-03-18 12:19:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-18 12:19:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-03-18 12:19:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-18 12:19:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-03-18 12:19:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-18 12:19:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-03-18 12:19:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-18 12:19:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-03-18 12:19:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-18 12:19:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-03-18 12:19:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-18 12:19:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-03-18 12:19:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-18 12:19:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-03-18 12:19:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-18 12:19:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-03-18 12:19:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-18 12:19:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-03-18 12:19:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-03-18 12:19:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:19:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 15939 backedges. 5924 proven. 2203 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-03-18 12:19:48,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:19:48,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273179242] [2022-03-18 12:19:48,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273179242] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:19:48,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914442330] [2022-03-18 12:19:48,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:19:48,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:19:48,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:19:48,268 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:19:48,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-03-18 12:19:48,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2022-03-18 12:19:48,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:19:48,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 130 conjunts are in the unsatisfiable core [2022-03-18 12:19:48,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:19:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 15939 backedges. 6111 proven. 2016 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-03-18 12:19:52,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:19:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15939 backedges. 6111 proven. 2016 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-03-18 12:19:52,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914442330] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:19:52,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:19:52,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 131, 131] total 198 [2022-03-18 12:19:52,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624930422] [2022-03-18 12:19:52,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:19:52,819 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2022-03-18 12:19:52,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:19:52,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2022-03-18 12:19:52,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8652, Invalid=30354, Unknown=0, NotChecked=0, Total=39006 [2022-03-18 12:19:52,823 INFO L87 Difference]: Start difference. First operand 520 states and 521 transitions. Second operand has 198 states, 198 states have (on average 1.6919191919191918) internal successors, (335), 197 states have internal predecessors, (335), 129 states have call successors, (131), 3 states have call predecessors, (131), 1 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2022-03-18 12:19:59,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:19:59,446 INFO L93 Difference]: Finished difference Result 721 states and 786 transitions. [2022-03-18 12:19:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-03-18 12:19:59,447 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 198 states have (on average 1.6919191919191918) internal successors, (335), 197 states have internal predecessors, (335), 129 states have call successors, (131), 3 states have call predecessors, (131), 1 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) Word has length 517 [2022-03-18 12:19:59,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:19:59,448 INFO L225 Difference]: With dead ends: 721 [2022-03-18 12:19:59,448 INFO L226 Difference]: Without dead ends: 521 [2022-03-18 12:19:59,454 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1421 GetRequests, 1095 SyntacticMatches, 1 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29619 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=19509, Invalid=87093, Unknown=0, NotChecked=0, Total=106602 [2022-03-18 12:19:59,454 INFO L912 BasicCegarLoop]: 75 mSDtfsCounter, 21 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4444 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 4711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 4444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:19:59,454 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 182 Invalid, 4711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 4444 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-18 12:19:59,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-03-18 12:19:59,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2022-03-18 12:19:59,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 389 states have (on average 1.0051413881748072) internal successors, (391), 390 states have internal predecessors, (391), 66 states have call successors, (66), 66 states have call predecessors, (66), 65 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-03-18 12:19:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 522 transitions. [2022-03-18 12:19:59,537 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 522 transitions. Word has length 517 [2022-03-18 12:19:59,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:19:59,537 INFO L478 AbstractCegarLoop]: Abstraction has 521 states and 522 transitions. [2022-03-18 12:19:59,538 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 198 states have (on average 1.6919191919191918) internal successors, (335), 197 states have internal predecessors, (335), 129 states have call successors, (131), 3 states have call predecessors, (131), 1 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2022-03-18 12:19:59,538 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 522 transitions. [2022-03-18 12:19:59,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-03-18 12:19:59,540 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:19:59,541 INFO L500 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:19:59,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-03-18 12:19:59,754 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:19:59,755 INFO L403 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:19:59,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:19:59,755 INFO L85 PathProgramCache]: Analyzing trace with hash 323909260, now seen corresponding path program 126 times [2022-03-18 12:19:59,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:19:59,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141685599] [2022-03-18 12:19:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:19:59,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:19:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:20:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:20:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:20:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:20:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:20:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:20:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:20:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:20:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:20:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:20:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:20:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:20:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:20:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:20:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:20:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:20:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:20:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:20:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:20:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:20:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:20:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:20:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:20:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:20:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:20:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:20:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:20:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:20:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:20:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:20:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:20:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:20:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:20:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-03-18 12:20:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-18 12:20:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-03-18 12:20:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-18 12:20:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-03-18 12:20:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-18 12:20:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-03-18 12:20:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-18 12:20:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-03-18 12:20:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-18 12:20:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-03-18 12:20:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-18 12:20:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-03-18 12:20:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-18 12:20:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-03-18 12:20:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-18 12:20:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-03-18 12:20:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-18 12:20:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-03-18 12:20:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-18 12:20:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-03-18 12:20:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-18 12:20:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-03-18 12:20:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-18 12:20:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-03-18 12:20:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-18 12:20:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-03-18 12:20:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-18 12:20:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-03-18 12:20:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-18 12:20:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-03-18 12:20:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 16003 backedges. 2142 proven. 6049 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-03-18 12:20:01,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:20:01,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141685599] [2022-03-18 12:20:01,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141685599] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:20:01,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690432860] [2022-03-18 12:20:01,362 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:20:01,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:20:01,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:20:01,369 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:20:01,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-03-18 12:20:01,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2022-03-18 12:20:01,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:20:01,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 131 conjunts are in the unsatisfiable core [2022-03-18 12:20:01,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:20:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 16003 backedges. 2206 proven. 5985 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-03-18 12:20:02,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:20:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16003 backedges. 2206 proven. 5985 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-03-18 12:20:02,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690432860] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:20:02,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:20:02,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 73 [2022-03-18 12:20:02,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381475790] [2022-03-18 12:20:02,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:20:02,590 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-03-18 12:20:02,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:20:02,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-03-18 12:20:02,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2226, Invalid=3030, Unknown=0, NotChecked=0, Total=5256 [2022-03-18 12:20:02,595 INFO L87 Difference]: Start difference. First operand 521 states and 522 transitions. Second operand has 73 states, 73 states have (on average 2.835616438356164) internal successors, (207), 70 states have internal predecessors, (207), 65 states have call successors, (68), 4 states have call predecessors, (68), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-03-18 12:20:04,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:20:04,001 INFO L93 Difference]: Finished difference Result 534 states and 536 transitions. [2022-03-18 12:20:04,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-18 12:20:04,002 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.835616438356164) internal successors, (207), 70 states have internal predecessors, (207), 65 states have call successors, (68), 4 states have call predecessors, (68), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 518 [2022-03-18 12:20:04,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:20:04,003 INFO L225 Difference]: With dead ends: 534 [2022-03-18 12:20:04,003 INFO L226 Difference]: Without dead ends: 532 [2022-03-18 12:20:04,005 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1365 GetRequests, 1223 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3368 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=6670, Invalid=13352, Unknown=0, NotChecked=0, Total=20022 [2022-03-18 12:20:04,005 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 170 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:20:04,005 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 60 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:20:04,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-03-18 12:20:04,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 528. [2022-03-18 12:20:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 394 states have (on average 1.0050761421319796) internal successors, (396), 395 states have internal predecessors, (396), 67 states have call successors, (67), 67 states have call predecessors, (67), 66 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-03-18 12:20:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 529 transitions. [2022-03-18 12:20:04,070 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 529 transitions. Word has length 518 [2022-03-18 12:20:04,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:20:04,070 INFO L478 AbstractCegarLoop]: Abstraction has 528 states and 529 transitions. [2022-03-18 12:20:04,070 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.835616438356164) internal successors, (207), 70 states have internal predecessors, (207), 65 states have call successors, (68), 4 states have call predecessors, (68), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-03-18 12:20:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 529 transitions. [2022-03-18 12:20:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-03-18 12:20:04,072 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:20:04,072 INFO L500 BasicCegarLoop]: trace histogram [65, 65, 65, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:20:04,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-03-18 12:20:04,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:20:04,287 INFO L403 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:20:04,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:20:04,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1626347418, now seen corresponding path program 127 times [2022-03-18 12:20:04,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:20:04,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458271363] [2022-03-18 12:20:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:20:04,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:20:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:20:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-03-18 12:20:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:20:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:20:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:20:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:20:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:20:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:20:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:20:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:20:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:20:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:20:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:20:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:20:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:20:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:20:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:20:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:20:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:20:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:20:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:20:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:20:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:20:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:20:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:20:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:20:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:20:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:20:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:20:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:20:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:20:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:20:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:20:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-03-18 12:20:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-18 12:20:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-03-18 12:20:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-18 12:20:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-03-18 12:20:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-18 12:20:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-03-18 12:20:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-18 12:20:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-03-18 12:20:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-18 12:20:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-03-18 12:20:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-18 12:20:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-03-18 12:20:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-18 12:20:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-03-18 12:20:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-18 12:20:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-03-18 12:20:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-18 12:20:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-03-18 12:20:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-18 12:20:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-03-18 12:20:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-18 12:20:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-03-18 12:20:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-18 12:20:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-03-18 12:20:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-18 12:20:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-03-18 12:20:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-18 12:20:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-03-18 12:20:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-18 12:20:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-03-18 12:20:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-03-18 12:20:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,391 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6114 proven. 2270 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-03-18 12:20:07,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:20:07,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458271363] [2022-03-18 12:20:07,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458271363] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:20:07,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934377749] [2022-03-18 12:20:07,392 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:20:07,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:20:07,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:20:07,393 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:20:07,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-03-18 12:20:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:07,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 132 conjunts are in the unsatisfiable core [2022-03-18 12:20:07,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:20:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6304 proven. 2080 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-03-18 12:20:11,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:20:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6304 proven. 2080 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-03-18 12:20:12,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934377749] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:20:12,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:20:12,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 133, 133] total 201 [2022-03-18 12:20:12,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153636082] [2022-03-18 12:20:12,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:20:12,205 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 201 states [2022-03-18 12:20:12,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:20:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2022-03-18 12:20:12,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8917, Invalid=31283, Unknown=0, NotChecked=0, Total=40200 [2022-03-18 12:20:12,209 INFO L87 Difference]: Start difference. First operand 528 states and 529 transitions. Second operand has 201 states, 201 states have (on average 1.691542288557214) internal successors, (340), 200 states have internal predecessors, (340), 131 states have call successors, (133), 3 states have call predecessors, (133), 1 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2022-03-18 12:20:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:20:16,318 INFO L93 Difference]: Finished difference Result 732 states and 798 transitions. [2022-03-18 12:20:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-03-18 12:20:16,318 INFO L78 Accepts]: Start accepts. Automaton has has 201 states, 201 states have (on average 1.691542288557214) internal successors, (340), 200 states have internal predecessors, (340), 131 states have call successors, (133), 3 states have call predecessors, (133), 1 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) Word has length 525 [2022-03-18 12:20:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:20:16,320 INFO L225 Difference]: With dead ends: 732 [2022-03-18 12:20:16,320 INFO L226 Difference]: Without dead ends: 529 [2022-03-18 12:20:16,324 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1112 SyntacticMatches, 1 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30537 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=20106, Invalid=89786, Unknown=0, NotChecked=0, Total=109892 [2022-03-18 12:20:16,325 INFO L912 BasicCegarLoop]: 76 mSDtfsCounter, 21 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4037 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 4313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 4037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 12:20:16,325 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 173 Invalid, 4313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 4037 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 12:20:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-03-18 12:20:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2022-03-18 12:20:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 395 states have (on average 1.0050632911392405) internal successors, (397), 396 states have internal predecessors, (397), 67 states have call successors, (67), 67 states have call predecessors, (67), 66 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-03-18 12:20:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 530 transitions. [2022-03-18 12:20:16,408 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 530 transitions. Word has length 525 [2022-03-18 12:20:16,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:20:16,408 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 530 transitions. [2022-03-18 12:20:16,408 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 201 states, 201 states have (on average 1.691542288557214) internal successors, (340), 200 states have internal predecessors, (340), 131 states have call successors, (133), 3 states have call predecessors, (133), 1 states have return successors, (130), 130 states have call predecessors, (130), 130 states have call successors, (130) [2022-03-18 12:20:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 530 transitions. [2022-03-18 12:20:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2022-03-18 12:20:16,410 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:20:16,410 INFO L500 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:20:16,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-03-18 12:20:16,619 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-03-18 12:20:16,619 INFO L403 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:20:16,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:20:16,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1964827950, now seen corresponding path program 128 times [2022-03-18 12:20:16,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:20:16,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131036759] [2022-03-18 12:20:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:20:16,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:20:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:20:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:20:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:20:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:20:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:20:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:20:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:20:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:20:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:20:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:20:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:20:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:20:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:20:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:20:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:20:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:20:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:20:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:20:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:20:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:20:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:20:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:20:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:20:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:20:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:20:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:20:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:20:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:20:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:20:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:20:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:20:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:20:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:20:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:20:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-03-18 12:20:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-18 12:20:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-03-18 12:20:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-18 12:20:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-03-18 12:20:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-18 12:20:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-03-18 12:20:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-18 12:20:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-03-18 12:20:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-18 12:20:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-03-18 12:20:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-18 12:20:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-03-18 12:20:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-18 12:20:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-03-18 12:20:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-18 12:20:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-03-18 12:20:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-18 12:20:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-03-18 12:20:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-18 12:20:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-03-18 12:20:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-18 12:20:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-03-18 12:20:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-18 12:20:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-03-18 12:20:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-18 12:20:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-03-18 12:20:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-03-18 12:20:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-03-18 12:20:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-18 12:20:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-03-18 12:20:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 16513 backedges. 2208 proven. 6241 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-03-18 12:20:18,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:20:18,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131036759] [2022-03-18 12:20:18,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131036759] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:20:18,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507006077] [2022-03-18 12:20:18,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:20:18,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:20:18,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:20:18,128 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:20:18,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-03-18 12:20:18,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:20:18,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:20:18,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 1277 conjuncts, 133 conjunts are in the unsatisfiable core [2022-03-18 12:20:18,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:20:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 16513 backedges. 2273 proven. 6176 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-03-18 12:20:18,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:20:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16513 backedges. 2273 proven. 6176 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-03-18 12:20:19,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507006077] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:20:19,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:20:19,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70, 70] total 74 [2022-03-18 12:20:19,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117164738] [2022-03-18 12:20:19,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:20:19,127 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-03-18 12:20:19,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:20:19,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-03-18 12:20:19,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2293, Invalid=3109, Unknown=0, NotChecked=0, Total=5402 [2022-03-18 12:20:19,128 INFO L87 Difference]: Start difference. First operand 529 states and 530 transitions. Second operand has 74 states, 74 states have (on average 2.8378378378378377) internal successors, (210), 71 states have internal predecessors, (210), 66 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-03-18 12:20:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:20:20,327 INFO L93 Difference]: Finished difference Result 542 states and 544 transitions. [2022-03-18 12:20:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-18 12:20:20,327 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.8378378378378377) internal successors, (210), 71 states have internal predecessors, (210), 66 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Word has length 526 [2022-03-18 12:20:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:20:20,328 INFO L225 Difference]: With dead ends: 542 [2022-03-18 12:20:20,328 INFO L226 Difference]: Without dead ends: 540 [2022-03-18 12:20:20,330 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1386 GetRequests, 1242 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3453 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=6871, Invalid=13721, Unknown=0, NotChecked=0, Total=20592 [2022-03-18 12:20:20,331 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 157 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:20:20,331 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 55 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:20:20,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-03-18 12:20:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 536. [2022-03-18 12:20:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 400 states have (on average 1.005) internal successors, (402), 401 states have internal predecessors, (402), 68 states have call successors, (68), 68 states have call predecessors, (68), 67 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-03-18 12:20:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 537 transitions. [2022-03-18 12:20:20,408 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 537 transitions. Word has length 526 [2022-03-18 12:20:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:20:20,409 INFO L478 AbstractCegarLoop]: Abstraction has 536 states and 537 transitions. [2022-03-18 12:20:20,409 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.8378378378378377) internal successors, (210), 71 states have internal predecessors, (210), 66 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-03-18 12:20:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 537 transitions. [2022-03-18 12:20:20,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-03-18 12:20:20,411 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:20:20,411 INFO L500 BasicCegarLoop]: trace histogram [66, 66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:20:20,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-03-18 12:20:20,628 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-03-18 12:20:20,628 INFO L403 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:20:20,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:20:20,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1220010108, now seen corresponding path program 129 times [2022-03-18 12:20:20,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:20:20,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116521309] [2022-03-18 12:20:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:20:20,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:20:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:20:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-18 12:20:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:20:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:20:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:20:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:20:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:20:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:20:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:20:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:20:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:20:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:20:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:20:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:20:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:20:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:20:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:20:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:20:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:20:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:20:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:20:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:20:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:20:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:20:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:20:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:20:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:20:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:20:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:20:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:20:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:20:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:20:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:20:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:20:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-03-18 12:20:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-18 12:20:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-03-18 12:20:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-18 12:20:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-03-18 12:20:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-18 12:20:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-03-18 12:20:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-18 12:20:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-03-18 12:20:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-18 12:20:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-03-18 12:20:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-18 12:20:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-03-18 12:20:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-18 12:20:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-03-18 12:20:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-18 12:20:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-03-18 12:20:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-18 12:20:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-03-18 12:20:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-18 12:20:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-03-18 12:20:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-18 12:20:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-03-18 12:20:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-18 12:20:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-03-18 12:20:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-18 12:20:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-03-18 12:20:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-03-18 12:20:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-03-18 12:20:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-18 12:20:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-03-18 12:20:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-03-18 12:20:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 16965 backedges. 6307 proven. 2338 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-03-18 12:20:23,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:20:23,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116521309] [2022-03-18 12:20:23,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116521309] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:20:23,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945481902] [2022-03-18 12:20:23,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:20:23,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:20:23,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:20:23,305 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:20:23,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-03-18 12:20:23,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2022-03-18 12:20:23,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:20:23,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 134 conjunts are in the unsatisfiable core [2022-03-18 12:20:23,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:20:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 16965 backedges. 6500 proven. 2145 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-03-18 12:20:29,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:20:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16965 backedges. 6500 proven. 2145 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-03-18 12:20:30,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945481902] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:20:30,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:20:30,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 135, 135] total 204 [2022-03-18 12:20:30,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959141732] [2022-03-18 12:20:30,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:20:30,090 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2022-03-18 12:20:30,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:20:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2022-03-18 12:20:30,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9186, Invalid=32226, Unknown=0, NotChecked=0, Total=41412 [2022-03-18 12:20:30,094 INFO L87 Difference]: Start difference. First operand 536 states and 537 transitions. Second operand has 204 states, 204 states have (on average 1.6911764705882353) internal successors, (345), 203 states have internal predecessors, (345), 133 states have call successors, (135), 3 states have call predecessors, (135), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2022-03-18 12:20:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:20:35,821 INFO L93 Difference]: Finished difference Result 743 states and 810 transitions. [2022-03-18 12:20:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-03-18 12:20:35,822 INFO L78 Accepts]: Start accepts. Automaton has has 204 states, 204 states have (on average 1.6911764705882353) internal successors, (345), 203 states have internal predecessors, (345), 133 states have call successors, (135), 3 states have call predecessors, (135), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) Word has length 533 [2022-03-18 12:20:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:20:35,823 INFO L225 Difference]: With dead ends: 743 [2022-03-18 12:20:35,823 INFO L226 Difference]: Without dead ends: 537 [2022-03-18 12:20:35,826 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1465 GetRequests, 1129 SyntacticMatches, 1 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31469 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=20712, Invalid=92520, Unknown=0, NotChecked=0, Total=113232 [2022-03-18 12:20:35,827 INFO L912 BasicCegarLoop]: 77 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3019 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 3019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:20:35,827 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 129 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 3019 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 12:20:35,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-03-18 12:20:35,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2022-03-18 12:20:35,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 401 states have (on average 1.0049875311720697) internal successors, (403), 402 states have internal predecessors, (403), 68 states have call successors, (68), 68 states have call predecessors, (68), 67 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-03-18 12:20:35,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 538 transitions. [2022-03-18 12:20:35,895 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 538 transitions. Word has length 533 [2022-03-18 12:20:35,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:20:35,895 INFO L478 AbstractCegarLoop]: Abstraction has 537 states and 538 transitions. [2022-03-18 12:20:35,895 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 1.6911764705882353) internal successors, (345), 203 states have internal predecessors, (345), 133 states have call successors, (135), 3 states have call predecessors, (135), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2022-03-18 12:20:35,895 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 538 transitions. [2022-03-18 12:20:35,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-03-18 12:20:35,897 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:20:35,897 INFO L500 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:20:35,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-03-18 12:20:36,115 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:20:36,115 INFO L403 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:20:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:20:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash -200289204, now seen corresponding path program 130 times [2022-03-18 12:20:36,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:20:36,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635540878] [2022-03-18 12:20:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:20:36,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:20:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:20:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:20:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:20:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:20:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:20:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:20:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:20:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:20:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:20:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:20:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:20:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:20:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:20:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:20:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:20:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:20:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:20:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:20:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:20:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:20:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:20:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:20:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:20:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:20:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:20:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:20:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:20:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:20:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:20:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:20:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:20:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:20:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:20:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:20:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:20:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-03-18 12:20:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-18 12:20:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-03-18 12:20:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-18 12:20:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-03-18 12:20:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-18 12:20:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-03-18 12:20:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-18 12:20:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-03-18 12:20:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-18 12:20:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-03-18 12:20:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-18 12:20:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-03-18 12:20:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-18 12:20:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-03-18 12:20:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-18 12:20:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-03-18 12:20:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-18 12:20:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-03-18 12:20:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-18 12:20:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-03-18 12:20:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-18 12:20:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-03-18 12:20:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-18 12:20:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-03-18 12:20:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-18 12:20:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-03-18 12:20:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-03-18 12:20:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-03-18 12:20:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-03-18 12:20:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-03-18 12:20:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17031 backedges. 2275 proven. 6436 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-03-18 12:20:37,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:20:37,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635540878] [2022-03-18 12:20:37,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635540878] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:20:37,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758444161] [2022-03-18 12:20:37,358 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:20:37,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:20:37,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:20:37,375 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:20:37,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-03-18 12:20:37,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:20:37,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:20:37,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 135 conjunts are in the unsatisfiable core [2022-03-18 12:20:37,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:20:37,960 INFO L134 CoverageAnalysis]: Checked inductivity of 17031 backedges. 2341 proven. 6370 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-03-18 12:20:37,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:20:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 17031 backedges. 2341 proven. 6370 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-03-18 12:20:38,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758444161] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:20:38,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:20:38,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 75 [2022-03-18 12:20:38,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135792910] [2022-03-18 12:20:38,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:20:38,386 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-03-18 12:20:38,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:20:38,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-03-18 12:20:38,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2361, Invalid=3189, Unknown=0, NotChecked=0, Total=5550 [2022-03-18 12:20:38,386 INFO L87 Difference]: Start difference. First operand 537 states and 538 transitions. Second operand has 75 states, 75 states have (on average 2.84) internal successors, (213), 72 states have internal predecessors, (213), 67 states have call successors, (70), 4 states have call predecessors, (70), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-03-18 12:20:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:20:39,619 INFO L93 Difference]: Finished difference Result 550 states and 552 transitions. [2022-03-18 12:20:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-18 12:20:39,619 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.84) internal successors, (213), 72 states have internal predecessors, (213), 67 states have call successors, (70), 4 states have call predecessors, (70), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Word has length 534 [2022-03-18 12:20:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:20:39,620 INFO L225 Difference]: With dead ends: 550 [2022-03-18 12:20:39,620 INFO L226 Difference]: Without dead ends: 548 [2022-03-18 12:20:39,621 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1407 GetRequests, 1261 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3539 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=7075, Invalid=14095, Unknown=0, NotChecked=0, Total=21170 [2022-03-18 12:20:39,621 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 162 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:20:39,622 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 55 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:20:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-03-18 12:20:39,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 544. [2022-03-18 12:20:39,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 406 states have (on average 1.0049261083743843) internal successors, (408), 407 states have internal predecessors, (408), 69 states have call successors, (69), 69 states have call predecessors, (69), 68 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2022-03-18 12:20:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 545 transitions. [2022-03-18 12:20:39,689 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 545 transitions. Word has length 534 [2022-03-18 12:20:39,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:20:39,689 INFO L478 AbstractCegarLoop]: Abstraction has 544 states and 545 transitions. [2022-03-18 12:20:39,689 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.84) internal successors, (213), 72 states have internal predecessors, (213), 67 states have call successors, (70), 4 states have call predecessors, (70), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-03-18 12:20:39,689 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 545 transitions. [2022-03-18 12:20:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-03-18 12:20:39,691 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:20:39,691 INFO L500 BasicCegarLoop]: trace histogram [67, 67, 67, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:20:39,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-03-18 12:20:39,894 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:20:39,894 INFO L403 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:20:39,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:20:39,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1230869158, now seen corresponding path program 131 times [2022-03-18 12:20:39,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:20:39,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126799230] [2022-03-18 12:20:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:20:39,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:20:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:20:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-03-18 12:20:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:20:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:20:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:20:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:20:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:20:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:20:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:20:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:20:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:20:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:20:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:20:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:20:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:20:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:20:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:20:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:20:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:20:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:20:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:20:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:20:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:20:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:20:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:20:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:20:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:20:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:20:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:20:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:20:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:20:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:20:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:20:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:20:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:20:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-03-18 12:20:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-18 12:20:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-03-18 12:20:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-18 12:20:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-03-18 12:20:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-18 12:20:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-03-18 12:20:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-18 12:20:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-03-18 12:20:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-18 12:20:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-03-18 12:20:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-18 12:20:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-03-18 12:20:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-18 12:20:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-03-18 12:20:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-18 12:20:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-03-18 12:20:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-18 12:20:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-03-18 12:20:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-18 12:20:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-03-18 12:20:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-18 12:20:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-03-18 12:20:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-18 12:20:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-03-18 12:20:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-18 12:20:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-03-18 12:20:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-03-18 12:20:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-03-18 12:20:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-03-18 12:20:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-03-18 12:20:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-03-18 12:20:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17490 backedges. 6503 proven. 2407 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-03-18 12:20:44,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:20:44,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126799230] [2022-03-18 12:20:44,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126799230] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:20:44,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987368654] [2022-03-18 12:20:44,340 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:20:44,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:20:44,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:20:44,341 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:20:44,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-03-18 12:20:44,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2022-03-18 12:20:44,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:20:44,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 136 conjunts are in the unsatisfiable core [2022-03-18 12:20:44,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:20:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 17490 backedges. 6699 proven. 2211 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-03-18 12:20:50,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:20:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 17490 backedges. 6699 proven. 2211 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-03-18 12:20:50,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987368654] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:20:50,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:20:50,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 137, 137] total 207 [2022-03-18 12:20:50,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803650965] [2022-03-18 12:20:50,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:20:50,604 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 207 states [2022-03-18 12:20:50,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:20:50,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2022-03-18 12:20:50,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9459, Invalid=33183, Unknown=0, NotChecked=0, Total=42642 [2022-03-18 12:20:50,607 INFO L87 Difference]: Start difference. First operand 544 states and 545 transitions. Second operand has 207 states, 207 states have (on average 1.6908212560386473) internal successors, (350), 206 states have internal predecessors, (350), 135 states have call successors, (137), 3 states have call predecessors, (137), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2022-03-18 12:20:54,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:20:54,663 INFO L93 Difference]: Finished difference Result 754 states and 822 transitions. [2022-03-18 12:20:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-03-18 12:20:54,663 INFO L78 Accepts]: Start accepts. Automaton has has 207 states, 207 states have (on average 1.6908212560386473) internal successors, (350), 206 states have internal predecessors, (350), 135 states have call successors, (137), 3 states have call predecessors, (137), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) Word has length 541 [2022-03-18 12:20:54,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:20:54,665 INFO L225 Difference]: With dead ends: 754 [2022-03-18 12:20:54,665 INFO L226 Difference]: Without dead ends: 545 [2022-03-18 12:20:54,670 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1487 GetRequests, 1146 SyntacticMatches, 1 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32415 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=21327, Invalid=95295, Unknown=0, NotChecked=0, Total=116622 [2022-03-18 12:20:54,670 INFO L912 BasicCegarLoop]: 78 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2927 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 12:20:54,670 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 135 Invalid, 3206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2927 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 12:20:54,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-03-18 12:20:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2022-03-18 12:20:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 407 states have (on average 1.0049140049140048) internal successors, (409), 408 states have internal predecessors, (409), 69 states have call successors, (69), 69 states have call predecessors, (69), 68 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2022-03-18 12:20:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 546 transitions. [2022-03-18 12:20:54,739 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 546 transitions. Word has length 541 [2022-03-18 12:20:54,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:20:54,740 INFO L478 AbstractCegarLoop]: Abstraction has 545 states and 546 transitions. [2022-03-18 12:20:54,740 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 207 states, 207 states have (on average 1.6908212560386473) internal successors, (350), 206 states have internal predecessors, (350), 135 states have call successors, (137), 3 states have call predecessors, (137), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2022-03-18 12:20:54,740 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 546 transitions. [2022-03-18 12:20:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-03-18 12:20:54,742 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:20:54,742 INFO L500 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:20:54,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Forceful destruction successful, exit code 0 [2022-03-18 12:20:54,960 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2022-03-18 12:20:54,960 INFO L403 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:20:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:20:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1029177490, now seen corresponding path program 132 times [2022-03-18 12:20:54,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:20:54,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631941936] [2022-03-18 12:20:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:20:54,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:20:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:20:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:20:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:20:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:20:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:20:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:20:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:20:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:20:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:20:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:20:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:20:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:20:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:20:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:20:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:20:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:20:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:20:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:20:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:20:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:20:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:20:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:20:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:20:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:20:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:20:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:20:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:20:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:20:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:20:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:20:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:20:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:20:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:20:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:20:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:20:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:20:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-03-18 12:20:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-18 12:20:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-03-18 12:20:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-18 12:20:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-03-18 12:20:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-18 12:20:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-03-18 12:20:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-18 12:20:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-03-18 12:20:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-18 12:20:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-03-18 12:20:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-18 12:20:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-03-18 12:20:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-18 12:20:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-03-18 12:20:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-18 12:20:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-03-18 12:20:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-18 12:20:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-03-18 12:20:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-18 12:20:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-03-18 12:20:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-18 12:20:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-03-18 12:20:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-18 12:20:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-03-18 12:20:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-18 12:20:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-03-18 12:20:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-03-18 12:20:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-03-18 12:20:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-03-18 12:20:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-03-18 12:20:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:20:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 17557 backedges. 2343 proven. 6634 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-03-18 12:20:56,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:20:56,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631941936] [2022-03-18 12:20:56,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631941936] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:20:56,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955089615] [2022-03-18 12:20:56,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:20:56,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:20:56,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:20:56,287 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:20:56,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-03-18 12:20:56,562 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2022-03-18 12:20:56,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:20:56,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 137 conjunts are in the unsatisfiable core [2022-03-18 12:20:56,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:20:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 17557 backedges. 2410 proven. 6567 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-03-18 12:20:56,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:20:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 17557 backedges. 2410 proven. 6567 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-03-18 12:20:57,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955089615] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:20:57,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:20:57,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72, 72] total 76 [2022-03-18 12:20:57,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476225666] [2022-03-18 12:20:57,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:20:57,425 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-03-18 12:20:57,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:20:57,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-03-18 12:20:57,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2430, Invalid=3270, Unknown=0, NotChecked=0, Total=5700 [2022-03-18 12:20:57,426 INFO L87 Difference]: Start difference. First operand 545 states and 546 transitions. Second operand has 76 states, 76 states have (on average 2.8421052631578947) internal successors, (216), 73 states have internal predecessors, (216), 68 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-03-18 12:20:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:20:58,608 INFO L93 Difference]: Finished difference Result 558 states and 560 transitions. [2022-03-18 12:20:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-18 12:20:58,608 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.8421052631578947) internal successors, (216), 73 states have internal predecessors, (216), 68 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 542 [2022-03-18 12:20:58,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:20:58,609 INFO L225 Difference]: With dead ends: 558 [2022-03-18 12:20:58,609 INFO L226 Difference]: Without dead ends: 556 [2022-03-18 12:20:58,611 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1428 GetRequests, 1280 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=7282, Invalid=14474, Unknown=0, NotChecked=0, Total=21756 [2022-03-18 12:20:58,612 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 166 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:20:58,612 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 45 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:20:58,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-03-18 12:20:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 552. [2022-03-18 12:20:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 412 states have (on average 1.0048543689320388) internal successors, (414), 413 states have internal predecessors, (414), 70 states have call successors, (70), 70 states have call predecessors, (70), 69 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-03-18 12:20:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 553 transitions. [2022-03-18 12:20:58,681 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 553 transitions. Word has length 542 [2022-03-18 12:20:58,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:20:58,681 INFO L478 AbstractCegarLoop]: Abstraction has 552 states and 553 transitions. [2022-03-18 12:20:58,681 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.8421052631578947) internal successors, (216), 73 states have internal predecessors, (216), 68 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-03-18 12:20:58,681 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 553 transitions. [2022-03-18 12:20:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2022-03-18 12:20:58,683 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:20:58,683 INFO L500 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:20:58,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-03-18 12:20:58,899 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-03-18 12:20:58,899 INFO L403 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:20:58,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:20:58,899 INFO L85 PathProgramCache]: Analyzing trace with hash -29950652, now seen corresponding path program 133 times [2022-03-18 12:20:58,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:20:58,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99681592] [2022-03-18 12:20:58,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:20:58,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:20:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:21:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-03-18 12:21:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:21:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:21:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:21:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:21:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:21:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:21:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:21:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:21:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:21:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:21:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:21:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:21:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:21:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:21:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:21:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:21:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:21:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:21:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:21:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:21:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:21:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:21:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:21:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:21:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:21:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:21:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:21:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:21:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:21:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:21:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:21:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:21:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:21:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:21:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-03-18 12:21:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-18 12:21:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-03-18 12:21:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-18 12:21:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-03-18 12:21:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-18 12:21:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-03-18 12:21:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-18 12:21:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-03-18 12:21:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-18 12:21:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-03-18 12:21:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-18 12:21:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-03-18 12:21:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-18 12:21:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-03-18 12:21:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-18 12:21:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-03-18 12:21:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-18 12:21:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-03-18 12:21:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-18 12:21:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-03-18 12:21:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-18 12:21:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-03-18 12:21:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-18 12:21:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-03-18 12:21:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-18 12:21:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-03-18 12:21:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-03-18 12:21:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-03-18 12:21:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-03-18 12:21:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-03-18 12:21:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-03-18 12:21:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 18023 backedges. 6702 proven. 2477 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-03-18 12:21:01,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:21:01,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99681592] [2022-03-18 12:21:01,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99681592] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:21:01,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010746271] [2022-03-18 12:21:01,742 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:21:01,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:21:01,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:21:01,743 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:21:01,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-03-18 12:21:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:01,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 138 conjunts are in the unsatisfiable core [2022-03-18 12:21:01,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:21:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18023 backedges. 6901 proven. 2278 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-03-18 12:21:05,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:21:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 18023 backedges. 6901 proven. 2278 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-03-18 12:21:06,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010746271] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:21:06,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:21:06,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 139, 139] total 210 [2022-03-18 12:21:06,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269170682] [2022-03-18 12:21:06,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:21:06,266 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 210 states [2022-03-18 12:21:06,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:21:06,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2022-03-18 12:21:06,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9736, Invalid=34154, Unknown=0, NotChecked=0, Total=43890 [2022-03-18 12:21:06,270 INFO L87 Difference]: Start difference. First operand 552 states and 553 transitions. Second operand has 210 states, 210 states have (on average 1.6904761904761905) internal successors, (355), 209 states have internal predecessors, (355), 137 states have call successors, (139), 3 states have call predecessors, (139), 1 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2022-03-18 12:21:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:21:10,746 INFO L93 Difference]: Finished difference Result 765 states and 834 transitions. [2022-03-18 12:21:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-03-18 12:21:10,746 INFO L78 Accepts]: Start accepts. Automaton has has 210 states, 210 states have (on average 1.6904761904761905) internal successors, (355), 209 states have internal predecessors, (355), 137 states have call successors, (139), 3 states have call predecessors, (139), 1 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) Word has length 549 [2022-03-18 12:21:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:21:10,748 INFO L225 Difference]: With dead ends: 765 [2022-03-18 12:21:10,748 INFO L226 Difference]: Without dead ends: 553 [2022-03-18 12:21:10,752 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1509 GetRequests, 1163 SyntacticMatches, 1 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33375 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=21951, Invalid=98111, Unknown=0, NotChecked=0, Total=120062 [2022-03-18 12:21:10,752 INFO L912 BasicCegarLoop]: 79 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 3872 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 4160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 3872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 12:21:10,752 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 146 Invalid, 4160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 3872 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 12:21:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-03-18 12:21:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-03-18 12:21:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 413 states have (on average 1.0048426150121066) internal successors, (415), 414 states have internal predecessors, (415), 70 states have call successors, (70), 70 states have call predecessors, (70), 69 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-03-18 12:21:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 554 transitions. [2022-03-18 12:21:10,822 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 554 transitions. Word has length 549 [2022-03-18 12:21:10,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:21:10,822 INFO L478 AbstractCegarLoop]: Abstraction has 553 states and 554 transitions. [2022-03-18 12:21:10,822 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 210 states, 210 states have (on average 1.6904761904761905) internal successors, (355), 209 states have internal predecessors, (355), 137 states have call successors, (139), 3 states have call predecessors, (139), 1 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2022-03-18 12:21:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 554 transitions. [2022-03-18 12:21:10,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2022-03-18 12:21:10,824 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:21:10,824 INFO L500 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:21:10,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-03-18 12:21:11,039 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-03-18 12:21:11,039 INFO L403 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:21:11,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:21:11,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1103897100, now seen corresponding path program 134 times [2022-03-18 12:21:11,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:21:11,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509172351] [2022-03-18 12:21:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:21:11,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:21:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:21:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:21:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:21:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:21:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:21:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:21:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:21:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:21:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:21:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:21:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:21:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:21:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:21:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:21:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:21:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:21:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:21:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:21:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:21:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:21:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:21:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:21:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:21:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:21:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:21:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:21:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:21:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:21:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:21:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:21:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:21:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:21:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:21:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:21:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:21:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:21:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:21:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-03-18 12:21:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-18 12:21:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-03-18 12:21:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-18 12:21:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-03-18 12:21:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-18 12:21:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-03-18 12:21:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-18 12:21:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-03-18 12:21:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-18 12:21:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-03-18 12:21:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-18 12:21:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-03-18 12:21:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-18 12:21:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-03-18 12:21:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-18 12:21:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-03-18 12:21:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-18 12:21:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-03-18 12:21:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-18 12:21:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-03-18 12:21:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-18 12:21:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-03-18 12:21:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-18 12:21:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-03-18 12:21:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-03-18 12:21:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-03-18 12:21:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-03-18 12:21:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-03-18 12:21:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-03-18 12:21:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-03-18 12:21:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 18091 backedges. 2412 proven. 6835 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-03-18 12:21:12,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:21:12,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509172351] [2022-03-18 12:21:12,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509172351] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:21:12,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298395802] [2022-03-18 12:21:12,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:21:12,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:21:12,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:21:12,188 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:21:12,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-03-18 12:21:12,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:21:12,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:21:12,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 139 conjunts are in the unsatisfiable core [2022-03-18 12:21:12,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:21:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18091 backedges. 2480 proven. 6767 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-03-18 12:21:12,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:21:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 18091 backedges. 2480 proven. 6767 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-03-18 12:21:13,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298395802] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:21:13,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:21:13,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73, 73] total 77 [2022-03-18 12:21:13,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198669454] [2022-03-18 12:21:13,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:21:13,229 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-03-18 12:21:13,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:21:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-03-18 12:21:13,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2500, Invalid=3352, Unknown=0, NotChecked=0, Total=5852 [2022-03-18 12:21:13,229 INFO L87 Difference]: Start difference. First operand 553 states and 554 transitions. Second operand has 77 states, 77 states have (on average 2.844155844155844) internal successors, (219), 74 states have internal predecessors, (219), 69 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-03-18 12:21:14,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:21:14,452 INFO L93 Difference]: Finished difference Result 566 states and 568 transitions. [2022-03-18 12:21:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-18 12:21:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.844155844155844) internal successors, (219), 74 states have internal predecessors, (219), 69 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Word has length 550 [2022-03-18 12:21:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:21:14,453 INFO L225 Difference]: With dead ends: 566 [2022-03-18 12:21:14,453 INFO L226 Difference]: Without dead ends: 564 [2022-03-18 12:21:14,455 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1449 GetRequests, 1299 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3714 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=7492, Invalid=14858, Unknown=0, NotChecked=0, Total=22350 [2022-03-18 12:21:14,455 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 173 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:21:14,455 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 60 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:21:14,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-03-18 12:21:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2022-03-18 12:21:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 418 states have (on average 1.0047846889952152) internal successors, (420), 419 states have internal predecessors, (420), 71 states have call successors, (71), 71 states have call predecessors, (71), 70 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-03-18 12:21:14,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 561 transitions. [2022-03-18 12:21:14,526 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 561 transitions. Word has length 550 [2022-03-18 12:21:14,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:21:14,526 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 561 transitions. [2022-03-18 12:21:14,526 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.844155844155844) internal successors, (219), 74 states have internal predecessors, (219), 69 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-03-18 12:21:14,527 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 561 transitions. [2022-03-18 12:21:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-03-18 12:21:14,529 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:21:14,529 INFO L500 BasicCegarLoop]: trace histogram [69, 69, 69, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:21:14,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-03-18 12:21:14,742 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-03-18 12:21:14,742 INFO L403 AbstractCegarLoop]: === Iteration 137 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:21:14,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:21:14,743 INFO L85 PathProgramCache]: Analyzing trace with hash -209564442, now seen corresponding path program 135 times [2022-03-18 12:21:14,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:21:14,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959934642] [2022-03-18 12:21:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:21:14,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:21:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:21:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-03-18 12:21:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:21:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:21:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:21:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:21:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:21:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:21:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:21:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:21:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:21:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:21:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:21:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:21:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:21:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:21:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:21:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:21:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:21:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:21:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:21:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:21:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:21:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:21:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:21:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:21:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:21:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:21:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:21:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:21:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:21:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:21:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:21:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:21:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:21:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:21:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:21:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-03-18 12:21:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-18 12:21:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-03-18 12:21:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-18 12:21:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-03-18 12:21:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-18 12:21:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-03-18 12:21:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-18 12:21:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-03-18 12:21:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-18 12:21:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-03-18 12:21:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-18 12:21:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-03-18 12:21:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-18 12:21:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-03-18 12:21:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-18 12:21:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-03-18 12:21:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-18 12:21:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-03-18 12:21:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-18 12:21:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-03-18 12:21:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-18 12:21:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-03-18 12:21:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-18 12:21:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-03-18 12:21:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-03-18 12:21:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-03-18 12:21:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-03-18 12:21:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-03-18 12:21:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-03-18 12:21:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-03-18 12:21:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-03-18 12:21:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:17,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 6904 proven. 2548 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-03-18 12:21:17,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:21:17,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959934642] [2022-03-18 12:21:17,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959934642] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:21:17,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660749640] [2022-03-18 12:21:17,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:21:17,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:21:17,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:21:17,842 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:21:17,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-03-18 12:21:18,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2022-03-18 12:21:18,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:21:18,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 140 conjunts are in the unsatisfiable core [2022-03-18 12:21:18,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:21:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 7106 proven. 2346 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-03-18 12:21:22,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:21:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 7106 proven. 2346 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-03-18 12:21:22,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660749640] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:21:22,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:21:22,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 141, 141] total 213 [2022-03-18 12:21:22,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698995317] [2022-03-18 12:21:22,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:21:22,656 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 213 states [2022-03-18 12:21:22,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:21:22,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2022-03-18 12:21:22,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10017, Invalid=35139, Unknown=0, NotChecked=0, Total=45156 [2022-03-18 12:21:22,659 INFO L87 Difference]: Start difference. First operand 560 states and 561 transitions. Second operand has 213 states, 213 states have (on average 1.6901408450704225) internal successors, (360), 212 states have internal predecessors, (360), 139 states have call successors, (141), 3 states have call predecessors, (141), 1 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2022-03-18 12:21:27,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:21:27,134 INFO L93 Difference]: Finished difference Result 776 states and 846 transitions. [2022-03-18 12:21:27,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-03-18 12:21:27,134 INFO L78 Accepts]: Start accepts. Automaton has has 213 states, 213 states have (on average 1.6901408450704225) internal successors, (360), 212 states have internal predecessors, (360), 139 states have call successors, (141), 3 states have call predecessors, (141), 1 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) Word has length 557 [2022-03-18 12:21:27,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:21:27,135 INFO L225 Difference]: With dead ends: 776 [2022-03-18 12:21:27,136 INFO L226 Difference]: Without dead ends: 561 [2022-03-18 12:21:27,140 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1531 GetRequests, 1180 SyntacticMatches, 1 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34349 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=22584, Invalid=100968, Unknown=0, NotChecked=0, Total=123552 [2022-03-18 12:21:27,140 INFO L912 BasicCegarLoop]: 80 mSDtfsCounter, 21 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 3963 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 4248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 3963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 12:21:27,140 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 157 Invalid, 4248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 3963 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 12:21:27,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-03-18 12:21:27,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-03-18 12:21:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 419 states have (on average 1.0047732696897376) internal successors, (421), 420 states have internal predecessors, (421), 71 states have call successors, (71), 71 states have call predecessors, (71), 70 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-03-18 12:21:27,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 562 transitions. [2022-03-18 12:21:27,212 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 562 transitions. Word has length 557 [2022-03-18 12:21:27,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:21:27,213 INFO L478 AbstractCegarLoop]: Abstraction has 561 states and 562 transitions. [2022-03-18 12:21:27,213 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 213 states, 213 states have (on average 1.6901408450704225) internal successors, (360), 212 states have internal predecessors, (360), 139 states have call successors, (141), 3 states have call predecessors, (141), 1 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2022-03-18 12:21:27,213 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 562 transitions. [2022-03-18 12:21:27,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2022-03-18 12:21:27,215 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:21:27,215 INFO L500 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:21:27,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-03-18 12:21:27,433 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-03-18 12:21:27,433 INFO L403 AbstractCegarLoop]: === Iteration 138 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:21:27,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:21:27,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1193945518, now seen corresponding path program 136 times [2022-03-18 12:21:27,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:21:27,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476533156] [2022-03-18 12:21:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:21:27,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:21:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:21:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:21:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:21:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:21:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:21:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:21:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:21:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:21:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:21:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:21:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:21:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:21:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:21:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:21:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:21:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:21:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:21:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:21:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:21:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:21:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:21:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:21:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:21:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:21:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:21:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:21:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:21:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:21:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:21:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:21:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-03-18 12:21:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-18 12:21:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-03-18 12:21:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-18 12:21:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-03-18 12:21:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-18 12:21:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-03-18 12:21:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-18 12:21:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-03-18 12:21:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-18 12:21:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-03-18 12:21:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-18 12:21:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-03-18 12:21:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-18 12:21:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-03-18 12:21:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-18 12:21:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-03-18 12:21:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-18 12:21:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-03-18 12:21:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-18 12:21:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-03-18 12:21:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-18 12:21:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-03-18 12:21:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-18 12:21:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-03-18 12:21:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-18 12:21:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-03-18 12:21:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-18 12:21:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-03-18 12:21:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-18 12:21:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-03-18 12:21:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-03-18 12:21:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2022-03-18 12:21:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-03-18 12:21:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-03-18 12:21:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-03-18 12:21:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-03-18 12:21:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-03-18 12:21:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-03-18 12:21:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 18633 backedges. 2482 proven. 7039 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-03-18 12:21:28,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:21:28,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476533156] [2022-03-18 12:21:28,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476533156] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:21:28,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115645809] [2022-03-18 12:21:28,582 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:21:28,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:21:28,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:21:28,583 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:21:28,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-03-18 12:21:28,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:21:28,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:21:28,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 141 conjunts are in the unsatisfiable core [2022-03-18 12:21:28,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:21:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18633 backedges. 2551 proven. 6970 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-03-18 12:21:29,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:21:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18633 backedges. 2551 proven. 6970 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-03-18 12:21:29,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115645809] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:21:29,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:21:29,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74, 74] total 78 [2022-03-18 12:21:29,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052886960] [2022-03-18 12:21:29,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:21:29,635 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-03-18 12:21:29,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:21:29,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-03-18 12:21:29,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2571, Invalid=3435, Unknown=0, NotChecked=0, Total=6006 [2022-03-18 12:21:29,636 INFO L87 Difference]: Start difference. First operand 561 states and 562 transitions. Second operand has 78 states, 78 states have (on average 2.8461538461538463) internal successors, (222), 75 states have internal predecessors, (222), 70 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-03-18 12:21:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:21:30,920 INFO L93 Difference]: Finished difference Result 574 states and 576 transitions. [2022-03-18 12:21:30,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-18 12:21:30,921 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.8461538461538463) internal successors, (222), 75 states have internal predecessors, (222), 70 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Word has length 558 [2022-03-18 12:21:30,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:21:30,922 INFO L225 Difference]: With dead ends: 574 [2022-03-18 12:21:30,922 INFO L226 Difference]: Without dead ends: 572 [2022-03-18 12:21:30,923 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1318 SyntacticMatches, 2 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3803 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=7705, Invalid=15247, Unknown=0, NotChecked=0, Total=22952 [2022-03-18 12:21:30,924 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 174 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:21:30,924 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 35 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:21:30,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-03-18 12:21:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 568. [2022-03-18 12:21:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 424 states have (on average 1.0047169811320755) internal successors, (426), 425 states have internal predecessors, (426), 72 states have call successors, (72), 72 states have call predecessors, (72), 71 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-03-18 12:21:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 569 transitions. [2022-03-18 12:21:30,997 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 569 transitions. Word has length 558 [2022-03-18 12:21:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:21:30,997 INFO L478 AbstractCegarLoop]: Abstraction has 568 states and 569 transitions. [2022-03-18 12:21:30,997 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.8461538461538463) internal successors, (222), 75 states have internal predecessors, (222), 70 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-03-18 12:21:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 569 transitions. [2022-03-18 12:21:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-03-18 12:21:31,000 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:21:31,000 INFO L500 BasicCegarLoop]: trace histogram [70, 70, 70, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:21:31,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-03-18 12:21:31,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-03-18 12:21:31,207 INFO L403 AbstractCegarLoop]: === Iteration 139 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:21:31,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:21:31,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1390621948, now seen corresponding path program 137 times [2022-03-18 12:21:31,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:21:31,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129961181] [2022-03-18 12:21:31,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:21:31,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:21:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:21:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-03-18 12:21:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:21:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:21:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:21:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:21:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:21:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:21:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:21:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:21:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:21:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:21:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:21:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:21:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:21:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:21:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:21:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:21:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:21:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:21:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:21:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:21:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:21:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:21:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:21:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:21:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:21:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:21:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:21:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:21:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-03-18 12:21:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-18 12:21:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-03-18 12:21:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-18 12:21:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-03-18 12:21:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-18 12:21:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-03-18 12:21:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-18 12:21:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-03-18 12:21:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-18 12:21:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-03-18 12:21:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-18 12:21:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-03-18 12:21:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-18 12:21:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-03-18 12:21:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-18 12:21:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-03-18 12:21:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-18 12:21:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-03-18 12:21:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-18 12:21:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-03-18 12:21:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-18 12:21:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-03-18 12:21:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-18 12:21:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-03-18 12:21:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-18 12:21:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-03-18 12:21:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-18 12:21:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-03-18 12:21:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-18 12:21:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-03-18 12:21:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-03-18 12:21:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2022-03-18 12:21:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-03-18 12:21:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-03-18 12:21:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-03-18 12:21:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-03-18 12:21:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-03-18 12:21:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-03-18 12:21:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-03-18 12:21:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 19113 backedges. 7109 proven. 2620 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-03-18 12:21:34,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:21:34,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129961181] [2022-03-18 12:21:34,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129961181] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:21:34,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178193283] [2022-03-18 12:21:34,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:21:34,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:21:34,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:21:34,709 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:21:34,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-03-18 12:21:35,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2022-03-18 12:21:35,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:21:35,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 142 conjunts are in the unsatisfiable core [2022-03-18 12:21:35,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:21:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 19113 backedges. 7314 proven. 2415 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-03-18 12:21:40,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:21:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 19113 backedges. 7314 proven. 2415 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-03-18 12:21:40,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178193283] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:21:40,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:21:40,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 143, 143] total 216 [2022-03-18 12:21:40,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843170255] [2022-03-18 12:21:40,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:21:40,919 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2022-03-18 12:21:40,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:21:40,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2022-03-18 12:21:40,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10302, Invalid=36138, Unknown=0, NotChecked=0, Total=46440 [2022-03-18 12:21:40,923 INFO L87 Difference]: Start difference. First operand 568 states and 569 transitions. Second operand has 216 states, 216 states have (on average 1.6898148148148149) internal successors, (365), 215 states have internal predecessors, (365), 141 states have call successors, (143), 3 states have call predecessors, (143), 1 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2022-03-18 12:21:45,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:21:45,531 INFO L93 Difference]: Finished difference Result 787 states and 858 transitions. [2022-03-18 12:21:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-03-18 12:21:45,532 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 216 states have (on average 1.6898148148148149) internal successors, (365), 215 states have internal predecessors, (365), 141 states have call successors, (143), 3 states have call predecessors, (143), 1 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) Word has length 565 [2022-03-18 12:21:45,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:21:45,533 INFO L225 Difference]: With dead ends: 787 [2022-03-18 12:21:45,533 INFO L226 Difference]: Without dead ends: 569 [2022-03-18 12:21:45,538 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1553 GetRequests, 1197 SyntacticMatches, 1 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35337 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=23226, Invalid=103866, Unknown=0, NotChecked=0, Total=127092 [2022-03-18 12:21:45,538 INFO L912 BasicCegarLoop]: 81 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4869 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 5163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 4869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:21:45,538 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 148 Invalid, 5163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 4869 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 12:21:45,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-03-18 12:21:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2022-03-18 12:21:45,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 425 states have (on average 1.0047058823529411) internal successors, (427), 426 states have internal predecessors, (427), 72 states have call successors, (72), 72 states have call predecessors, (72), 71 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-03-18 12:21:45,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 570 transitions. [2022-03-18 12:21:45,611 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 570 transitions. Word has length 565 [2022-03-18 12:21:45,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:21:45,612 INFO L478 AbstractCegarLoop]: Abstraction has 569 states and 570 transitions. [2022-03-18 12:21:45,612 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 216 states have (on average 1.6898148148148149) internal successors, (365), 215 states have internal predecessors, (365), 141 states have call successors, (143), 3 states have call predecessors, (143), 1 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2022-03-18 12:21:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 570 transitions. [2022-03-18 12:21:45,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2022-03-18 12:21:45,614 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:21:45,614 INFO L500 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:21:45,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-03-18 12:21:45,823 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-03-18 12:21:45,824 INFO L403 AbstractCegarLoop]: === Iteration 140 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:21:45,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:21:45,824 INFO L85 PathProgramCache]: Analyzing trace with hash 245325772, now seen corresponding path program 138 times [2022-03-18 12:21:45,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:21:45,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136484339] [2022-03-18 12:21:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:21:45,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:21:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:21:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:21:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:21:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:21:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:21:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:21:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:21:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:21:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:21:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:21:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:21:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:21:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:21:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:21:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:21:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:21:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:21:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:21:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:21:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:21:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:21:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:21:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:21:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:21:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:21:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:21:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:21:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:21:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:21:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:21:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:21:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-03-18 12:21:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-18 12:21:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-03-18 12:21:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-18 12:21:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-03-18 12:21:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-18 12:21:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-03-18 12:21:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-18 12:21:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-03-18 12:21:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-18 12:21:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-03-18 12:21:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-18 12:21:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-03-18 12:21:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-18 12:21:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-03-18 12:21:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-18 12:21:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-03-18 12:21:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-18 12:21:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-03-18 12:21:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-18 12:21:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-03-18 12:21:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-18 12:21:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-03-18 12:21:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-18 12:21:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-03-18 12:21:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-18 12:21:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-03-18 12:21:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-18 12:21:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-03-18 12:21:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-18 12:21:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-03-18 12:21:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-03-18 12:21:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2022-03-18 12:21:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-03-18 12:21:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-03-18 12:21:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-03-18 12:21:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-03-18 12:21:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-03-18 12:21:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2022-03-18 12:21:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 19183 backedges. 2553 proven. 7246 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-03-18 12:21:47,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:21:47,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136484339] [2022-03-18 12:21:47,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136484339] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:21:47,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174285819] [2022-03-18 12:21:47,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:21:47,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:21:47,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:21:47,113 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:21:47,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-03-18 12:21:47,411 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2022-03-18 12:21:47,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:21:47,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 143 conjunts are in the unsatisfiable core [2022-03-18 12:21:47,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:21:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 19183 backedges. 2623 proven. 7176 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-03-18 12:21:47,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:21:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 19183 backedges. 2623 proven. 7176 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-03-18 12:21:48,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174285819] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:21:48,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:21:48,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 75] total 79 [2022-03-18 12:21:48,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103468799] [2022-03-18 12:21:48,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:21:48,322 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-03-18 12:21:48,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:21:48,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-03-18 12:21:48,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2643, Invalid=3519, Unknown=0, NotChecked=0, Total=6162 [2022-03-18 12:21:48,323 INFO L87 Difference]: Start difference. First operand 569 states and 570 transitions. Second operand has 79 states, 79 states have (on average 2.848101265822785) internal successors, (225), 76 states have internal predecessors, (225), 71 states have call successors, (74), 4 states have call predecessors, (74), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-03-18 12:21:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:21:49,538 INFO L93 Difference]: Finished difference Result 582 states and 584 transitions. [2022-03-18 12:21:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-18 12:21:49,538 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.848101265822785) internal successors, (225), 76 states have internal predecessors, (225), 71 states have call successors, (74), 4 states have call predecessors, (74), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Word has length 566 [2022-03-18 12:21:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:21:49,539 INFO L225 Difference]: With dead ends: 582 [2022-03-18 12:21:49,539 INFO L226 Difference]: Without dead ends: 580 [2022-03-18 12:21:49,542 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1491 GetRequests, 1337 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3893 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=7921, Invalid=15641, Unknown=0, NotChecked=0, Total=23562 [2022-03-18 12:21:49,542 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 176 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:21:49,542 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 50 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:21:49,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-03-18 12:21:49,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 576. [2022-03-18 12:21:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 430 states have (on average 1.0046511627906978) internal successors, (432), 431 states have internal predecessors, (432), 73 states have call successors, (73), 73 states have call predecessors, (73), 72 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-03-18 12:21:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 577 transitions. [2022-03-18 12:21:49,639 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 577 transitions. Word has length 566 [2022-03-18 12:21:49,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:21:49,639 INFO L478 AbstractCegarLoop]: Abstraction has 576 states and 577 transitions. [2022-03-18 12:21:49,639 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.848101265822785) internal successors, (225), 76 states have internal predecessors, (225), 71 states have call successors, (74), 4 states have call predecessors, (74), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-03-18 12:21:49,639 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 577 transitions. [2022-03-18 12:21:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2022-03-18 12:21:49,642 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:21:49,643 INFO L500 BasicCegarLoop]: trace histogram [71, 71, 71, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:21:49,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-03-18 12:21:49,865 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-03-18 12:21:49,866 INFO L403 AbstractCegarLoop]: === Iteration 141 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:21:49,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:21:49,866 INFO L85 PathProgramCache]: Analyzing trace with hash 870455078, now seen corresponding path program 139 times [2022-03-18 12:21:49,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:21:49,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932460238] [2022-03-18 12:21:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:21:49,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:21:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:21:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-03-18 12:21:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:21:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:21:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:21:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:21:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:21:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:21:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:21:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:21:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:21:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:21:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:21:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:21:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:21:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:21:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:21:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:21:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:21:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:21:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:21:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:21:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:21:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:21:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:21:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:21:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:21:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:21:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:21:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:21:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:21:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-03-18 12:21:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-18 12:21:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-03-18 12:21:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-18 12:21:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-03-18 12:21:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-18 12:21:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-03-18 12:21:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-18 12:21:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-03-18 12:21:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-18 12:21:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-03-18 12:21:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-18 12:21:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-03-18 12:21:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-18 12:21:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-03-18 12:21:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-18 12:21:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-03-18 12:21:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-18 12:21:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-03-18 12:21:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-18 12:21:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-03-18 12:21:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-18 12:21:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-03-18 12:21:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-18 12:21:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-03-18 12:21:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-18 12:21:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-03-18 12:21:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-18 12:21:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-03-18 12:21:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-18 12:21:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-03-18 12:21:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-03-18 12:21:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2022-03-18 12:21:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-03-18 12:21:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-03-18 12:21:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-03-18 12:21:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-03-18 12:21:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-03-18 12:21:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2022-03-18 12:21:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-03-18 12:21:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 19670 backedges. 7317 proven. 2693 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-03-18 12:21:53,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:21:53,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932460238] [2022-03-18 12:21:53,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932460238] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:21:53,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288808902] [2022-03-18 12:21:53,265 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:21:53,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:21:53,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:21:53,280 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:21:53,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-03-18 12:21:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:21:53,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 144 conjunts are in the unsatisfiable core [2022-03-18 12:21:53,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:21:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 19670 backedges. 7525 proven. 2485 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-03-18 12:21:57,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:21:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 19670 backedges. 7525 proven. 2485 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-03-18 12:21:58,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288808902] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:21:58,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:21:58,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 145, 145] total 219 [2022-03-18 12:21:58,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846965630] [2022-03-18 12:21:58,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:21:58,286 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 219 states [2022-03-18 12:21:58,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:21:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2022-03-18 12:21:58,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10591, Invalid=37151, Unknown=0, NotChecked=0, Total=47742 [2022-03-18 12:21:58,289 INFO L87 Difference]: Start difference. First operand 576 states and 577 transitions. Second operand has 219 states, 219 states have (on average 1.6894977168949772) internal successors, (370), 218 states have internal predecessors, (370), 143 states have call successors, (145), 3 states have call predecessors, (145), 1 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2022-03-18 12:22:03,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:22:03,048 INFO L93 Difference]: Finished difference Result 798 states and 870 transitions. [2022-03-18 12:22:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-03-18 12:22:03,049 INFO L78 Accepts]: Start accepts. Automaton has has 219 states, 219 states have (on average 1.6894977168949772) internal successors, (370), 218 states have internal predecessors, (370), 143 states have call successors, (145), 3 states have call predecessors, (145), 1 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) Word has length 573 [2022-03-18 12:22:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:22:03,050 INFO L225 Difference]: With dead ends: 798 [2022-03-18 12:22:03,050 INFO L226 Difference]: Without dead ends: 577 [2022-03-18 12:22:03,055 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1214 SyntacticMatches, 1 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36339 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=23877, Invalid=106805, Unknown=0, NotChecked=0, Total=130682 [2022-03-18 12:22:03,055 INFO L912 BasicCegarLoop]: 82 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 12:22:03,055 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 124 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2799 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 12:22:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-03-18 12:22:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-03-18 12:22:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 431 states have (on average 1.0046403712296983) internal successors, (433), 432 states have internal predecessors, (433), 73 states have call successors, (73), 73 states have call predecessors, (73), 72 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-03-18 12:22:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 578 transitions. [2022-03-18 12:22:03,131 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 578 transitions. Word has length 573 [2022-03-18 12:22:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:22:03,132 INFO L478 AbstractCegarLoop]: Abstraction has 577 states and 578 transitions. [2022-03-18 12:22:03,132 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 219 states, 219 states have (on average 1.6894977168949772) internal successors, (370), 218 states have internal predecessors, (370), 143 states have call successors, (145), 3 states have call predecessors, (145), 1 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2022-03-18 12:22:03,132 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 578 transitions. [2022-03-18 12:22:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2022-03-18 12:22:03,160 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:22:03,161 INFO L500 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:22:03,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-03-18 12:22:03,378 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:22:03,378 INFO L403 AbstractCegarLoop]: === Iteration 142 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:22:03,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:22:03,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1493656558, now seen corresponding path program 140 times [2022-03-18 12:22:03,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:22:03,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247916574] [2022-03-18 12:22:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:22:03,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:22:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:22:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:22:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:22:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:22:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:22:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:22:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:22:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:22:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:22:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:22:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:22:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:22:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:22:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:22:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:22:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:22:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:22:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:22:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:22:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:22:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:22:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:22:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:22:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:22:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:22:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:22:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:22:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:22:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:22:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:22:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:22:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:22:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-03-18 12:22:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-18 12:22:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-03-18 12:22:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-18 12:22:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-03-18 12:22:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-18 12:22:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-03-18 12:22:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-18 12:22:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-03-18 12:22:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-18 12:22:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-03-18 12:22:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-18 12:22:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-03-18 12:22:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-18 12:22:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-03-18 12:22:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-18 12:22:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-03-18 12:22:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-18 12:22:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-03-18 12:22:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-18 12:22:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-03-18 12:22:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-18 12:22:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-03-18 12:22:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-18 12:22:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-03-18 12:22:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-18 12:22:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-03-18 12:22:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-18 12:22:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-03-18 12:22:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-18 12:22:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-03-18 12:22:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-03-18 12:22:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2022-03-18 12:22:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-03-18 12:22:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-03-18 12:22:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-03-18 12:22:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-03-18 12:22:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-03-18 12:22:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2022-03-18 12:22:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 19741 backedges. 2625 proven. 7456 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-03-18 12:22:04,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:22:04,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247916574] [2022-03-18 12:22:04,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247916574] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:22:04,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251894234] [2022-03-18 12:22:04,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:22:04,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:22:04,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:22:04,584 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:22:04,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-03-18 12:22:04,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:22:04,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:22:04,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 145 conjunts are in the unsatisfiable core [2022-03-18 12:22:04,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:22:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 19741 backedges. 2696 proven. 7385 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-03-18 12:22:05,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:22:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 19741 backedges. 2696 proven. 7385 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-03-18 12:22:05,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251894234] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:22:05,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:22:05,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 80 [2022-03-18 12:22:05,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024456181] [2022-03-18 12:22:05,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:22:05,698 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-03-18 12:22:05,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:22:05,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-03-18 12:22:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2716, Invalid=3604, Unknown=0, NotChecked=0, Total=6320 [2022-03-18 12:22:05,699 INFO L87 Difference]: Start difference. First operand 577 states and 578 transitions. Second operand has 80 states, 80 states have (on average 2.85) internal successors, (228), 77 states have internal predecessors, (228), 72 states have call successors, (75), 4 states have call predecessors, (75), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-03-18 12:22:06,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:22:06,989 INFO L93 Difference]: Finished difference Result 590 states and 592 transitions. [2022-03-18 12:22:06,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-18 12:22:06,989 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.85) internal successors, (228), 77 states have internal predecessors, (228), 72 states have call successors, (75), 4 states have call predecessors, (75), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Word has length 574 [2022-03-18 12:22:06,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:22:06,990 INFO L225 Difference]: With dead ends: 590 [2022-03-18 12:22:06,990 INFO L226 Difference]: Without dead ends: 588 [2022-03-18 12:22:06,991 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1512 GetRequests, 1356 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3984 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=8140, Invalid=16040, Unknown=0, NotChecked=0, Total=24180 [2022-03-18 12:22:06,991 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 175 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 12:22:06,991 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 55 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 12:22:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-03-18 12:22:07,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 584. [2022-03-18 12:22:07,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 436 states have (on average 1.0045871559633028) internal successors, (438), 437 states have internal predecessors, (438), 74 states have call successors, (74), 74 states have call predecessors, (74), 73 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-03-18 12:22:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 585 transitions. [2022-03-18 12:22:07,071 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 585 transitions. Word has length 574 [2022-03-18 12:22:07,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:22:07,071 INFO L478 AbstractCegarLoop]: Abstraction has 584 states and 585 transitions. [2022-03-18 12:22:07,071 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.85) internal successors, (228), 77 states have internal predecessors, (228), 72 states have call successors, (75), 4 states have call predecessors, (75), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-03-18 12:22:07,071 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 585 transitions. [2022-03-18 12:22:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-03-18 12:22:07,074 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:22:07,074 INFO L500 BasicCegarLoop]: trace histogram [72, 72, 72, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:22:07,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-03-18 12:22:07,291 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:22:07,291 INFO L403 AbstractCegarLoop]: === Iteration 143 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:22:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:22:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash 890603716, now seen corresponding path program 141 times [2022-03-18 12:22:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:22:07,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578523254] [2022-03-18 12:22:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:22:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:22:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:22:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-03-18 12:22:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:22:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:22:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:22:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:22:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:22:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:22:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:22:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:22:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:22:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:22:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:22:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:22:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:22:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:22:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:22:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:22:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:22:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:22:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:22:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:22:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:22:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:22:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:22:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:22:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:22:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:22:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:22:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:22:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:22:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:22:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-03-18 12:22:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-18 12:22:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-03-18 12:22:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-18 12:22:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-03-18 12:22:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-18 12:22:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-03-18 12:22:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-18 12:22:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-03-18 12:22:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-18 12:22:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-03-18 12:22:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-18 12:22:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-03-18 12:22:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-18 12:22:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-03-18 12:22:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-18 12:22:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-03-18 12:22:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-18 12:22:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-03-18 12:22:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-18 12:22:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-03-18 12:22:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-18 12:22:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-03-18 12:22:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-18 12:22:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-03-18 12:22:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-18 12:22:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-03-18 12:22:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-18 12:22:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-03-18 12:22:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-18 12:22:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-03-18 12:22:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-03-18 12:22:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2022-03-18 12:22:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-03-18 12:22:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-03-18 12:22:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-03-18 12:22:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-03-18 12:22:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-03-18 12:22:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2022-03-18 12:22:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-03-18 12:22:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 20235 backedges. 7528 proven. 2767 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-03-18 12:22:10,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:22:10,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578523254] [2022-03-18 12:22:10,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578523254] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:22:10,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116342700] [2022-03-18 12:22:10,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:22:10,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:22:10,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:22:10,420 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:22:10,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-03-18 12:22:10,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2022-03-18 12:22:10,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:22:10,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 146 conjunts are in the unsatisfiable core [2022-03-18 12:22:10,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:22:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 20235 backedges. 7739 proven. 2556 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-03-18 12:22:15,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:22:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 20235 backedges. 7739 proven. 2556 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-03-18 12:22:15,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116342700] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:22:15,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:22:15,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 147, 147] total 222 [2022-03-18 12:22:15,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213911153] [2022-03-18 12:22:15,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:22:15,574 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 222 states [2022-03-18 12:22:15,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:22:15,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2022-03-18 12:22:15,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10884, Invalid=38178, Unknown=0, NotChecked=0, Total=49062 [2022-03-18 12:22:15,578 INFO L87 Difference]: Start difference. First operand 584 states and 585 transitions. Second operand has 222 states, 222 states have (on average 1.6891891891891893) internal successors, (375), 221 states have internal predecessors, (375), 145 states have call successors, (147), 3 states have call predecessors, (147), 1 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2022-03-18 12:22:19,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:22:19,902 INFO L93 Difference]: Finished difference Result 809 states and 882 transitions. [2022-03-18 12:22:19,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-03-18 12:22:19,903 INFO L78 Accepts]: Start accepts. Automaton has has 222 states, 222 states have (on average 1.6891891891891893) internal successors, (375), 221 states have internal predecessors, (375), 145 states have call successors, (147), 3 states have call predecessors, (147), 1 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) Word has length 581 [2022-03-18 12:22:19,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:22:19,904 INFO L225 Difference]: With dead ends: 809 [2022-03-18 12:22:19,904 INFO L226 Difference]: Without dead ends: 585 [2022-03-18 12:22:19,909 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1597 GetRequests, 1231 SyntacticMatches, 1 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37355 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=24537, Invalid=109785, Unknown=0, NotChecked=0, Total=134322 [2022-03-18 12:22:19,909 INFO L912 BasicCegarLoop]: 83 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3133 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 3437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 3133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 12:22:19,909 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 130 Invalid, 3437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 3133 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 12:22:19,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-03-18 12:22:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-03-18 12:22:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 437 states have (on average 1.0045766590389016) internal successors, (439), 438 states have internal predecessors, (439), 74 states have call successors, (74), 74 states have call predecessors, (74), 73 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-03-18 12:22:19,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 586 transitions. [2022-03-18 12:22:19,987 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 586 transitions. Word has length 581 [2022-03-18 12:22:19,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:22:19,987 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 586 transitions. [2022-03-18 12:22:19,987 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 222 states, 222 states have (on average 1.6891891891891893) internal successors, (375), 221 states have internal predecessors, (375), 145 states have call successors, (147), 3 states have call predecessors, (147), 1 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2022-03-18 12:22:19,987 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 586 transitions. [2022-03-18 12:22:19,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2022-03-18 12:22:19,989 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:22:19,990 INFO L500 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:22:20,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-03-18 12:22:20,208 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:22:20,208 INFO L403 AbstractCegarLoop]: === Iteration 144 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:22:20,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:22:20,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1952084596, now seen corresponding path program 142 times [2022-03-18 12:22:20,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:22:20,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883971090] [2022-03-18 12:22:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:22:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:22:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:22:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:22:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:22:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:22:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:22:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:22:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:22:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:22:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:22:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:22:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:22:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:22:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:22:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:22:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:22:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:22:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:22:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:22:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:22:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:22:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:22:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:22:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:22:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:22:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:22:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:22:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:22:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:22:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:22:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:22:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:22:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:22:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:22:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-03-18 12:22:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-18 12:22:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-03-18 12:22:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-18 12:22:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-03-18 12:22:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-18 12:22:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-03-18 12:22:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-18 12:22:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-03-18 12:22:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-18 12:22:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-03-18 12:22:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-18 12:22:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-03-18 12:22:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-18 12:22:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-03-18 12:22:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-18 12:22:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-03-18 12:22:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-18 12:22:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-03-18 12:22:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-18 12:22:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-03-18 12:22:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-18 12:22:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-03-18 12:22:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-18 12:22:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-03-18 12:22:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-18 12:22:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-03-18 12:22:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-03-18 12:22:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-03-18 12:22:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-18 12:22:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-03-18 12:22:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-03-18 12:22:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2022-03-18 12:22:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-03-18 12:22:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-03-18 12:22:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-03-18 12:22:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-03-18 12:22:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-03-18 12:22:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2022-03-18 12:22:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 20307 backedges. 2698 proven. 7669 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-03-18 12:22:21,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:22:21,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883971090] [2022-03-18 12:22:21,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883971090] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:22:21,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670440586] [2022-03-18 12:22:21,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:22:21,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:22:21,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:22:21,523 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:22:21,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-03-18 12:22:21,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:22:21,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:22:21,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 147 conjunts are in the unsatisfiable core [2022-03-18 12:22:21,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:22:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20307 backedges. 2770 proven. 7597 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-03-18 12:22:22,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:22:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 20307 backedges. 2770 proven. 7597 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-03-18 12:22:22,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670440586] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:22:22,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:22:22,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 81 [2022-03-18 12:22:22,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344219359] [2022-03-18 12:22:22,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:22:22,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-03-18 12:22:22,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:22:22,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-03-18 12:22:22,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2790, Invalid=3690, Unknown=0, NotChecked=0, Total=6480 [2022-03-18 12:22:22,649 INFO L87 Difference]: Start difference. First operand 585 states and 586 transitions. Second operand has 81 states, 81 states have (on average 2.8518518518518516) internal successors, (231), 78 states have internal predecessors, (231), 73 states have call successors, (76), 4 states have call predecessors, (76), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-03-18 12:22:23,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:22:23,991 INFO L93 Difference]: Finished difference Result 598 states and 600 transitions. [2022-03-18 12:22:23,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-18 12:22:23,991 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.8518518518518516) internal successors, (231), 78 states have internal predecessors, (231), 73 states have call successors, (76), 4 states have call predecessors, (76), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 582 [2022-03-18 12:22:23,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:22:23,993 INFO L225 Difference]: With dead ends: 598 [2022-03-18 12:22:23,993 INFO L226 Difference]: Without dead ends: 596 [2022-03-18 12:22:23,994 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1533 GetRequests, 1375 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4076 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=8362, Invalid=16444, Unknown=0, NotChecked=0, Total=24806 [2022-03-18 12:22:23,994 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 171 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 2118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:22:23,996 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 85 Invalid, 2118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:22:23,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-03-18 12:22:24,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 592. [2022-03-18 12:22:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 442 states have (on average 1.004524886877828) internal successors, (444), 443 states have internal predecessors, (444), 75 states have call successors, (75), 75 states have call predecessors, (75), 74 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-03-18 12:22:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 593 transitions. [2022-03-18 12:22:24,097 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 593 transitions. Word has length 582 [2022-03-18 12:22:24,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:22:24,097 INFO L478 AbstractCegarLoop]: Abstraction has 592 states and 593 transitions. [2022-03-18 12:22:24,097 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.8518518518518516) internal successors, (231), 78 states have internal predecessors, (231), 73 states have call successors, (76), 4 states have call predecessors, (76), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-03-18 12:22:24,097 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 593 transitions. [2022-03-18 12:22:24,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2022-03-18 12:22:24,100 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:22:24,100 INFO L500 BasicCegarLoop]: trace histogram [73, 73, 73, 72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:22:24,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2022-03-18 12:22:24,311 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:22:24,311 INFO L403 AbstractCegarLoop]: === Iteration 145 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:22:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:22:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1579093658, now seen corresponding path program 143 times [2022-03-18 12:22:24,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:22:24,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100441024] [2022-03-18 12:22:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:22:24,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:22:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:22:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-03-18 12:22:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:22:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:22:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:22:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:22:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:22:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:22:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:22:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:22:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:22:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:22:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:22:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:22:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:22:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:22:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:22:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:22:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:22:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:22:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:22:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:22:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:22:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:22:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:22:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:22:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:22:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:22:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:22:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:22:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:22:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:22:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:22:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-03-18 12:22:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-18 12:22:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-03-18 12:22:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-18 12:22:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-03-18 12:22:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-18 12:22:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-03-18 12:22:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-18 12:22:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-03-18 12:22:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-18 12:22:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-03-18 12:22:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-18 12:22:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-03-18 12:22:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-18 12:22:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-03-18 12:22:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-18 12:22:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-03-18 12:22:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-18 12:22:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-03-18 12:22:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-18 12:22:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-03-18 12:22:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-18 12:22:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-03-18 12:22:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-18 12:22:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-03-18 12:22:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-18 12:22:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-03-18 12:22:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-03-18 12:22:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-03-18 12:22:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-18 12:22:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-03-18 12:22:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-03-18 12:22:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2022-03-18 12:22:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-03-18 12:22:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-03-18 12:22:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-03-18 12:22:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-03-18 12:22:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-03-18 12:22:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2022-03-18 12:22:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-03-18 12:22:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 7742 proven. 2842 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-03-18 12:22:28,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:22:28,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100441024] [2022-03-18 12:22:28,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100441024] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:22:28,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168719506] [2022-03-18 12:22:28,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:22:28,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:22:28,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:22:28,553 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:22:28,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-03-18 12:22:28,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2022-03-18 12:22:28,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:22:28,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 148 conjunts are in the unsatisfiable core [2022-03-18 12:22:28,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:22:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 7956 proven. 2628 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-03-18 12:22:33,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:22:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 7956 proven. 2628 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-03-18 12:22:34,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168719506] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:22:34,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:22:34,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 149, 149] total 225 [2022-03-18 12:22:34,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130494548] [2022-03-18 12:22:34,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:22:34,005 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 225 states [2022-03-18 12:22:34,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:22:34,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2022-03-18 12:22:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11181, Invalid=39219, Unknown=0, NotChecked=0, Total=50400 [2022-03-18 12:22:34,008 INFO L87 Difference]: Start difference. First operand 592 states and 593 transitions. Second operand has 225 states, 225 states have (on average 1.6888888888888889) internal successors, (380), 224 states have internal predecessors, (380), 147 states have call successors, (149), 3 states have call predecessors, (149), 1 states have return successors, (146), 146 states have call predecessors, (146), 146 states have call successors, (146) [2022-03-18 12:22:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:22:38,632 INFO L93 Difference]: Finished difference Result 820 states and 894 transitions. [2022-03-18 12:22:38,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-03-18 12:22:38,633 INFO L78 Accepts]: Start accepts. Automaton has has 225 states, 225 states have (on average 1.6888888888888889) internal successors, (380), 224 states have internal predecessors, (380), 147 states have call successors, (149), 3 states have call predecessors, (149), 1 states have return successors, (146), 146 states have call predecessors, (146), 146 states have call successors, (146) Word has length 589 [2022-03-18 12:22:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:22:38,634 INFO L225 Difference]: With dead ends: 820 [2022-03-18 12:22:38,634 INFO L226 Difference]: Without dead ends: 593 [2022-03-18 12:22:38,639 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1619 GetRequests, 1248 SyntacticMatches, 1 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38385 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=25206, Invalid=112806, Unknown=0, NotChecked=0, Total=138012 [2022-03-18 12:22:38,639 INFO L912 BasicCegarLoop]: 84 mSDtfsCounter, 21 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 3433 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 3739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 3433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 12:22:38,639 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 151 Invalid, 3739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 3433 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 12:22:38,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-03-18 12:22:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2022-03-18 12:22:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 443 states have (on average 1.0045146726862302) internal successors, (445), 444 states have internal predecessors, (445), 75 states have call successors, (75), 75 states have call predecessors, (75), 74 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-03-18 12:22:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 594 transitions. [2022-03-18 12:22:38,738 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 594 transitions. Word has length 589 [2022-03-18 12:22:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:22:38,738 INFO L478 AbstractCegarLoop]: Abstraction has 593 states and 594 transitions. [2022-03-18 12:22:38,739 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 225 states, 225 states have (on average 1.6888888888888889) internal successors, (380), 224 states have internal predecessors, (380), 147 states have call successors, (149), 3 states have call predecessors, (149), 1 states have return successors, (146), 146 states have call predecessors, (146), 146 states have call successors, (146) [2022-03-18 12:22:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 594 transitions. [2022-03-18 12:22:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2022-03-18 12:22:38,741 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:22:38,741 INFO L500 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:22:38,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-03-18 12:22:38,955 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-03-18 12:22:38,955 INFO L403 AbstractCegarLoop]: === Iteration 146 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:22:38,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:22:38,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1336127022, now seen corresponding path program 144 times [2022-03-18 12:22:38,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:22:38,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771590267] [2022-03-18 12:22:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:22:38,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:22:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:22:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:22:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:22:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:22:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:22:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:22:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:22:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:22:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:22:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:22:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:22:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:22:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:22:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:22:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:22:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:22:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:22:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:22:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:22:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:22:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:22:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:22:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:22:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:22:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:22:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:22:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:22:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:22:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:22:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:22:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:22:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:22:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:22:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:22:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-03-18 12:22:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-18 12:22:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-03-18 12:22:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-18 12:22:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-03-18 12:22:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-18 12:22:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-03-18 12:22:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-18 12:22:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-03-18 12:22:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-18 12:22:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-03-18 12:22:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-18 12:22:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-03-18 12:22:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-18 12:22:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-03-18 12:22:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-18 12:22:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-03-18 12:22:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-18 12:22:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-03-18 12:22:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-18 12:22:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-03-18 12:22:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-18 12:22:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-03-18 12:22:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-18 12:22:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-03-18 12:22:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-18 12:22:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-03-18 12:22:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-03-18 12:22:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-03-18 12:22:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-03-18 12:22:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-03-18 12:22:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-03-18 12:22:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2022-03-18 12:22:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-03-18 12:22:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-03-18 12:22:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-03-18 12:22:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-03-18 12:22:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-03-18 12:22:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2022-03-18 12:22:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:40,206 INFO L134 CoverageAnalysis]: Checked inductivity of 20881 backedges. 2772 proven. 7885 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-03-18 12:22:40,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:22:40,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771590267] [2022-03-18 12:22:40,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771590267] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:22:40,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098178601] [2022-03-18 12:22:40,206 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:22:40,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:22:40,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:22:40,207 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:22:40,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-03-18 12:22:40,534 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2022-03-18 12:22:40,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:22:40,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1429 conjuncts, 149 conjunts are in the unsatisfiable core [2022-03-18 12:22:40,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:22:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 20881 backedges. 2845 proven. 7812 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-03-18 12:22:41,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:22:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 20881 backedges. 2845 proven. 7812 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-03-18 12:22:42,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098178601] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:22:42,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:22:42,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78, 78] total 82 [2022-03-18 12:22:42,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365650798] [2022-03-18 12:22:42,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:22:42,089 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-03-18 12:22:42,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:22:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-03-18 12:22:42,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2865, Invalid=3777, Unknown=0, NotChecked=0, Total=6642 [2022-03-18 12:22:42,090 INFO L87 Difference]: Start difference. First operand 593 states and 594 transitions. Second operand has 82 states, 82 states have (on average 2.8536585365853657) internal successors, (234), 79 states have internal predecessors, (234), 74 states have call successors, (77), 4 states have call predecessors, (77), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-03-18 12:22:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:22:44,239 INFO L93 Difference]: Finished difference Result 606 states and 608 transitions. [2022-03-18 12:22:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-18 12:22:44,240 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.8536585365853657) internal successors, (234), 79 states have internal predecessors, (234), 74 states have call successors, (77), 4 states have call predecessors, (77), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Word has length 590 [2022-03-18 12:22:44,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:22:44,241 INFO L225 Difference]: With dead ends: 606 [2022-03-18 12:22:44,241 INFO L226 Difference]: Without dead ends: 604 [2022-03-18 12:22:44,242 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1554 GetRequests, 1394 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=8587, Invalid=16853, Unknown=0, NotChecked=0, Total=25440 [2022-03-18 12:22:44,242 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 179 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 12:22:44,242 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 65 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 12:22:44,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-03-18 12:22:44,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 600. [2022-03-18 12:22:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 448 states have (on average 1.0044642857142858) internal successors, (450), 449 states have internal predecessors, (450), 76 states have call successors, (76), 76 states have call predecessors, (76), 75 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-03-18 12:22:44,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 601 transitions. [2022-03-18 12:22:44,323 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 601 transitions. Word has length 590 [2022-03-18 12:22:44,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:22:44,323 INFO L478 AbstractCegarLoop]: Abstraction has 600 states and 601 transitions. [2022-03-18 12:22:44,323 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.8536585365853657) internal successors, (234), 79 states have internal predecessors, (234), 74 states have call successors, (77), 4 states have call predecessors, (77), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-03-18 12:22:44,323 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 601 transitions. [2022-03-18 12:22:44,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2022-03-18 12:22:44,326 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:22:44,326 INFO L500 BasicCegarLoop]: trace histogram [74, 74, 74, 73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:22:44,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-03-18 12:22:44,544 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:22:44,544 INFO L403 AbstractCegarLoop]: === Iteration 147 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:22:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:22:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash -432195964, now seen corresponding path program 145 times [2022-03-18 12:22:44,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:22:44,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744645591] [2022-03-18 12:22:44,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:22:44,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:22:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:22:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-03-18 12:22:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:22:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:22:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:22:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:22:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:22:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:22:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:22:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:22:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:22:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:22:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:22:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:22:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:22:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:22:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:22:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:22:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:22:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:22:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:22:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:22:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:22:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:22:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:22:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:22:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:22:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:22:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:22:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:22:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:22:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:22:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:22:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:22:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-03-18 12:22:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-18 12:22:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-03-18 12:22:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-18 12:22:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-03-18 12:22:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-18 12:22:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-03-18 12:22:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-18 12:22:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-03-18 12:22:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-18 12:22:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-03-18 12:22:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-18 12:22:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-03-18 12:22:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-18 12:22:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-03-18 12:22:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-18 12:22:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-03-18 12:22:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-18 12:22:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-03-18 12:22:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-18 12:22:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-03-18 12:22:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-18 12:22:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-03-18 12:22:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-18 12:22:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-03-18 12:22:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-18 12:22:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-03-18 12:22:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-03-18 12:22:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-03-18 12:22:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-03-18 12:22:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-03-18 12:22:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-03-18 12:22:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2022-03-18 12:22:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-03-18 12:22:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-03-18 12:22:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-03-18 12:22:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-03-18 12:22:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-03-18 12:22:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2022-03-18 12:22:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-03-18 12:22:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 21389 backedges. 7959 proven. 2918 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-03-18 12:22:48,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:22:48,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744645591] [2022-03-18 12:22:48,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744645591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:22:48,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513319722] [2022-03-18 12:22:48,073 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:22:48,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:22:48,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:22:48,074 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:22:48,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-03-18 12:22:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:22:48,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 150 conjunts are in the unsatisfiable core [2022-03-18 12:22:48,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:22:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 21389 backedges. 8176 proven. 2701 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-03-18 12:22:53,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:22:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 21389 backedges. 8176 proven. 2701 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-03-18 12:22:53,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513319722] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:22:53,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:22:53,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 151, 151] total 228 [2022-03-18 12:22:53,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145262391] [2022-03-18 12:22:53,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:22:53,675 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 228 states [2022-03-18 12:22:53,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:22:53,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2022-03-18 12:22:53,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11482, Invalid=40274, Unknown=0, NotChecked=0, Total=51756 [2022-03-18 12:22:53,679 INFO L87 Difference]: Start difference. First operand 600 states and 601 transitions. Second operand has 228 states, 228 states have (on average 1.6885964912280702) internal successors, (385), 227 states have internal predecessors, (385), 149 states have call successors, (151), 3 states have call predecessors, (151), 1 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) [2022-03-18 12:22:58,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:22:58,835 INFO L93 Difference]: Finished difference Result 831 states and 906 transitions. [2022-03-18 12:22:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-03-18 12:22:58,836 INFO L78 Accepts]: Start accepts. Automaton has has 228 states, 228 states have (on average 1.6885964912280702) internal successors, (385), 227 states have internal predecessors, (385), 149 states have call successors, (151), 3 states have call predecessors, (151), 1 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) Word has length 597 [2022-03-18 12:22:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:22:58,837 INFO L225 Difference]: With dead ends: 831 [2022-03-18 12:22:58,837 INFO L226 Difference]: Without dead ends: 601 [2022-03-18 12:22:58,843 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1641 GetRequests, 1265 SyntacticMatches, 1 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39429 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=25884, Invalid=115868, Unknown=0, NotChecked=0, Total=141752 [2022-03-18 12:22:58,843 INFO L912 BasicCegarLoop]: 85 mSDtfsCounter, 21 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4564 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 4873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 4564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:22:58,843 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 167 Invalid, 4873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 4564 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 12:22:58,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-03-18 12:22:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2022-03-18 12:22:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 449 states have (on average 1.0044543429844097) internal successors, (451), 450 states have internal predecessors, (451), 76 states have call successors, (76), 76 states have call predecessors, (76), 75 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-03-18 12:22:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 602 transitions. [2022-03-18 12:22:58,944 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 602 transitions. Word has length 597 [2022-03-18 12:22:58,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:22:58,944 INFO L478 AbstractCegarLoop]: Abstraction has 601 states and 602 transitions. [2022-03-18 12:22:58,944 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 228 states, 228 states have (on average 1.6885964912280702) internal successors, (385), 227 states have internal predecessors, (385), 149 states have call successors, (151), 3 states have call predecessors, (151), 1 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) [2022-03-18 12:22:58,944 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 602 transitions. [2022-03-18 12:22:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-03-18 12:22:58,946 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:22:58,947 INFO L500 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:22:58,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-03-18 12:22:59,164 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-03-18 12:22:59,164 INFO L403 AbstractCegarLoop]: === Iteration 148 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:22:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:22:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash -923096244, now seen corresponding path program 146 times [2022-03-18 12:22:59,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:22:59,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469272627] [2022-03-18 12:22:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:22:59,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:22:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:23:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:23:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:23:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:23:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:23:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:23:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:23:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:23:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:23:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:23:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:23:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:23:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:23:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:23:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:23:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:23:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:23:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:23:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:23:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:23:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:23:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:23:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:23:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:23:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:23:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:23:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:23:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:23:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:23:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:23:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:23:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:23:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:23:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:23:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:23:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-03-18 12:23:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-18 12:23:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-03-18 12:23:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-18 12:23:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-03-18 12:23:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-18 12:23:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-03-18 12:23:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-18 12:23:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-03-18 12:23:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-18 12:23:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-03-18 12:23:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-18 12:23:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-03-18 12:23:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-18 12:23:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-03-18 12:23:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-18 12:23:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-03-18 12:23:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-18 12:23:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-03-18 12:23:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-18 12:23:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-03-18 12:23:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-18 12:23:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-03-18 12:23:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-18 12:23:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-03-18 12:23:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-18 12:23:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-03-18 12:23:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-03-18 12:23:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-03-18 12:23:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-03-18 12:23:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-03-18 12:23:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-03-18 12:23:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2022-03-18 12:23:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-03-18 12:23:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-03-18 12:23:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-03-18 12:23:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-03-18 12:23:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-03-18 12:23:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2022-03-18 12:23:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 21463 backedges. 2847 proven. 8104 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-03-18 12:23:00,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:23:00,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469272627] [2022-03-18 12:23:00,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469272627] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:23:00,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43870357] [2022-03-18 12:23:00,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:23:00,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:23:00,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:23:00,445 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:23:00,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-03-18 12:23:00,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:23:00,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:23:00,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 151 conjunts are in the unsatisfiable core [2022-03-18 12:23:00,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:23:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 21463 backedges. 2921 proven. 8030 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-03-18 12:23:01,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:23:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21463 backedges. 2921 proven. 8030 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-03-18 12:23:01,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43870357] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:23:01,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:23:01,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79, 79] total 83 [2022-03-18 12:23:01,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049649412] [2022-03-18 12:23:01,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:23:01,904 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-03-18 12:23:01,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:23:01,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-03-18 12:23:01,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2941, Invalid=3865, Unknown=0, NotChecked=0, Total=6806 [2022-03-18 12:23:01,905 INFO L87 Difference]: Start difference. First operand 601 states and 602 transitions. Second operand has 83 states, 83 states have (on average 2.855421686746988) internal successors, (237), 80 states have internal predecessors, (237), 75 states have call successors, (78), 4 states have call predecessors, (78), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2022-03-18 12:23:03,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:23:03,716 INFO L93 Difference]: Finished difference Result 614 states and 616 transitions. [2022-03-18 12:23:03,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-03-18 12:23:03,717 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.855421686746988) internal successors, (237), 80 states have internal predecessors, (237), 75 states have call successors, (78), 4 states have call predecessors, (78), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Word has length 598 [2022-03-18 12:23:03,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:23:03,718 INFO L225 Difference]: With dead ends: 614 [2022-03-18 12:23:03,718 INFO L226 Difference]: Without dead ends: 612 [2022-03-18 12:23:03,719 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1413 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4263 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=8815, Invalid=17267, Unknown=0, NotChecked=0, Total=26082 [2022-03-18 12:23:03,719 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 186 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 12:23:03,719 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 45 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 12:23:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-03-18 12:23:03,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 608. [2022-03-18 12:23:03,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 454 states have (on average 1.0044052863436124) internal successors, (456), 455 states have internal predecessors, (456), 77 states have call successors, (77), 77 states have call predecessors, (77), 76 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2022-03-18 12:23:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 609 transitions. [2022-03-18 12:23:03,802 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 609 transitions. Word has length 598 [2022-03-18 12:23:03,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:23:03,803 INFO L478 AbstractCegarLoop]: Abstraction has 608 states and 609 transitions. [2022-03-18 12:23:03,803 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.855421686746988) internal successors, (237), 80 states have internal predecessors, (237), 75 states have call successors, (78), 4 states have call predecessors, (78), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2022-03-18 12:23:03,803 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 609 transitions. [2022-03-18 12:23:03,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-03-18 12:23:03,805 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:23:03,805 INFO L500 BasicCegarLoop]: trace histogram [75, 75, 75, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:23:03,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-03-18 12:23:04,021 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-03-18 12:23:04,022 INFO L403 AbstractCegarLoop]: === Iteration 149 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:23:04,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:23:04,022 INFO L85 PathProgramCache]: Analyzing trace with hash 367188902, now seen corresponding path program 147 times [2022-03-18 12:23:04,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:23:04,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895517706] [2022-03-18 12:23:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:23:04,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:23:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:23:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-03-18 12:23:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:23:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:23:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:23:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:23:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:23:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:23:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:23:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:23:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:23:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:23:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:23:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:23:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:23:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:23:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:23:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:23:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:23:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:23:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:23:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:23:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:23:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:23:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:23:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:23:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:23:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:23:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:23:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:23:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:23:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:23:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:23:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:23:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:23:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-03-18 12:23:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-18 12:23:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-03-18 12:23:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-18 12:23:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-03-18 12:23:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-18 12:23:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-03-18 12:23:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-18 12:23:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-03-18 12:23:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-18 12:23:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-03-18 12:23:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-18 12:23:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-03-18 12:23:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-18 12:23:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-03-18 12:23:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-18 12:23:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-03-18 12:23:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-18 12:23:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-03-18 12:23:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-18 12:23:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-03-18 12:23:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-18 12:23:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-03-18 12:23:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-18 12:23:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-03-18 12:23:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-18 12:23:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-03-18 12:23:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-03-18 12:23:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-03-18 12:23:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-03-18 12:23:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-03-18 12:23:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-03-18 12:23:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2022-03-18 12:23:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-03-18 12:23:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-03-18 12:23:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-03-18 12:23:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-03-18 12:23:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-03-18 12:23:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2022-03-18 12:23:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-03-18 12:23:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 21978 backedges. 8179 proven. 2995 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2022-03-18 12:23:07,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:23:07,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895517706] [2022-03-18 12:23:07,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895517706] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:23:07,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655888285] [2022-03-18 12:23:07,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:23:07,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:23:07,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:23:07,489 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:23:07,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-03-18 12:23:07,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 75 check-sat command(s) [2022-03-18 12:23:07,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:23:07,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 152 conjunts are in the unsatisfiable core [2022-03-18 12:23:07,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:23:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21978 backedges. 8399 proven. 2775 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2022-03-18 12:23:12,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:23:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 21978 backedges. 8399 proven. 2775 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2022-03-18 12:23:13,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655888285] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:23:13,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:23:13,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 153, 153] total 231 [2022-03-18 12:23:13,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673480464] [2022-03-18 12:23:13,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:23:13,262 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 231 states [2022-03-18 12:23:13,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:23:13,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2022-03-18 12:23:13,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11787, Invalid=41343, Unknown=0, NotChecked=0, Total=53130 [2022-03-18 12:23:13,266 INFO L87 Difference]: Start difference. First operand 608 states and 609 transitions. Second operand has 231 states, 231 states have (on average 1.6883116883116882) internal successors, (390), 230 states have internal predecessors, (390), 151 states have call successors, (153), 3 states have call predecessors, (153), 1 states have return successors, (150), 150 states have call predecessors, (150), 150 states have call successors, (150) [2022-03-18 12:23:18,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:23:18,313 INFO L93 Difference]: Finished difference Result 842 states and 918 transitions. [2022-03-18 12:23:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-03-18 12:23:18,313 INFO L78 Accepts]: Start accepts. Automaton has has 231 states, 231 states have (on average 1.6883116883116882) internal successors, (390), 230 states have internal predecessors, (390), 151 states have call successors, (153), 3 states have call predecessors, (153), 1 states have return successors, (150), 150 states have call predecessors, (150), 150 states have call successors, (150) Word has length 605 [2022-03-18 12:23:18,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:23:18,314 INFO L225 Difference]: With dead ends: 842 [2022-03-18 12:23:18,314 INFO L226 Difference]: Without dead ends: 609 [2022-03-18 12:23:18,319 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1663 GetRequests, 1282 SyntacticMatches, 1 SemanticMatches, 380 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40487 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=26571, Invalid=118971, Unknown=0, NotChecked=0, Total=145542 [2022-03-18 12:23:18,319 INFO L912 BasicCegarLoop]: 86 mSDtfsCounter, 21 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4244 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 4555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 4244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 12:23:18,320 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 163 Invalid, 4555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 4244 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 12:23:18,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-03-18 12:23:18,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2022-03-18 12:23:18,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 455 states have (on average 1.0043956043956044) internal successors, (457), 456 states have internal predecessors, (457), 77 states have call successors, (77), 77 states have call predecessors, (77), 76 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2022-03-18 12:23:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 610 transitions. [2022-03-18 12:23:18,405 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 610 transitions. Word has length 605 [2022-03-18 12:23:18,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:23:18,405 INFO L478 AbstractCegarLoop]: Abstraction has 609 states and 610 transitions. [2022-03-18 12:23:18,405 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 231 states, 231 states have (on average 1.6883116883116882) internal successors, (390), 230 states have internal predecessors, (390), 151 states have call successors, (153), 3 states have call predecessors, (153), 1 states have return successors, (150), 150 states have call predecessors, (150), 150 states have call successors, (150) [2022-03-18 12:23:18,405 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 610 transitions. [2022-03-18 12:23:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2022-03-18 12:23:18,408 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:23:18,408 INFO L500 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:23:18,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-03-18 12:23:18,623 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:23:18,623 INFO L403 AbstractCegarLoop]: === Iteration 150 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:23:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:23:18,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1016919954, now seen corresponding path program 148 times [2022-03-18 12:23:18,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:23:18,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266311726] [2022-03-18 12:23:18,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:23:18,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:23:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:23:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:23:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:23:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:23:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:23:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:23:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:23:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:23:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:23:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:23:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:23:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:23:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:23:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:23:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:23:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:23:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:23:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:23:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:23:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:23:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:23:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:23:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:23:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:23:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:23:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:23:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:23:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:23:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:23:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:23:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:23:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:23:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:23:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:23:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:23:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:23:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-03-18 12:23:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-18 12:23:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-03-18 12:23:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-18 12:23:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-03-18 12:23:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-18 12:23:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-03-18 12:23:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-18 12:23:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-03-18 12:23:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-18 12:23:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-03-18 12:23:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-18 12:23:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-03-18 12:23:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-18 12:23:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-03-18 12:23:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-18 12:23:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-03-18 12:23:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-18 12:23:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-03-18 12:23:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-18 12:23:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-03-18 12:23:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-18 12:23:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-03-18 12:23:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-18 12:23:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-03-18 12:23:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-03-18 12:23:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-03-18 12:23:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-03-18 12:23:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-03-18 12:23:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-03-18 12:23:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-03-18 12:23:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-03-18 12:23:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2022-03-18 12:23:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-03-18 12:23:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:19,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-03-18 12:23:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:20,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-03-18 12:23:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:20,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-03-18 12:23:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:20,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-03-18 12:23:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:20,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2022-03-18 12:23:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 22053 backedges. 2923 proven. 8326 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2022-03-18 12:23:20,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:23:20,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266311726] [2022-03-18 12:23:20,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266311726] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:23:20,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566306620] [2022-03-18 12:23:20,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:23:20,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:23:20,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:23:20,007 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:23:20,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-03-18 12:23:20,213 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:23:20,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:23:20,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 153 conjunts are in the unsatisfiable core [2022-03-18 12:23:20,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:23:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 22053 backedges. 2998 proven. 8251 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2022-03-18 12:23:20,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:23:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 22053 backedges. 2998 proven. 8251 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2022-03-18 12:23:21,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566306620] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:23:21,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:23:21,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80, 80] total 84 [2022-03-18 12:23:21,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956273981] [2022-03-18 12:23:21,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:23:21,178 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-03-18 12:23:21,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:23:21,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-03-18 12:23:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3018, Invalid=3954, Unknown=0, NotChecked=0, Total=6972 [2022-03-18 12:23:21,179 INFO L87 Difference]: Start difference. First operand 609 states and 610 transitions. Second operand has 84 states, 84 states have (on average 2.857142857142857) internal successors, (240), 81 states have internal predecessors, (240), 76 states have call successors, (79), 4 states have call predecessors, (79), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-03-18 12:23:22,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:23:22,855 INFO L93 Difference]: Finished difference Result 622 states and 624 transitions. [2022-03-18 12:23:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-18 12:23:22,855 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.857142857142857) internal successors, (240), 81 states have internal predecessors, (240), 76 states have call successors, (79), 4 states have call predecessors, (79), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Word has length 606 [2022-03-18 12:23:22,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:23:22,856 INFO L225 Difference]: With dead ends: 622 [2022-03-18 12:23:22,856 INFO L226 Difference]: Without dead ends: 620 [2022-03-18 12:23:22,858 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1596 GetRequests, 1432 SyntacticMatches, 2 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9046, Invalid=17686, Unknown=0, NotChecked=0, Total=26732 [2022-03-18 12:23:22,858 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 177 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 12:23:22,858 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 55 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 12:23:22,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2022-03-18 12:23:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 616. [2022-03-18 12:23:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 460 states have (on average 1.0043478260869565) internal successors, (462), 461 states have internal predecessors, (462), 78 states have call successors, (78), 78 states have call predecessors, (78), 77 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-03-18 12:23:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 617 transitions. [2022-03-18 12:23:22,944 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 617 transitions. Word has length 606 [2022-03-18 12:23:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:23:22,944 INFO L478 AbstractCegarLoop]: Abstraction has 616 states and 617 transitions. [2022-03-18 12:23:22,945 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.857142857142857) internal successors, (240), 81 states have internal predecessors, (240), 76 states have call successors, (79), 4 states have call predecessors, (79), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-03-18 12:23:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 617 transitions. [2022-03-18 12:23:22,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2022-03-18 12:23:22,947 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:23:22,947 INFO L500 BasicCegarLoop]: trace histogram [76, 76, 76, 75, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:23:22,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Forceful destruction successful, exit code 0 [2022-03-18 12:23:23,155 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2022-03-18 12:23:23,156 INFO L403 AbstractCegarLoop]: === Iteration 151 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:23:23,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:23:23,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1347431356, now seen corresponding path program 149 times [2022-03-18 12:23:23,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:23:23,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242834222] [2022-03-18 12:23:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:23:23,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:23:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:23:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-03-18 12:23:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:23:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:23:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:23:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:23:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:23:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:23:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:23:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:23:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:23:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:23:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:23:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:23:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:23:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:23:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:23:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:23:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:23:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:23:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:23:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:23:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:23:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:23:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:23:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:23:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:23:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:23:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:23:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:23:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:23:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:23:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:23:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:23:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:23:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:23:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-03-18 12:23:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-18 12:23:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-03-18 12:23:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-18 12:23:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-03-18 12:23:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-18 12:23:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-03-18 12:23:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-18 12:23:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-03-18 12:23:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-18 12:23:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-03-18 12:23:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-18 12:23:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-03-18 12:23:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-18 12:23:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-03-18 12:23:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-18 12:23:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-03-18 12:23:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-18 12:23:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-03-18 12:23:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-18 12:23:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-03-18 12:23:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-18 12:23:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-03-18 12:23:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-18 12:23:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-03-18 12:23:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-03-18 12:23:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-03-18 12:23:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-03-18 12:23:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-03-18 12:23:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-03-18 12:23:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-03-18 12:23:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-03-18 12:23:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2022-03-18 12:23:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-03-18 12:23:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-03-18 12:23:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-03-18 12:23:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-03-18 12:23:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-03-18 12:23:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2022-03-18 12:23:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-03-18 12:23:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 22575 backedges. 8402 proven. 3073 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2022-03-18 12:23:26,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:23:26,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242834222] [2022-03-18 12:23:26,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242834222] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:23:26,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613177987] [2022-03-18 12:23:26,842 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:23:26,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:23:26,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:23:26,843 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:23:26,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-03-18 12:23:27,171 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2022-03-18 12:23:27,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:23:27,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 154 conjunts are in the unsatisfiable core [2022-03-18 12:23:27,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:23:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 22575 backedges. 8625 proven. 2850 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2022-03-18 12:23:31,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:23:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 22575 backedges. 8625 proven. 2850 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2022-03-18 12:23:32,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613177987] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:23:32,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:23:32,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 155, 155] total 234 [2022-03-18 12:23:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837206922] [2022-03-18 12:23:32,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:23:32,453 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 234 states [2022-03-18 12:23:32,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:23:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2022-03-18 12:23:32,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12096, Invalid=42426, Unknown=0, NotChecked=0, Total=54522 [2022-03-18 12:23:32,456 INFO L87 Difference]: Start difference. First operand 616 states and 617 transitions. Second operand has 234 states, 234 states have (on average 1.688034188034188) internal successors, (395), 233 states have internal predecessors, (395), 153 states have call successors, (155), 3 states have call predecessors, (155), 1 states have return successors, (152), 152 states have call predecessors, (152), 152 states have call successors, (152) [2022-03-18 12:23:37,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:23:37,895 INFO L93 Difference]: Finished difference Result 853 states and 930 transitions. [2022-03-18 12:23:37,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-03-18 12:23:37,895 INFO L78 Accepts]: Start accepts. Automaton has has 234 states, 234 states have (on average 1.688034188034188) internal successors, (395), 233 states have internal predecessors, (395), 153 states have call successors, (155), 3 states have call predecessors, (155), 1 states have return successors, (152), 152 states have call predecessors, (152), 152 states have call successors, (152) Word has length 613 [2022-03-18 12:23:37,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:23:37,896 INFO L225 Difference]: With dead ends: 853 [2022-03-18 12:23:37,897 INFO L226 Difference]: Without dead ends: 617 [2022-03-18 12:23:37,903 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1685 GetRequests, 1299 SyntacticMatches, 1 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41559 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=27267, Invalid=122115, Unknown=0, NotChecked=0, Total=149382 [2022-03-18 12:23:37,903 INFO L912 BasicCegarLoop]: 87 mSDtfsCounter, 21 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4199 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 4516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 4199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:23:37,903 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 169 Invalid, 4516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 4199 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 12:23:37,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-03-18 12:23:37,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2022-03-18 12:23:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 461 states have (on average 1.0043383947939262) internal successors, (463), 462 states have internal predecessors, (463), 78 states have call successors, (78), 78 states have call predecessors, (78), 77 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-03-18 12:23:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 618 transitions. [2022-03-18 12:23:37,990 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 618 transitions. Word has length 613 [2022-03-18 12:23:37,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:23:37,990 INFO L478 AbstractCegarLoop]: Abstraction has 617 states and 618 transitions. [2022-03-18 12:23:37,991 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 234 states, 234 states have (on average 1.688034188034188) internal successors, (395), 233 states have internal predecessors, (395), 153 states have call successors, (155), 3 states have call predecessors, (155), 1 states have return successors, (152), 152 states have call predecessors, (152), 152 states have call successors, (152) [2022-03-18 12:23:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 618 transitions. [2022-03-18 12:23:37,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2022-03-18 12:23:37,993 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:23:37,993 INFO L500 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:23:38,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-03-18 12:23:38,196 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:23:38,196 INFO L403 AbstractCegarLoop]: === Iteration 152 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:23:38,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:23:38,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1975171340, now seen corresponding path program 150 times [2022-03-18 12:23:38,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:23:38,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880649222] [2022-03-18 12:23:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:23:38,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:23:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:23:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:23:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:23:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:23:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:23:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:23:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:23:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:23:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:23:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:23:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:23:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:23:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:23:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:23:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:23:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:23:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:23:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:23:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:23:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:23:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:23:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:23:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:23:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:23:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:23:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:23:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:23:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:23:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:23:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-03-18 12:23:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-18 12:23:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-03-18 12:23:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-18 12:23:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-03-18 12:23:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-18 12:23:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-03-18 12:23:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-18 12:23:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-03-18 12:23:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-18 12:23:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-03-18 12:23:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-18 12:23:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-03-18 12:23:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-18 12:23:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-03-18 12:23:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-18 12:23:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-03-18 12:23:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-18 12:23:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-03-18 12:23:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-18 12:23:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-03-18 12:23:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-18 12:23:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-03-18 12:23:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-18 12:23:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-03-18 12:23:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-18 12:23:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-03-18 12:23:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-18 12:23:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-03-18 12:23:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-18 12:23:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-03-18 12:23:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-03-18 12:23:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2022-03-18 12:23:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-03-18 12:23:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-03-18 12:23:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-03-18 12:23:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-03-18 12:23:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-03-18 12:23:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-03-18 12:23:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-03-18 12:23:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2022-03-18 12:23:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-03-18 12:23:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-03-18 12:23:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-03-18 12:23:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-03-18 12:23:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-03-18 12:23:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2022-03-18 12:23:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 22651 backedges. 3000 proven. 8551 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2022-03-18 12:23:40,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:23:40,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880649222] [2022-03-18 12:23:40,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880649222] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:23:40,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829016022] [2022-03-18 12:23:40,220 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:23:40,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:23:40,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:23:40,221 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:23:40,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-03-18 12:23:40,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2022-03-18 12:23:40,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:23:40,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 155 conjunts are in the unsatisfiable core [2022-03-18 12:23:40,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:23:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 22651 backedges. 3076 proven. 8475 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2022-03-18 12:23:41,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:23:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 22651 backedges. 3076 proven. 8475 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2022-03-18 12:23:41,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829016022] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:23:41,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:23:41,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81, 81] total 85 [2022-03-18 12:23:41,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846057034] [2022-03-18 12:23:41,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:23:41,811 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-03-18 12:23:41,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:23:41,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-03-18 12:23:41,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3096, Invalid=4044, Unknown=0, NotChecked=0, Total=7140 [2022-03-18 12:23:41,812 INFO L87 Difference]: Start difference. First operand 617 states and 618 transitions. Second operand has 85 states, 85 states have (on average 2.8588235294117648) internal successors, (243), 82 states have internal predecessors, (243), 77 states have call successors, (80), 4 states have call predecessors, (80), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2022-03-18 12:23:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:23:43,324 INFO L93 Difference]: Finished difference Result 630 states and 632 transitions. [2022-03-18 12:23:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-18 12:23:43,325 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.8588235294117648) internal successors, (243), 82 states have internal predecessors, (243), 77 states have call successors, (80), 4 states have call predecessors, (80), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Word has length 614 [2022-03-18 12:23:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:23:43,326 INFO L225 Difference]: With dead ends: 630 [2022-03-18 12:23:43,326 INFO L226 Difference]: Without dead ends: 628 [2022-03-18 12:23:43,327 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1617 GetRequests, 1451 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4454 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9280, Invalid=18110, Unknown=0, NotChecked=0, Total=27390 [2022-03-18 12:23:43,327 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 192 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:23:43,327 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 55 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:23:43,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-03-18 12:23:43,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 624. [2022-03-18 12:23:43,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 466 states have (on average 1.0042918454935623) internal successors, (468), 467 states have internal predecessors, (468), 79 states have call successors, (79), 79 states have call predecessors, (79), 78 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2022-03-18 12:23:43,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 625 transitions. [2022-03-18 12:23:43,415 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 625 transitions. Word has length 614 [2022-03-18 12:23:43,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:23:43,415 INFO L478 AbstractCegarLoop]: Abstraction has 624 states and 625 transitions. [2022-03-18 12:23:43,415 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.8588235294117648) internal successors, (243), 82 states have internal predecessors, (243), 77 states have call successors, (80), 4 states have call predecessors, (80), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2022-03-18 12:23:43,415 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 625 transitions. [2022-03-18 12:23:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2022-03-18 12:23:43,417 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:23:43,417 INFO L500 BasicCegarLoop]: trace histogram [77, 77, 77, 76, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:23:43,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2022-03-18 12:23:43,619 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:23:43,619 INFO L403 AbstractCegarLoop]: === Iteration 153 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:23:43,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:23:43,620 INFO L85 PathProgramCache]: Analyzing trace with hash -380906010, now seen corresponding path program 151 times [2022-03-18 12:23:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:23:43,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923590204] [2022-03-18 12:23:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:23:43,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:23:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:23:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 12:23:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-03-18 12:23:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-03-18 12:23:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-03-18 12:23:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-03-18 12:23:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-03-18 12:23:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-03-18 12:23:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-03-18 12:23:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-03-18 12:23:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-03-18 12:23:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-03-18 12:23:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-03-18 12:23:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-03-18 12:23:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-03-18 12:23:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-03-18 12:23:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-03-18 12:23:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-03-18 12:23:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-03-18 12:23:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-03-18 12:23:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-03-18 12:23:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-03-18 12:23:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-03-18 12:23:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-03-18 12:23:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-03-18 12:23:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-03-18 12:23:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-03-18 12:23:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-03-18 12:23:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-03-18 12:23:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-03-18 12:23:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-03-18 12:23:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-03-18 12:23:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-03-18 12:23:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-03-18 12:23:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-03-18 12:23:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-03-18 12:23:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-03-18 12:23:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-03-18 12:23:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-03-18 12:23:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-03-18 12:23:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-03-18 12:23:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-03-18 12:23:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-03-18 12:23:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-03-18 12:23:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-03-18 12:23:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-03-18 12:23:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-03-18 12:23:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-03-18 12:23:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-03-18 12:23:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-03-18 12:23:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-03-18 12:23:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-03-18 12:23:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-03-18 12:23:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-03-18 12:23:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-03-18 12:23:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-03-18 12:23:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-03-18 12:23:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-03-18 12:23:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-03-18 12:23:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-03-18 12:23:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-03-18 12:23:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2022-03-18 12:23:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-03-18 12:23:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-03-18 12:23:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-03-18 12:23:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-03-18 12:23:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-03-18 12:23:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-03-18 12:23:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-03-18 12:23:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2022-03-18 12:23:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-03-18 12:23:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2022-03-18 12:23:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-03-18 12:23:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2022-03-18 12:23:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-03-18 12:23:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2022-03-18 12:23:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-03-18 12:23:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 23180 backedges. 8628 proven. 3152 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2022-03-18 12:23:47,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:23:47,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923590204] [2022-03-18 12:23:47,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923590204] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:23:47,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166094626] [2022-03-18 12:23:47,539 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:23:47,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:23:47,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:23:47,540 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:23:47,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-03-18 12:23:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:23:47,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 156 conjunts are in the unsatisfiable core [2022-03-18 12:23:47,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:23:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 23180 backedges. 8854 proven. 2926 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2022-03-18 12:23:52,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:23:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 23180 backedges. 8854 proven. 2926 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2022-03-18 12:23:53,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166094626] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:23:53,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:23:53,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 157, 157] total 237 [2022-03-18 12:23:53,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368678718] [2022-03-18 12:23:53,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:23:53,281 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 237 states [2022-03-18 12:23:53,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:23:53,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2022-03-18 12:23:53,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12409, Invalid=43523, Unknown=0, NotChecked=0, Total=55932 [2022-03-18 12:23:53,284 INFO L87 Difference]: Start difference. First operand 624 states and 625 transitions. Second operand has 237 states, 237 states have (on average 1.6877637130801688) internal successors, (400), 236 states have internal predecessors, (400), 155 states have call successors, (157), 3 states have call predecessors, (157), 1 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2022-03-18 12:23:58,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:23:58,354 INFO L93 Difference]: Finished difference Result 864 states and 942 transitions. [2022-03-18 12:23:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-03-18 12:23:58,355 INFO L78 Accepts]: Start accepts. Automaton has has 237 states, 237 states have (on average 1.6877637130801688) internal successors, (400), 236 states have internal predecessors, (400), 155 states have call successors, (157), 3 states have call predecessors, (157), 1 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) Word has length 621 [2022-03-18 12:23:58,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:23:58,356 INFO L225 Difference]: With dead ends: 864 [2022-03-18 12:23:58,356 INFO L226 Difference]: Without dead ends: 625 [2022-03-18 12:23:58,362 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1707 GetRequests, 1316 SyntacticMatches, 1 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42645 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=27972, Invalid=125300, Unknown=0, NotChecked=0, Total=153272 [2022-03-18 12:23:58,362 INFO L912 BasicCegarLoop]: 88 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 3241 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 3241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 12:23:58,362 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 145 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 3241 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 12:23:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-03-18 12:23:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2022-03-18 12:23:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 467 states have (on average 1.0042826552462527) internal successors, (469), 468 states have internal predecessors, (469), 79 states have call successors, (79), 79 states have call predecessors, (79), 78 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2022-03-18 12:23:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 626 transitions. [2022-03-18 12:23:58,452 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 626 transitions. Word has length 621 [2022-03-18 12:23:58,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:23:58,452 INFO L478 AbstractCegarLoop]: Abstraction has 625 states and 626 transitions. [2022-03-18 12:23:58,452 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 237 states, 237 states have (on average 1.6877637130801688) internal successors, (400), 236 states have internal predecessors, (400), 155 states have call successors, (157), 3 states have call predecessors, (157), 1 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2022-03-18 12:23:58,452 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 626 transitions. [2022-03-18 12:23:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-03-18 12:23:58,455 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:23:58,455 INFO L500 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:23:58,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2022-03-18 12:23:58,660 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:23:58,660 INFO L403 AbstractCegarLoop]: === Iteration 154 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:23:58,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:23:58,661 INFO L85 PathProgramCache]: Analyzing trace with hash -844533074, now seen corresponding path program 152 times [2022-03-18 12:23:58,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:23:58,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054741396] [2022-03-18 12:23:58,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:23:58,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:23:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:24:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:24:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:24:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:24:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:24:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:24:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:24:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:24:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:24:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:24:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:24:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:24:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:24:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:24:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:24:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:24:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:24:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:24:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:24:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:24:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:24:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:24:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:24:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:24:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:24:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:24:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:24:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:24:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:24:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:24:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-03-18 12:24:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-18 12:24:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-03-18 12:24:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-18 12:24:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-03-18 12:24:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-18 12:24:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-03-18 12:24:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-18 12:24:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-03-18 12:24:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-18 12:24:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-03-18 12:24:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-18 12:24:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-03-18 12:24:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-18 12:24:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-03-18 12:24:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-18 12:24:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-03-18 12:24:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-18 12:24:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-03-18 12:24:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-18 12:24:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-03-18 12:24:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-18 12:24:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-03-18 12:24:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-18 12:24:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-03-18 12:24:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-18 12:24:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-03-18 12:24:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-18 12:24:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-03-18 12:24:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-18 12:24:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-03-18 12:24:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-03-18 12:24:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2022-03-18 12:24:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-03-18 12:24:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-03-18 12:24:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-03-18 12:24:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-03-18 12:24:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-03-18 12:24:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2022-03-18 12:24:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-03-18 12:24:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2022-03-18 12:24:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-03-18 12:24:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-03-18 12:24:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-03-18 12:24:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2022-03-18 12:24:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-03-18 12:24:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2022-03-18 12:24:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 23257 backedges. 3078 proven. 8779 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2022-03-18 12:24:00,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:24:00,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054741396] [2022-03-18 12:24:00,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054741396] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:24:00,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937452659] [2022-03-18 12:24:00,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:24:00,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:24:00,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:24:00,225 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:24:00,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-03-18 12:24:00,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:24:00,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:24:00,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 157 conjunts are in the unsatisfiable core [2022-03-18 12:24:00,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:24:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 23257 backedges. 3155 proven. 8702 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2022-03-18 12:24:00,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:24:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 23257 backedges. 3155 proven. 8702 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2022-03-18 12:24:01,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937452659] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:24:01,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:24:01,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82, 82] total 86 [2022-03-18 12:24:01,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586686054] [2022-03-18 12:24:01,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:24:01,420 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-03-18 12:24:01,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:24:01,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-03-18 12:24:01,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3175, Invalid=4135, Unknown=0, NotChecked=0, Total=7310 [2022-03-18 12:24:01,421 INFO L87 Difference]: Start difference. First operand 625 states and 626 transitions. Second operand has 86 states, 86 states have (on average 2.86046511627907) internal successors, (246), 83 states have internal predecessors, (246), 78 states have call successors, (81), 4 states have call predecessors, (81), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-03-18 12:24:02,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:24:02,956 INFO L93 Difference]: Finished difference Result 638 states and 640 transitions. [2022-03-18 12:24:02,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-18 12:24:02,957 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.86046511627907) internal successors, (246), 83 states have internal predecessors, (246), 78 states have call successors, (81), 4 states have call predecessors, (81), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Word has length 622 [2022-03-18 12:24:02,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:24:02,958 INFO L225 Difference]: With dead ends: 638 [2022-03-18 12:24:02,958 INFO L226 Difference]: Without dead ends: 636 [2022-03-18 12:24:02,960 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1638 GetRequests, 1470 SyntacticMatches, 2 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4551 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9517, Invalid=18539, Unknown=0, NotChecked=0, Total=28056 [2022-03-18 12:24:02,961 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 187 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:24:02,961 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 60 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:24:02,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-03-18 12:24:03,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 632. [2022-03-18 12:24:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 472 states have (on average 1.0042372881355932) internal successors, (474), 473 states have internal predecessors, (474), 80 states have call successors, (80), 80 states have call predecessors, (80), 79 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2022-03-18 12:24:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 633 transitions. [2022-03-18 12:24:03,074 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 633 transitions. Word has length 622 [2022-03-18 12:24:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:24:03,074 INFO L478 AbstractCegarLoop]: Abstraction has 632 states and 633 transitions. [2022-03-18 12:24:03,074 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.86046511627907) internal successors, (246), 83 states have internal predecessors, (246), 78 states have call successors, (81), 4 states have call predecessors, (81), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-03-18 12:24:03,074 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 633 transitions. [2022-03-18 12:24:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-03-18 12:24:03,077 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:24:03,077 INFO L500 BasicCegarLoop]: trace histogram [78, 78, 78, 77, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:24:03,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2022-03-18 12:24:03,295 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:24:03,296 INFO L403 AbstractCegarLoop]: === Iteration 155 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:24:03,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:24:03,296 INFO L85 PathProgramCache]: Analyzing trace with hash -544644604, now seen corresponding path program 153 times [2022-03-18 12:24:03,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:24:03,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446828692] [2022-03-18 12:24:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:24:03,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:24:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:24:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-03-18 12:24:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 12:24:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-03-18 12:24:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-03-18 12:24:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-03-18 12:24:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-03-18 12:24:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-03-18 12:24:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-03-18 12:24:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-03-18 12:24:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-03-18 12:24:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-03-18 12:24:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-03-18 12:24:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-03-18 12:24:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-03-18 12:24:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-03-18 12:24:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-03-18 12:24:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-03-18 12:24:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-03-18 12:24:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-03-18 12:24:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-03-18 12:24:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-03-18 12:24:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-03-18 12:24:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-03-18 12:24:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-03-18 12:24:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-03-18 12:24:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-03-18 12:24:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-03-18 12:24:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-03-18 12:24:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-03-18 12:24:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-03-18 12:24:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-03-18 12:24:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-03-18 12:24:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-03-18 12:24:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-03-18 12:24:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-03-18 12:24:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-03-18 12:24:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-03-18 12:24:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-03-18 12:24:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-03-18 12:24:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-03-18 12:24:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-03-18 12:24:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-03-18 12:24:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-03-18 12:24:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-03-18 12:24:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-03-18 12:24:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-03-18 12:24:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-03-18 12:24:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-03-18 12:24:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-03-18 12:24:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-03-18 12:24:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-03-18 12:24:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-03-18 12:24:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-03-18 12:24:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-03-18 12:24:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-03-18 12:24:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-03-18 12:24:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-03-18 12:24:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-03-18 12:24:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-03-18 12:24:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-03-18 12:24:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-03-18 12:24:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2022-03-18 12:24:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-03-18 12:24:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-03-18 12:24:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-03-18 12:24:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-03-18 12:24:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-03-18 12:24:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2022-03-18 12:24:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-03-18 12:24:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2022-03-18 12:24:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-03-18 12:24:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2022-03-18 12:24:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-03-18 12:24:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2022-03-18 12:24:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-03-18 12:24:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2022-03-18 12:24:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-03-18 12:24:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 23793 backedges. 8857 proven. 3232 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2022-03-18 12:24:07,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:24:07,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446828692] [2022-03-18 12:24:07,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446828692] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:24:07,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152271796] [2022-03-18 12:24:07,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:24:07,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:24:07,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:24:07,265 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:24:07,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-03-18 12:24:07,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 78 check-sat command(s) [2022-03-18 12:24:07,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:24:07,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 158 conjunts are in the unsatisfiable core [2022-03-18 12:24:07,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:24:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 23793 backedges. 9086 proven. 3003 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2022-03-18 12:24:16,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:24:17,228 INFO L134 CoverageAnalysis]: Checked inductivity of 23793 backedges. 9086 proven. 3003 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2022-03-18 12:24:17,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152271796] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:24:17,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:24:17,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 159, 159] total 240 [2022-03-18 12:24:17,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866960544] [2022-03-18 12:24:17,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:24:17,230 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 240 states [2022-03-18 12:24:17,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:24:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2022-03-18 12:24:17,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12726, Invalid=44634, Unknown=0, NotChecked=0, Total=57360 [2022-03-18 12:24:17,233 INFO L87 Difference]: Start difference. First operand 632 states and 633 transitions. Second operand has 240 states, 240 states have (on average 1.6875) internal successors, (405), 239 states have internal predecessors, (405), 157 states have call successors, (159), 3 states have call predecessors, (159), 1 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2022-03-18 12:24:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:24:22,952 INFO L93 Difference]: Finished difference Result 875 states and 954 transitions. [2022-03-18 12:24:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-03-18 12:24:22,952 INFO L78 Accepts]: Start accepts. Automaton has has 240 states, 240 states have (on average 1.6875) internal successors, (405), 239 states have internal predecessors, (405), 157 states have call successors, (159), 3 states have call predecessors, (159), 1 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Word has length 629 [2022-03-18 12:24:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:24:22,953 INFO L225 Difference]: With dead ends: 875 [2022-03-18 12:24:22,953 INFO L226 Difference]: Without dead ends: 633 [2022-03-18 12:24:22,960 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1729 GetRequests, 1333 SyntacticMatches, 1 SemanticMatches, 395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43745 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=28686, Invalid=128526, Unknown=0, NotChecked=0, Total=157212 [2022-03-18 12:24:22,960 INFO L912 BasicCegarLoop]: 89 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3800 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 4127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 3800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 12:24:22,960 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 136 Invalid, 4127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 3800 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 12:24:22,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-03-18 12:24:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2022-03-18 12:24:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 473 states have (on average 1.0042283298097252) internal successors, (475), 474 states have internal predecessors, (475), 80 states have call successors, (80), 80 states have call predecessors, (80), 79 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2022-03-18 12:24:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 634 transitions. [2022-03-18 12:24:23,053 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 634 transitions. Word has length 629 [2022-03-18 12:24:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:24:23,054 INFO L478 AbstractCegarLoop]: Abstraction has 633 states and 634 transitions. [2022-03-18 12:24:23,054 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 240 states, 240 states have (on average 1.6875) internal successors, (405), 239 states have internal predecessors, (405), 157 states have call successors, (159), 3 states have call predecessors, (159), 1 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2022-03-18 12:24:23,054 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 634 transitions. [2022-03-18 12:24:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2022-03-18 12:24:23,056 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:24:23,056 INFO L500 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:24:23,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2022-03-18 12:24:23,275 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:24:23,275 INFO L403 AbstractCegarLoop]: === Iteration 156 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:24:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:24:23,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1610500404, now seen corresponding path program 154 times [2022-03-18 12:24:23,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:24:23,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800609092] [2022-03-18 12:24:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:24:23,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:24:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:24:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:24:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:24:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:24:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:24:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:24:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:24:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:24:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:24:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:24:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:24:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:24:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:24:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:24:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:24:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:24:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:24:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:24:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:24:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:24:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:24:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:24:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:24:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:24:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:24:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:24:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:24:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:24:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:24:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:24:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:24:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-03-18 12:24:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-18 12:24:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-03-18 12:24:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-18 12:24:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-03-18 12:24:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-18 12:24:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-03-18 12:24:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-18 12:24:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-03-18 12:24:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-18 12:24:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-03-18 12:24:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-18 12:24:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-03-18 12:24:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-18 12:24:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-03-18 12:24:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-18 12:24:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-03-18 12:24:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-18 12:24:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-03-18 12:24:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-18 12:24:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-03-18 12:24:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-18 12:24:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-03-18 12:24:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-18 12:24:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-03-18 12:24:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-18 12:24:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-03-18 12:24:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-18 12:24:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-03-18 12:24:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-18 12:24:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-03-18 12:24:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-03-18 12:24:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2022-03-18 12:24:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-03-18 12:24:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-03-18 12:24:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-03-18 12:24:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-03-18 12:24:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-03-18 12:24:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2022-03-18 12:24:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-03-18 12:24:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2022-03-18 12:24:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-03-18 12:24:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2022-03-18 12:24:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-03-18 12:24:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2022-03-18 12:24:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-03-18 12:24:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2022-03-18 12:24:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 3157 proven. 9010 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2022-03-18 12:24:24,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:24:24,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800609092] [2022-03-18 12:24:24,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800609092] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:24:24,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138229382] [2022-03-18 12:24:24,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:24:24,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:24:24,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:24:24,939 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:24:24,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-03-18 12:24:25,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:24:25,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:24:25,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 159 conjunts are in the unsatisfiable core [2022-03-18 12:24:25,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:24:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 3235 proven. 8932 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2022-03-18 12:24:25,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:24:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 23871 backedges. 3235 proven. 8932 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2022-03-18 12:24:26,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138229382] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:24:26,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:24:26,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83, 83] total 87 [2022-03-18 12:24:26,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706754062] [2022-03-18 12:24:26,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:24:26,255 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-03-18 12:24:26,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:24:26,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-03-18 12:24:26,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3255, Invalid=4227, Unknown=0, NotChecked=0, Total=7482 [2022-03-18 12:24:26,256 INFO L87 Difference]: Start difference. First operand 633 states and 634 transitions. Second operand has 87 states, 87 states have (on average 2.8620689655172415) internal successors, (249), 84 states have internal predecessors, (249), 79 states have call successors, (82), 4 states have call predecessors, (82), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-03-18 12:24:27,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:24:27,882 INFO L93 Difference]: Finished difference Result 646 states and 648 transitions. [2022-03-18 12:24:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-18 12:24:27,883 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.8620689655172415) internal successors, (249), 84 states have internal predecessors, (249), 79 states have call successors, (82), 4 states have call predecessors, (82), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Word has length 630 [2022-03-18 12:24:27,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:24:27,884 INFO L225 Difference]: With dead ends: 646 [2022-03-18 12:24:27,884 INFO L226 Difference]: Without dead ends: 644 [2022-03-18 12:24:27,885 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1659 GetRequests, 1489 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4649 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9757, Invalid=18973, Unknown=0, NotChecked=0, Total=28730 [2022-03-18 12:24:27,885 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 195 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:24:27,885 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 55 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:24:27,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-03-18 12:24:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 640. [2022-03-18 12:24:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 478 states have (on average 1.00418410041841) internal successors, (480), 479 states have internal predecessors, (480), 81 states have call successors, (81), 81 states have call predecessors, (81), 80 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2022-03-18 12:24:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 641 transitions. [2022-03-18 12:24:27,999 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 641 transitions. Word has length 630 [2022-03-18 12:24:27,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:24:27,999 INFO L478 AbstractCegarLoop]: Abstraction has 640 states and 641 transitions. [2022-03-18 12:24:27,999 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.8620689655172415) internal successors, (249), 84 states have internal predecessors, (249), 79 states have call successors, (82), 4 states have call predecessors, (82), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-03-18 12:24:27,999 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 641 transitions. [2022-03-18 12:24:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-03-18 12:24:28,002 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:24:28,002 INFO L500 BasicCegarLoop]: trace histogram [79, 79, 79, 78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:24:28,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-03-18 12:24:28,220 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:24:28,220 INFO L403 AbstractCegarLoop]: === Iteration 157 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:24:28,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:24:28,221 INFO L85 PathProgramCache]: Analyzing trace with hash 914350118, now seen corresponding path program 155 times [2022-03-18 12:24:28,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:24:28,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516770270] [2022-03-18 12:24:28,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:24:28,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:24:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:24:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-03-18 12:24:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-03-18 12:24:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-03-18 12:24:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-03-18 12:24:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-03-18 12:24:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-03-18 12:24:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-03-18 12:24:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-03-18 12:24:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-03-18 12:24:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-03-18 12:24:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-03-18 12:24:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-03-18 12:24:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-03-18 12:24:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-03-18 12:24:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-03-18 12:24:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-03-18 12:24:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-03-18 12:24:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-03-18 12:24:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-03-18 12:24:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-03-18 12:24:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-03-18 12:24:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-03-18 12:24:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-03-18 12:24:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-03-18 12:24:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-03-18 12:24:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-03-18 12:24:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-03-18 12:24:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-03-18 12:24:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-03-18 12:24:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-03-18 12:24:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-03-18 12:24:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-03-18 12:24:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-03-18 12:24:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-03-18 12:24:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-03-18 12:24:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-03-18 12:24:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-03-18 12:24:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-03-18 12:24:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-03-18 12:24:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-03-18 12:24:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-03-18 12:24:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-03-18 12:24:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-03-18 12:24:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-03-18 12:24:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-03-18 12:24:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-03-18 12:24:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-03-18 12:24:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-03-18 12:24:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-03-18 12:24:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-03-18 12:24:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-03-18 12:24:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-03-18 12:24:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-03-18 12:24:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-03-18 12:24:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-03-18 12:24:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-03-18 12:24:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-03-18 12:24:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-03-18 12:24:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-03-18 12:24:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-03-18 12:24:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-03-18 12:24:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-03-18 12:24:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2022-03-18 12:24:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-03-18 12:24:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-03-18 12:24:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-03-18 12:24:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-03-18 12:24:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-03-18 12:24:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2022-03-18 12:24:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-03-18 12:24:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2022-03-18 12:24:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-03-18 12:24:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2022-03-18 12:24:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-03-18 12:24:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2022-03-18 12:24:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-03-18 12:24:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2022-03-18 12:24:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-03-18 12:24:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 24414 backedges. 9089 proven. 3313 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2022-03-18 12:24:32,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:24:32,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516770270] [2022-03-18 12:24:32,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516770270] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:24:32,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149348619] [2022-03-18 12:24:32,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:24:32,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:24:32,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:24:32,103 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:24:32,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-03-18 12:24:32,496 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2022-03-18 12:24:32,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:24:32,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 160 conjunts are in the unsatisfiable core [2022-03-18 12:24:32,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:24:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 24414 backedges. 9321 proven. 3081 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2022-03-18 12:24:37,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:24:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 24414 backedges. 9321 proven. 3081 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2022-03-18 12:24:38,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149348619] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:24:38,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:24:38,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [162, 161, 161] total 243 [2022-03-18 12:24:38,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677150882] [2022-03-18 12:24:38,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:24:38,497 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 243 states [2022-03-18 12:24:38,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:24:38,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2022-03-18 12:24:38,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13047, Invalid=45759, Unknown=0, NotChecked=0, Total=58806 [2022-03-18 12:24:38,501 INFO L87 Difference]: Start difference. First operand 640 states and 641 transitions. Second operand has 243 states, 243 states have (on average 1.6872427983539096) internal successors, (410), 242 states have internal predecessors, (410), 159 states have call successors, (161), 3 states have call predecessors, (161), 1 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2022-03-18 12:24:44,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:24:44,813 INFO L93 Difference]: Finished difference Result 886 states and 966 transitions. [2022-03-18 12:24:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-03-18 12:24:44,813 INFO L78 Accepts]: Start accepts. Automaton has has 243 states, 243 states have (on average 1.6872427983539096) internal successors, (410), 242 states have internal predecessors, (410), 159 states have call successors, (161), 3 states have call predecessors, (161), 1 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) Word has length 637 [2022-03-18 12:24:44,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:24:44,814 INFO L225 Difference]: With dead ends: 886 [2022-03-18 12:24:44,814 INFO L226 Difference]: Without dead ends: 641 [2022-03-18 12:24:44,822 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1751 GetRequests, 1350 SyntacticMatches, 1 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44859 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=29409, Invalid=131793, Unknown=0, NotChecked=0, Total=161202 [2022-03-18 12:24:44,823 INFO L912 BasicCegarLoop]: 90 mSDtfsCounter, 21 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4947 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 5279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 4947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:24:44,823 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 172 Invalid, 5279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 4947 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 12:24:44,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-03-18 12:24:44,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2022-03-18 12:24:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 479 states have (on average 1.0041753653444676) internal successors, (481), 480 states have internal predecessors, (481), 81 states have call successors, (81), 81 states have call predecessors, (81), 80 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2022-03-18 12:24:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 642 transitions. [2022-03-18 12:24:44,943 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 642 transitions. Word has length 637 [2022-03-18 12:24:44,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:24:44,943 INFO L478 AbstractCegarLoop]: Abstraction has 641 states and 642 transitions. [2022-03-18 12:24:44,943 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 243 states, 243 states have (on average 1.6872427983539096) internal successors, (410), 242 states have internal predecessors, (410), 159 states have call successors, (161), 3 states have call predecessors, (161), 1 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2022-03-18 12:24:44,943 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 642 transitions. [2022-03-18 12:24:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2022-03-18 12:24:44,946 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:24:44,946 INFO L500 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:24:44,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2022-03-18 12:24:45,163 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-03-18 12:24:45,163 INFO L403 AbstractCegarLoop]: === Iteration 158 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:24:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:24:45,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1222307054, now seen corresponding path program 156 times [2022-03-18 12:24:45,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:24:45,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496787468] [2022-03-18 12:24:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:24:45,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:24:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:24:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:24:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:24:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:24:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:24:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:24:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:24:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:24:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:24:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:24:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:24:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:24:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:24:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:24:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:24:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:24:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:24:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:24:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:24:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:24:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:24:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:24:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:24:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:24:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:24:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:24:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:24:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:24:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:24:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:24:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:24:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:24:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-03-18 12:24:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-18 12:24:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-03-18 12:24:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-18 12:24:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-03-18 12:24:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-18 12:24:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-03-18 12:24:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-18 12:24:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-03-18 12:24:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-18 12:24:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-03-18 12:24:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-18 12:24:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-03-18 12:24:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-18 12:24:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-03-18 12:24:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-18 12:24:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-03-18 12:24:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-18 12:24:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-03-18 12:24:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-18 12:24:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-03-18 12:24:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-18 12:24:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-03-18 12:24:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-18 12:24:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-03-18 12:24:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-18 12:24:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-03-18 12:24:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-03-18 12:24:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-03-18 12:24:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-18 12:24:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-03-18 12:24:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-03-18 12:24:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2022-03-18 12:24:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-03-18 12:24:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-03-18 12:24:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-03-18 12:24:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-03-18 12:24:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-03-18 12:24:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2022-03-18 12:24:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-03-18 12:24:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2022-03-18 12:24:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-03-18 12:24:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2022-03-18 12:24:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-03-18 12:24:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2022-03-18 12:24:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-03-18 12:24:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2022-03-18 12:24:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 24493 backedges. 3237 proven. 9244 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2022-03-18 12:24:46,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:24:46,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496787468] [2022-03-18 12:24:46,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496787468] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:24:46,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414944036] [2022-03-18 12:24:46,703 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:24:46,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:24:46,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:24:46,704 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:24:46,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-03-18 12:24:47,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2022-03-18 12:24:47,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:24:47,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 161 conjunts are in the unsatisfiable core [2022-03-18 12:24:47,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:24:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 24493 backedges. 3316 proven. 9165 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2022-03-18 12:24:47,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:24:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 24493 backedges. 3316 proven. 9165 refuted. 0 times theorem prover too weak. 12012 trivial. 0 not checked. [2022-03-18 12:24:48,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414944036] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:24:48,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:24:48,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84, 84] total 88 [2022-03-18 12:24:48,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045690945] [2022-03-18 12:24:48,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:24:48,185 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-03-18 12:24:48,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:24:48,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-03-18 12:24:48,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3336, Invalid=4320, Unknown=0, NotChecked=0, Total=7656 [2022-03-18 12:24:48,186 INFO L87 Difference]: Start difference. First operand 641 states and 642 transitions. Second operand has 88 states, 88 states have (on average 2.8636363636363638) internal successors, (252), 85 states have internal predecessors, (252), 80 states have call successors, (83), 4 states have call predecessors, (83), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-03-18 12:24:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:24:49,834 INFO L93 Difference]: Finished difference Result 654 states and 656 transitions. [2022-03-18 12:24:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-18 12:24:49,835 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.8636363636363638) internal successors, (252), 85 states have internal predecessors, (252), 80 states have call successors, (83), 4 states have call predecessors, (83), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Word has length 638 [2022-03-18 12:24:49,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:24:49,836 INFO L225 Difference]: With dead ends: 654 [2022-03-18 12:24:49,836 INFO L226 Difference]: Without dead ends: 652 [2022-03-18 12:24:49,838 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1680 GetRequests, 1508 SyntacticMatches, 2 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4748 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=10000, Invalid=19412, Unknown=0, NotChecked=0, Total=29412 [2022-03-18 12:24:49,838 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 187 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:24:49,838 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 50 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1766 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:24:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-03-18 12:24:49,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 648. [2022-03-18 12:24:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 484 states have (on average 1.0041322314049588) internal successors, (486), 485 states have internal predecessors, (486), 82 states have call successors, (82), 82 states have call predecessors, (82), 81 states have return successors, (81), 80 states have call predecessors, (81), 81 states have call successors, (81) [2022-03-18 12:24:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 649 transitions. [2022-03-18 12:24:49,935 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 649 transitions. Word has length 638 [2022-03-18 12:24:49,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:24:49,935 INFO L478 AbstractCegarLoop]: Abstraction has 648 states and 649 transitions. [2022-03-18 12:24:49,935 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.8636363636363638) internal successors, (252), 85 states have internal predecessors, (252), 80 states have call successors, (83), 4 states have call predecessors, (83), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-03-18 12:24:49,935 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 649 transitions. [2022-03-18 12:24:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2022-03-18 12:24:49,938 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:24:49,938 INFO L500 BasicCegarLoop]: trace histogram [80, 80, 80, 79, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:24:49,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2022-03-18 12:24:50,151 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-03-18 12:24:50,151 INFO L403 AbstractCegarLoop]: === Iteration 159 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:24:50,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:24:50,152 INFO L85 PathProgramCache]: Analyzing trace with hash -488251452, now seen corresponding path program 157 times [2022-03-18 12:24:50,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:24:50,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045295760] [2022-03-18 12:24:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:24:50,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:24:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:24:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-03-18 12:24:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-03-18 12:24:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-03-18 12:24:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-03-18 12:24:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-03-18 12:24:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-03-18 12:24:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-03-18 12:24:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-03-18 12:24:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-03-18 12:24:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-03-18 12:24:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-03-18 12:24:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-03-18 12:24:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-03-18 12:24:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-03-18 12:24:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-03-18 12:24:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-03-18 12:24:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-03-18 12:24:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-03-18 12:24:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-03-18 12:24:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-03-18 12:24:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-03-18 12:24:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-03-18 12:24:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-03-18 12:24:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-03-18 12:24:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-03-18 12:24:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-03-18 12:24:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-03-18 12:24:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-03-18 12:24:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-03-18 12:24:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-03-18 12:24:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-03-18 12:24:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-03-18 12:24:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-03-18 12:24:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-03-18 12:24:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-03-18 12:24:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-03-18 12:24:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-03-18 12:24:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-03-18 12:24:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-03-18 12:24:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-03-18 12:24:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-03-18 12:24:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-03-18 12:24:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-03-18 12:24:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-03-18 12:24:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-03-18 12:24:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-03-18 12:24:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-03-18 12:24:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-03-18 12:24:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-03-18 12:24:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-03-18 12:24:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-03-18 12:24:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-03-18 12:24:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-03-18 12:24:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-03-18 12:24:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-03-18 12:24:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-03-18 12:24:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-03-18 12:24:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-03-18 12:24:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-03-18 12:24:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-03-18 12:24:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-03-18 12:24:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-03-18 12:24:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-03-18 12:24:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2022-03-18 12:24:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-03-18 12:24:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-03-18 12:24:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-03-18 12:24:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-03-18 12:24:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-03-18 12:24:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2022-03-18 12:24:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-03-18 12:24:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2022-03-18 12:24:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-03-18 12:24:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2022-03-18 12:24:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-03-18 12:24:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2022-03-18 12:24:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-03-18 12:24:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2022-03-18 12:24:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2022-03-18 12:24:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 25043 backedges. 9324 proven. 3395 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2022-03-18 12:24:54,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:24:54,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045295760] [2022-03-18 12:24:54,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045295760] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:24:54,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754105492] [2022-03-18 12:24:54,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:24:54,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:24:54,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:24:54,252 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:24:54,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-03-18 12:24:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:24:54,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 162 conjunts are in the unsatisfiable core [2022-03-18 12:24:54,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:25:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 25043 backedges. 9559 proven. 3160 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2022-03-18 12:25:01,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:25:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 25043 backedges. 9559 proven. 3160 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2022-03-18 12:25:02,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754105492] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:25:02,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:25:02,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [164, 163, 163] total 246 [2022-03-18 12:25:02,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483297303] [2022-03-18 12:25:02,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:25:02,990 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 246 states [2022-03-18 12:25:02,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:25:02,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2022-03-18 12:25:02,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13372, Invalid=46898, Unknown=0, NotChecked=0, Total=60270 [2022-03-18 12:25:02,996 INFO L87 Difference]: Start difference. First operand 648 states and 649 transitions. Second operand has 246 states, 246 states have (on average 1.6869918699186992) internal successors, (415), 245 states have internal predecessors, (415), 161 states have call successors, (163), 3 states have call predecessors, (163), 1 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2022-03-18 12:25:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:25:09,461 INFO L93 Difference]: Finished difference Result 897 states and 978 transitions. [2022-03-18 12:25:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-03-18 12:25:09,462 INFO L78 Accepts]: Start accepts. Automaton has has 246 states, 246 states have (on average 1.6869918699186992) internal successors, (415), 245 states have internal predecessors, (415), 161 states have call successors, (163), 3 states have call predecessors, (163), 1 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Word has length 645 [2022-03-18 12:25:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:25:09,463 INFO L225 Difference]: With dead ends: 897 [2022-03-18 12:25:09,463 INFO L226 Difference]: Without dead ends: 649 [2022-03-18 12:25:09,469 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1773 GetRequests, 1367 SyntacticMatches, 1 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45987 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=30141, Invalid=135101, Unknown=0, NotChecked=0, Total=165242 [2022-03-18 12:25:09,470 INFO L912 BasicCegarLoop]: 91 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 3962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:25:09,470 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 138 Invalid, 3962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 3633 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 12:25:09,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-03-18 12:25:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 649. [2022-03-18 12:25:09,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 485 states have (on average 1.0041237113402062) internal successors, (487), 486 states have internal predecessors, (487), 82 states have call successors, (82), 82 states have call predecessors, (82), 81 states have return successors, (81), 80 states have call predecessors, (81), 81 states have call successors, (81) [2022-03-18 12:25:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 650 transitions. [2022-03-18 12:25:09,567 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 650 transitions. Word has length 645 [2022-03-18 12:25:09,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:25:09,567 INFO L478 AbstractCegarLoop]: Abstraction has 649 states and 650 transitions. [2022-03-18 12:25:09,567 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 246 states, 246 states have (on average 1.6869918699186992) internal successors, (415), 245 states have internal predecessors, (415), 161 states have call successors, (163), 3 states have call predecessors, (163), 1 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2022-03-18 12:25:09,567 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 650 transitions. [2022-03-18 12:25:09,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2022-03-18 12:25:09,570 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:25:09,570 INFO L500 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:25:09,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-03-18 12:25:09,783 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-03-18 12:25:09,784 INFO L403 AbstractCegarLoop]: === Iteration 160 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:25:09,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:25:09,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1961600140, now seen corresponding path program 158 times [2022-03-18 12:25:09,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:25:09,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836325605] [2022-03-18 12:25:09,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:25:09,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:25:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:25:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:25:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:25:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:25:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:25:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:25:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:25:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:25:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:25:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:25:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:25:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:25:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:25:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:25:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:25:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:25:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:25:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:25:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:25:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:25:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:25:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:25:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:25:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:25:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:25:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:25:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:25:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:25:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:25:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:25:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:25:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:25:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:25:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-03-18 12:25:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-18 12:25:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-03-18 12:25:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-18 12:25:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-03-18 12:25:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-18 12:25:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-03-18 12:25:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-18 12:25:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-03-18 12:25:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-18 12:25:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-03-18 12:25:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-18 12:25:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-03-18 12:25:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-18 12:25:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-03-18 12:25:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-18 12:25:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-03-18 12:25:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-18 12:25:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-03-18 12:25:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-18 12:25:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-03-18 12:25:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-18 12:25:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-03-18 12:25:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-18 12:25:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-03-18 12:25:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-18 12:25:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-03-18 12:25:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-03-18 12:25:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-03-18 12:25:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-03-18 12:25:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-03-18 12:25:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-03-18 12:25:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2022-03-18 12:25:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-03-18 12:25:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-03-18 12:25:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-03-18 12:25:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-03-18 12:25:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-03-18 12:25:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2022-03-18 12:25:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-03-18 12:25:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2022-03-18 12:25:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-03-18 12:25:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2022-03-18 12:25:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2022-03-18 12:25:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 621 [2022-03-18 12:25:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-03-18 12:25:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2022-03-18 12:25:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 25123 backedges. 3318 proven. 9481 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2022-03-18 12:25:11,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:25:11,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836325605] [2022-03-18 12:25:11,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836325605] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:25:11,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895876436] [2022-03-18 12:25:11,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 12:25:11,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:25:11,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:25:11,494 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:25:11,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-03-18 12:25:11,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 12:25:11,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:25:11,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 163 conjunts are in the unsatisfiable core [2022-03-18 12:25:11,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:25:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 25123 backedges. 3398 proven. 9401 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2022-03-18 12:25:12,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:25:12,749 INFO L134 CoverageAnalysis]: Checked inductivity of 25123 backedges. 3398 proven. 9401 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2022-03-18 12:25:12,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895876436] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:25:12,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:25:12,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85, 85] total 89 [2022-03-18 12:25:12,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669737299] [2022-03-18 12:25:12,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:25:12,750 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-03-18 12:25:12,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:25:12,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-03-18 12:25:12,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3418, Invalid=4414, Unknown=0, NotChecked=0, Total=7832 [2022-03-18 12:25:12,751 INFO L87 Difference]: Start difference. First operand 649 states and 650 transitions. Second operand has 89 states, 89 states have (on average 2.865168539325843) internal successors, (255), 86 states have internal predecessors, (255), 81 states have call successors, (84), 4 states have call predecessors, (84), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-03-18 12:25:14,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:25:14,405 INFO L93 Difference]: Finished difference Result 662 states and 664 transitions. [2022-03-18 12:25:14,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-18 12:25:14,405 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.865168539325843) internal successors, (255), 86 states have internal predecessors, (255), 81 states have call successors, (84), 4 states have call predecessors, (84), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 646 [2022-03-18 12:25:14,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:25:14,406 INFO L225 Difference]: With dead ends: 662 [2022-03-18 12:25:14,406 INFO L226 Difference]: Without dead ends: 660 [2022-03-18 12:25:14,407 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1701 GetRequests, 1527 SyntacticMatches, 2 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4848 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=10246, Invalid=19856, Unknown=0, NotChecked=0, Total=30102 [2022-03-18 12:25:14,407 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 193 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 2351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:25:14,407 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 90 Invalid, 2351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:25:14,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-03-18 12:25:14,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 656. [2022-03-18 12:25:14,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 490 states have (on average 1.0040816326530613) internal successors, (492), 491 states have internal predecessors, (492), 83 states have call successors, (83), 83 states have call predecessors, (83), 82 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2022-03-18 12:25:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 657 transitions. [2022-03-18 12:25:14,504 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 657 transitions. Word has length 646 [2022-03-18 12:25:14,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:25:14,504 INFO L478 AbstractCegarLoop]: Abstraction has 656 states and 657 transitions. [2022-03-18 12:25:14,504 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.865168539325843) internal successors, (255), 86 states have internal predecessors, (255), 81 states have call successors, (84), 4 states have call predecessors, (84), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-03-18 12:25:14,504 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 657 transitions. [2022-03-18 12:25:14,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2022-03-18 12:25:14,507 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:25:14,507 INFO L500 BasicCegarLoop]: trace histogram [81, 81, 81, 80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:25:14,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-03-18 12:25:14,716 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:25:14,717 INFO L403 AbstractCegarLoop]: === Iteration 161 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:25:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:25:14,717 INFO L85 PathProgramCache]: Analyzing trace with hash 417528422, now seen corresponding path program 159 times [2022-03-18 12:25:14,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:25:14,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259717739] [2022-03-18 12:25:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:25:14,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:25:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:25:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-03-18 12:25:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-03-18 12:25:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-03-18 12:25:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-03-18 12:25:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-03-18 12:25:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-03-18 12:25:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-03-18 12:25:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-03-18 12:25:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-03-18 12:25:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-03-18 12:25:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-03-18 12:25:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-03-18 12:25:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-03-18 12:25:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-03-18 12:25:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-03-18 12:25:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-03-18 12:25:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-03-18 12:25:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-03-18 12:25:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-03-18 12:25:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-03-18 12:25:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-03-18 12:25:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-03-18 12:25:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-03-18 12:25:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-03-18 12:25:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-03-18 12:25:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-03-18 12:25:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-03-18 12:25:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-03-18 12:25:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-03-18 12:25:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-03-18 12:25:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-03-18 12:25:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-03-18 12:25:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-03-18 12:25:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-03-18 12:25:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-03-18 12:25:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-03-18 12:25:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-03-18 12:25:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-03-18 12:25:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-03-18 12:25:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-03-18 12:25:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-03-18 12:25:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-03-18 12:25:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-03-18 12:25:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-03-18 12:25:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-03-18 12:25:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-03-18 12:25:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-03-18 12:25:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-03-18 12:25:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-03-18 12:25:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-03-18 12:25:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-03-18 12:25:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-03-18 12:25:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-03-18 12:25:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-03-18 12:25:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-03-18 12:25:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-03-18 12:25:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-03-18 12:25:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-03-18 12:25:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-03-18 12:25:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-03-18 12:25:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-03-18 12:25:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-03-18 12:25:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-03-18 12:25:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-03-18 12:25:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2022-03-18 12:25:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-03-18 12:25:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-03-18 12:25:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-03-18 12:25:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-03-18 12:25:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-03-18 12:25:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2022-03-18 12:25:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-03-18 12:25:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2022-03-18 12:25:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-03-18 12:25:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2022-03-18 12:25:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2022-03-18 12:25:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 621 [2022-03-18 12:25:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-03-18 12:25:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2022-03-18 12:25:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2022-03-18 12:25:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 25680 backedges. 9562 proven. 3478 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2022-03-18 12:25:18,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:25:18,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259717739] [2022-03-18 12:25:18,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259717739] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:25:18,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128885426] [2022-03-18 12:25:18,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 12:25:18,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:25:18,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:25:18,969 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:25:18,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-03-18 12:25:19,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 81 check-sat command(s) [2022-03-18 12:25:19,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:25:19,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 164 conjunts are in the unsatisfiable core [2022-03-18 12:25:19,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:25:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 25680 backedges. 9800 proven. 3240 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2022-03-18 12:25:26,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:25:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 25680 backedges. 9800 proven. 3240 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2022-03-18 12:25:26,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128885426] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:25:26,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:25:26,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [166, 165, 165] total 249 [2022-03-18 12:25:26,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789440652] [2022-03-18 12:25:26,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:25:26,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 249 states [2022-03-18 12:25:26,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:25:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2022-03-18 12:25:26,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13701, Invalid=48051, Unknown=0, NotChecked=0, Total=61752 [2022-03-18 12:25:26,744 INFO L87 Difference]: Start difference. First operand 656 states and 657 transitions. Second operand has 249 states, 249 states have (on average 1.6867469879518073) internal successors, (420), 248 states have internal predecessors, (420), 163 states have call successors, (165), 3 states have call predecessors, (165), 1 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2022-03-18 12:25:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:25:33,001 INFO L93 Difference]: Finished difference Result 908 states and 990 transitions. [2022-03-18 12:25:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-03-18 12:25:33,001 INFO L78 Accepts]: Start accepts. Automaton has has 249 states, 249 states have (on average 1.6867469879518073) internal successors, (420), 248 states have internal predecessors, (420), 163 states have call successors, (165), 3 states have call predecessors, (165), 1 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) Word has length 653 [2022-03-18 12:25:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:25:33,015 INFO L225 Difference]: With dead ends: 908 [2022-03-18 12:25:33,016 INFO L226 Difference]: Without dead ends: 657 [2022-03-18 12:25:33,022 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1795 GetRequests, 1384 SyntacticMatches, 1 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47129 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=30882, Invalid=138450, Unknown=0, NotChecked=0, Total=169332 [2022-03-18 12:25:33,022 INFO L912 BasicCegarLoop]: 92 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5152 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 5489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 5152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:25:33,022 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 154 Invalid, 5489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 5152 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 12:25:33,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-03-18 12:25:33,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2022-03-18 12:25:33,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 491 states have (on average 1.0040733197556009) internal successors, (493), 492 states have internal predecessors, (493), 83 states have call successors, (83), 83 states have call predecessors, (83), 82 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2022-03-18 12:25:33,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 658 transitions. [2022-03-18 12:25:33,144 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 658 transitions. Word has length 653 [2022-03-18 12:25:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:25:33,144 INFO L478 AbstractCegarLoop]: Abstraction has 657 states and 658 transitions. [2022-03-18 12:25:33,144 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 249 states, 249 states have (on average 1.6867469879518073) internal successors, (420), 248 states have internal predecessors, (420), 163 states have call successors, (165), 3 states have call predecessors, (165), 1 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2022-03-18 12:25:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 658 transitions. [2022-03-18 12:25:33,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2022-03-18 12:25:33,147 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:25:33,147 INFO L500 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:25:33,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2022-03-18 12:25:33,363 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:25:33,363 INFO L403 AbstractCegarLoop]: === Iteration 162 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:25:33,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:25:33,364 INFO L85 PathProgramCache]: Analyzing trace with hash 274429742, now seen corresponding path program 160 times [2022-03-18 12:25:33,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:25:33,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921181244] [2022-03-18 12:25:33,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:25:33,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:25:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:25:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:25:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:25:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:25:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:25:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:25:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:25:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:25:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:25:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:25:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:25:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:25:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:34,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:25:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:25:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:25:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:25:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:25:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:25:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:25:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:25:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:25:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:25:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:25:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:25:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:25:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:25:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:25:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:25:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:25:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:25:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:25:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:25:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:25:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:25:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-03-18 12:25:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-18 12:25:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-03-18 12:25:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-18 12:25:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-03-18 12:25:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-18 12:25:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-03-18 12:25:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-18 12:25:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-03-18 12:25:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-18 12:25:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-03-18 12:25:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-18 12:25:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-03-18 12:25:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-18 12:25:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-03-18 12:25:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-18 12:25:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-03-18 12:25:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-18 12:25:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-03-18 12:25:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-18 12:25:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-03-18 12:25:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-18 12:25:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-03-18 12:25:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-18 12:25:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-03-18 12:25:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-18 12:25:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-03-18 12:25:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-03-18 12:25:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-03-18 12:25:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-03-18 12:25:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-03-18 12:25:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-03-18 12:25:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2022-03-18 12:25:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-03-18 12:25:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-03-18 12:25:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-03-18 12:25:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-03-18 12:25:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-03-18 12:25:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2022-03-18 12:25:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-03-18 12:25:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2022-03-18 12:25:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-03-18 12:25:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2022-03-18 12:25:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2022-03-18 12:25:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2022-03-18 12:25:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-03-18 12:25:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2022-03-18 12:25:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 25761 backedges. 3400 proven. 9721 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2022-03-18 12:25:35,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:25:35,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921181244] [2022-03-18 12:25:35,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921181244] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:25:35,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032926596] [2022-03-18 12:25:35,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 12:25:35,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:25:35,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:25:35,090 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:25:35,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-03-18 12:25:35,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 12:25:35,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:25:35,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 165 conjunts are in the unsatisfiable core [2022-03-18 12:25:35,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:25:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 25761 backedges. 3481 proven. 9640 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2022-03-18 12:25:35,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:25:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 25761 backedges. 3481 proven. 9640 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2022-03-18 12:25:36,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032926596] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:25:36,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:25:36,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86, 86] total 90 [2022-03-18 12:25:36,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460730362] [2022-03-18 12:25:36,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:25:36,421 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-03-18 12:25:36,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:25:36,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-03-18 12:25:36,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3501, Invalid=4509, Unknown=0, NotChecked=0, Total=8010 [2022-03-18 12:25:36,422 INFO L87 Difference]: Start difference. First operand 657 states and 658 transitions. Second operand has 90 states, 90 states have (on average 2.8666666666666667) internal successors, (258), 87 states have internal predecessors, (258), 82 states have call successors, (85), 4 states have call predecessors, (85), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-03-18 12:25:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:25:38,094 INFO L93 Difference]: Finished difference Result 670 states and 672 transitions. [2022-03-18 12:25:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-03-18 12:25:38,094 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.8666666666666667) internal successors, (258), 87 states have internal predecessors, (258), 82 states have call successors, (85), 4 states have call predecessors, (85), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Word has length 654 [2022-03-18 12:25:38,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:25:38,096 INFO L225 Difference]: With dead ends: 670 [2022-03-18 12:25:38,096 INFO L226 Difference]: Without dead ends: 668 [2022-03-18 12:25:38,097 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1722 GetRequests, 1546 SyntacticMatches, 2 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4949 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=10495, Invalid=20305, Unknown=0, NotChecked=0, Total=30800 [2022-03-18 12:25:38,098 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 191 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:25:38,098 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 65 Invalid, 2267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:25:38,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-03-18 12:25:38,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 664. [2022-03-18 12:25:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 496 states have (on average 1.0040322580645162) internal successors, (498), 497 states have internal predecessors, (498), 84 states have call successors, (84), 84 states have call predecessors, (84), 83 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2022-03-18 12:25:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 665 transitions. [2022-03-18 12:25:38,197 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 665 transitions. Word has length 654 [2022-03-18 12:25:38,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:25:38,198 INFO L478 AbstractCegarLoop]: Abstraction has 664 states and 665 transitions. [2022-03-18 12:25:38,198 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.8666666666666667) internal successors, (258), 87 states have internal predecessors, (258), 82 states have call successors, (85), 4 states have call predecessors, (85), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-03-18 12:25:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 665 transitions. [2022-03-18 12:25:38,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2022-03-18 12:25:38,201 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:25:38,201 INFO L500 BasicCegarLoop]: trace histogram [82, 82, 82, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:25:38,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2022-03-18 12:25:38,418 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2022-03-18 12:25:38,419 INFO L403 AbstractCegarLoop]: === Iteration 163 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:25:38,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:25:38,419 INFO L85 PathProgramCache]: Analyzing trace with hash 98651524, now seen corresponding path program 161 times [2022-03-18 12:25:38,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:25:38,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882276007] [2022-03-18 12:25:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:25:38,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:25:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:25:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-03-18 12:25:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-03-18 12:25:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-03-18 12:25:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-03-18 12:25:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-03-18 12:25:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-03-18 12:25:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-03-18 12:25:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-03-18 12:25:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-03-18 12:25:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-03-18 12:25:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-03-18 12:25:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-03-18 12:25:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-03-18 12:25:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-03-18 12:25:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-03-18 12:25:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-03-18 12:25:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-03-18 12:25:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-03-18 12:25:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-03-18 12:25:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-03-18 12:25:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-03-18 12:25:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-03-18 12:25:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-03-18 12:25:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-03-18 12:25:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-03-18 12:25:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-03-18 12:25:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-03-18 12:25:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-03-18 12:25:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-03-18 12:25:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-03-18 12:25:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-03-18 12:25:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-03-18 12:25:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-03-18 12:25:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-03-18 12:25:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-03-18 12:25:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-03-18 12:25:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-03-18 12:25:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-03-18 12:25:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-03-18 12:25:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-03-18 12:25:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-03-18 12:25:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-03-18 12:25:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-03-18 12:25:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-03-18 12:25:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-03-18 12:25:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-03-18 12:25:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-03-18 12:25:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-03-18 12:25:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-03-18 12:25:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-03-18 12:25:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-03-18 12:25:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-03-18 12:25:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-03-18 12:25:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-03-18 12:25:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-03-18 12:25:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-03-18 12:25:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-03-18 12:25:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-03-18 12:25:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-03-18 12:25:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-03-18 12:25:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-03-18 12:25:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-03-18 12:25:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-03-18 12:25:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-03-18 12:25:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-03-18 12:25:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2022-03-18 12:25:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-03-18 12:25:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-03-18 12:25:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-03-18 12:25:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-03-18 12:25:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-03-18 12:25:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2022-03-18 12:25:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-03-18 12:25:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2022-03-18 12:25:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-03-18 12:25:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2022-03-18 12:25:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2022-03-18 12:25:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2022-03-18 12:25:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-03-18 12:25:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2022-03-18 12:25:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2022-03-18 12:25:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:42,601 INFO L134 CoverageAnalysis]: Checked inductivity of 26325 backedges. 9803 proven. 3562 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2022-03-18 12:25:42,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:25:42,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882276007] [2022-03-18 12:25:42,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882276007] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:25:42,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889651552] [2022-03-18 12:25:42,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 12:25:42,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:25:42,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:25:42,603 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:25:42,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-03-18 12:25:42,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2022-03-18 12:25:42,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:25:42,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 166 conjunts are in the unsatisfiable core [2022-03-18 12:25:42,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:25:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 26325 backedges. 10044 proven. 3321 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2022-03-18 12:25:48,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:25:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 26325 backedges. 10044 proven. 3321 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2022-03-18 12:25:49,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889651552] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:25:49,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:25:49,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [168, 167, 167] total 252 [2022-03-18 12:25:49,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266614841] [2022-03-18 12:25:49,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:25:49,048 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 252 states [2022-03-18 12:25:49,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:25:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2022-03-18 12:25:49,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14034, Invalid=49218, Unknown=0, NotChecked=0, Total=63252 [2022-03-18 12:25:49,052 INFO L87 Difference]: Start difference. First operand 664 states and 665 transitions. Second operand has 252 states, 252 states have (on average 1.6865079365079365) internal successors, (425), 251 states have internal predecessors, (425), 165 states have call successors, (167), 3 states have call predecessors, (167), 1 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2022-03-18 12:25:55,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:25:55,334 INFO L93 Difference]: Finished difference Result 919 states and 1002 transitions. [2022-03-18 12:25:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-03-18 12:25:55,335 INFO L78 Accepts]: Start accepts. Automaton has has 252 states, 252 states have (on average 1.6865079365079365) internal successors, (425), 251 states have internal predecessors, (425), 165 states have call successors, (167), 3 states have call predecessors, (167), 1 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) Word has length 661 [2022-03-18 12:25:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:25:55,336 INFO L225 Difference]: With dead ends: 919 [2022-03-18 12:25:55,336 INFO L226 Difference]: Without dead ends: 665 [2022-03-18 12:25:55,343 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1817 GetRequests, 1401 SyntacticMatches, 1 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48285 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=31632, Invalid=141840, Unknown=0, NotChecked=0, Total=173472 [2022-03-18 12:25:55,343 INFO L912 BasicCegarLoop]: 93 mSDtfsCounter, 21 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5322 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 5662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 5322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:25:55,343 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 185 Invalid, 5662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 5322 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-18 12:25:55,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-03-18 12:25:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2022-03-18 12:25:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 497 states have (on average 1.0040241448692153) internal successors, (499), 498 states have internal predecessors, (499), 84 states have call successors, (84), 84 states have call predecessors, (84), 83 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2022-03-18 12:25:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 666 transitions. [2022-03-18 12:25:55,447 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 666 transitions. Word has length 661 [2022-03-18 12:25:55,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:25:55,447 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 666 transitions. [2022-03-18 12:25:55,448 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 252 states, 252 states have (on average 1.6865079365079365) internal successors, (425), 251 states have internal predecessors, (425), 165 states have call successors, (167), 3 states have call predecessors, (167), 1 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2022-03-18 12:25:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 666 transitions. [2022-03-18 12:25:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2022-03-18 12:25:55,450 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:25:55,450 INFO L500 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:25:55,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2022-03-18 12:25:55,668 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:25:55,669 INFO L403 AbstractCegarLoop]: === Iteration 164 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:25:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:25:55,669 INFO L85 PathProgramCache]: Analyzing trace with hash 9732684, now seen corresponding path program 162 times [2022-03-18 12:25:55,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:25:55,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938817443] [2022-03-18 12:25:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:25:55,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:25:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:25:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:25:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:25:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:25:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:25:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:25:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:25:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:25:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:25:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:25:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:25:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:25:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:25:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:25:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:25:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:25:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:25:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:25:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:25:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:25:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:25:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:25:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:25:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:25:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:25:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:25:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:25:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:25:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:25:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:25:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:25:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:25:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:25:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:25:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:25:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-03-18 12:25:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-18 12:25:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-03-18 12:25:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-18 12:25:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-03-18 12:25:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-18 12:25:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-03-18 12:25:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-18 12:25:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-03-18 12:25:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-18 12:25:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-03-18 12:25:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-18 12:25:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-03-18 12:25:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-18 12:25:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-03-18 12:25:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-18 12:25:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-03-18 12:25:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-18 12:25:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-03-18 12:25:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-18 12:25:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-03-18 12:25:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-18 12:25:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-03-18 12:25:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-18 12:25:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-03-18 12:25:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-03-18 12:25:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-03-18 12:25:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-03-18 12:25:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-03-18 12:25:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-03-18 12:25:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-03-18 12:25:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-03-18 12:25:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2022-03-18 12:25:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-03-18 12:25:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-03-18 12:25:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-03-18 12:25:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-03-18 12:25:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-03-18 12:25:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2022-03-18 12:25:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-03-18 12:25:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2022-03-18 12:25:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-03-18 12:25:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2022-03-18 12:25:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2022-03-18 12:25:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2022-03-18 12:25:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2022-03-18 12:25:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2022-03-18 12:25:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:25:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 26407 backedges. 3483 proven. 9964 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2022-03-18 12:25:57,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:25:57,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938817443] [2022-03-18 12:25:57,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938817443] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:25:57,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65305254] [2022-03-18 12:25:57,257 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-18 12:25:57,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:25:57,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:25:57,258 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:25:57,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-03-18 12:25:57,721 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 82 check-sat command(s) [2022-03-18 12:25:57,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 12:25:57,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 167 conjunts are in the unsatisfiable core [2022-03-18 12:25:57,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:25:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 26407 backedges. 3565 proven. 9882 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2022-03-18 12:25:58,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:25:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 26407 backedges. 3565 proven. 9882 refuted. 0 times theorem prover too weak. 12960 trivial. 0 not checked. [2022-03-18 12:25:58,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65305254] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:25:58,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:25:58,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87, 87] total 91 [2022-03-18 12:25:58,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065361706] [2022-03-18 12:25:58,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:25:58,804 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-03-18 12:25:58,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:25:58,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-03-18 12:25:58,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3585, Invalid=4605, Unknown=0, NotChecked=0, Total=8190 [2022-03-18 12:25:58,805 INFO L87 Difference]: Start difference. First operand 665 states and 666 transitions. Second operand has 91 states, 91 states have (on average 2.868131868131868) internal successors, (261), 88 states have internal predecessors, (261), 83 states have call successors, (86), 4 states have call predecessors, (86), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-03-18 12:26:00,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:26:00,452 INFO L93 Difference]: Finished difference Result 678 states and 680 transitions. [2022-03-18 12:26:00,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-18 12:26:00,453 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.868131868131868) internal successors, (261), 88 states have internal predecessors, (261), 83 states have call successors, (86), 4 states have call predecessors, (86), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 662 [2022-03-18 12:26:00,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:26:00,454 INFO L225 Difference]: With dead ends: 678 [2022-03-18 12:26:00,454 INFO L226 Difference]: Without dead ends: 676 [2022-03-18 12:26:00,457 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 1743 GetRequests, 1565 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5051 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=10747, Invalid=20759, Unknown=0, NotChecked=0, Total=31506 [2022-03-18 12:26:00,458 INFO L912 BasicCegarLoop]: 13 mSDtfsCounter, 206 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 12:26:00,458 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 45 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 12:26:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-03-18 12:26:00,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 672. [2022-03-18 12:26:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 502 states have (on average 1.00398406374502) internal successors, (504), 503 states have internal predecessors, (504), 85 states have call successors, (85), 85 states have call predecessors, (85), 84 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2022-03-18 12:26:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 673 transitions. [2022-03-18 12:26:00,575 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 673 transitions. Word has length 662 [2022-03-18 12:26:00,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:26:00,575 INFO L478 AbstractCegarLoop]: Abstraction has 672 states and 673 transitions. [2022-03-18 12:26:00,576 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.868131868131868) internal successors, (261), 88 states have internal predecessors, (261), 83 states have call successors, (86), 4 states have call predecessors, (86), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-03-18 12:26:00,576 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 673 transitions. [2022-03-18 12:26:00,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2022-03-18 12:26:00,578 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:26:00,578 INFO L500 BasicCegarLoop]: trace histogram [83, 83, 83, 82, 82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:26:00,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Forceful destruction successful, exit code 0 [2022-03-18 12:26:00,797 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:26:00,798 INFO L403 AbstractCegarLoop]: === Iteration 165 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:26:00,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:26:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash -321313626, now seen corresponding path program 163 times [2022-03-18 12:26:00,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:26:00,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422945503] [2022-03-18 12:26:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:26:00,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:26:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:26:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-03-18 12:26:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-03-18 12:26:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-03-18 12:26:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-03-18 12:26:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-03-18 12:26:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-03-18 12:26:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-03-18 12:26:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-03-18 12:26:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-03-18 12:26:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-03-18 12:26:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-03-18 12:26:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-03-18 12:26:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-03-18 12:26:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-03-18 12:26:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-03-18 12:26:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-03-18 12:26:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-03-18 12:26:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-03-18 12:26:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-03-18 12:26:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-03-18 12:26:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-03-18 12:26:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-03-18 12:26:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-03-18 12:26:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-03-18 12:26:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-03-18 12:26:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-03-18 12:26:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-03-18 12:26:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-03-18 12:26:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-03-18 12:26:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-03-18 12:26:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-03-18 12:26:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-03-18 12:26:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-03-18 12:26:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-03-18 12:26:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-03-18 12:26:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-03-18 12:26:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-03-18 12:26:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-03-18 12:26:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-03-18 12:26:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-03-18 12:26:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-03-18 12:26:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-03-18 12:26:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-03-18 12:26:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-03-18 12:26:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-03-18 12:26:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-03-18 12:26:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-03-18 12:26:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-03-18 12:26:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-03-18 12:26:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-03-18 12:26:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-03-18 12:26:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-03-18 12:26:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-03-18 12:26:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-03-18 12:26:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-03-18 12:26:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-03-18 12:26:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-03-18 12:26:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-03-18 12:26:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-03-18 12:26:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-03-18 12:26:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-03-18 12:26:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-03-18 12:26:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-03-18 12:26:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-03-18 12:26:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-03-18 12:26:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-03-18 12:26:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2022-03-18 12:26:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-03-18 12:26:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2022-03-18 12:26:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-03-18 12:26:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2022-03-18 12:26:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-03-18 12:26:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2022-03-18 12:26:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-03-18 12:26:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2022-03-18 12:26:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-03-18 12:26:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2022-03-18 12:26:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2022-03-18 12:26:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2022-03-18 12:26:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2022-03-18 12:26:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2022-03-18 12:26:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2022-03-18 12:26:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 26978 backedges. 10047 proven. 3647 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2022-03-18 12:26:05,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:26:05,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422945503] [2022-03-18 12:26:05,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422945503] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:26:05,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590782380] [2022-03-18 12:26:05,243 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-18 12:26:05,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:26:05,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:26:05,244 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:26:05,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-03-18 12:26:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:26:05,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1614 conjuncts, 168 conjunts are in the unsatisfiable core [2022-03-18 12:26:05,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:26:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 26978 backedges. 10291 proven. 3403 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2022-03-18 12:26:11,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:26:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 26978 backedges. 10291 proven. 3403 refuted. 0 times theorem prover too weak. 13284 trivial. 0 not checked. [2022-03-18 12:26:11,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590782380] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:26:11,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:26:11,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [170, 169, 169] total 255 [2022-03-18 12:26:11,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561005434] [2022-03-18 12:26:11,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:26:11,627 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 255 states [2022-03-18 12:26:11,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:26:11,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 255 interpolants. [2022-03-18 12:26:11,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14371, Invalid=50399, Unknown=0, NotChecked=0, Total=64770 [2022-03-18 12:26:11,632 INFO L87 Difference]: Start difference. First operand 672 states and 673 transitions. Second operand has 255 states, 255 states have (on average 1.6862745098039216) internal successors, (430), 254 states have internal predecessors, (430), 167 states have call successors, (169), 3 states have call predecessors, (169), 1 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166)