/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/down.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 02:26:15,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 02:26:15,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 02:26:15,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 02:26:16,037 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 [2022-01-31 02:26:16,056 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 02:26:16,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 02:26:16,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 02:26:16,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 02:26:16,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 02:26:16,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 02:26:16,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 02:26:16,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 02:26:16,058 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 02:26:16,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 02:26:16,058 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 02:26:16,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 02:26:16,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 02:26:16,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 02:26:16,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 02:26:16,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 02:26:16,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 02:26:16,059 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 02:26:16,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 02:26:16,059 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 02:26:16,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 02:26:16,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 02:26:16,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 02:26:16,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 02:26:16,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 02:26:16,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 02:26:16,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 02:26:16,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 02:26:16,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 02:26:16,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 02:26:16,061 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 02:26:16,061 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 02:26:16,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 02:26:16,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 02:26:16,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 02:26:16,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 02:26:16,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 02:26:16,293 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 02:26:16,294 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 02:26:16,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/down.i [2022-01-31 02:26:16,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e01691eb/3f18bf13465b4c069ed55e9c5c506a8f/FLAG28fc78ad7 [2022-01-31 02:26:16,678 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 02:26:16,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i [2022-01-31 02:26:16,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e01691eb/3f18bf13465b4c069ed55e9c5c506a8f/FLAG28fc78ad7 [2022-01-31 02:26:16,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e01691eb/3f18bf13465b4c069ed55e9c5c506a8f [2022-01-31 02:26:16,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 02:26:16,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 02:26:16,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 02:26:16,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 02:26:16,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 02:26:16,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:26:16" (1/1) ... [2022-01-31 02:26:16,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bed786e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:26:16, skipping insertion in model container [2022-01-31 02:26:16,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:26:16" (1/1) ... [2022-01-31 02:26:16,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 02:26:16,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 02:26:16,848 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/down.i[893,906] [2022-01-31 02:26:16,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 02:26:16,885 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 02:26:16,895 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/down.i[893,906] [2022-01-31 02:26:16,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 02:26:16,907 INFO L208 MainTranslator]: Completed translation [2022-01-31 02:26:16,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:26:16 WrapperNode [2022-01-31 02:26:16,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 02:26:16,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 02:26:16,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 02:26:16,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 02:26:16,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:26:16" (1/1) ... [2022-01-31 02:26:16,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:26:16" (1/1) ... [2022-01-31 02:26:16,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:26:16" (1/1) ... [2022-01-31 02:26:16,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:26:16" (1/1) ... [2022-01-31 02:26:16,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:26:16" (1/1) ... [2022-01-31 02:26:16,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:26:16" (1/1) ... [2022-01-31 02:26:16,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:26:16" (1/1) ... [2022-01-31 02:26:16,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 02:26:16,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 02:26:16,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 02:26:16,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 02:26:16,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:26:16" (1/1) ... [2022-01-31 02:26:16,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 02:26:16,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:16,963 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) [2022-01-31 02:26:16,967 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 [2022-01-31 02:26:16,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 02:26:16,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 02:26:16,999 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 02:26:17,000 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 02:26:17,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 02:26:17,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 02:26:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 02:26:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 02:26:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 02:26:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 02:26:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 02:26:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 02:26:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 02:26:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 02:26:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 02:26:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 02:26:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 02:26:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 02:26:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 02:26:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 02:26:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 02:26:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 02:26:17,054 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 02:26:17,055 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 02:26:17,131 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 02:26:17,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 02:26:17,136 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 02:26:17,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:26:17 BoogieIcfgContainer [2022-01-31 02:26:17,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 02:26:17,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 02:26:17,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 02:26:17,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 02:26:17,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 02:26:16" (1/3) ... [2022-01-31 02:26:17,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d672cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:26:17, skipping insertion in model container [2022-01-31 02:26:17,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:26:16" (2/3) ... [2022-01-31 02:26:17,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d672cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:26:17, skipping insertion in model container [2022-01-31 02:26:17,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:26:17" (3/3) ... [2022-01-31 02:26:17,152 INFO L111 eAbstractionObserver]: Analyzing ICFG down.i [2022-01-31 02:26:17,156 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 02:26:17,156 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 02:26:17,220 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 02:26:17,226 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 02:26:17,227 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 02:26:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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) [2022-01-31 02:26:17,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-31 02:26:17,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:17,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:17,266 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:17,271 INFO L85 PathProgramCache]: Analyzing trace with hash 991123303, now seen corresponding path program 1 times [2022-01-31 02:26:17,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:17,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405900474] [2022-01-31 02:26:17,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:17,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:26:17,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:17,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405900474] [2022-01-31 02:26:17,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405900474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 02:26:17,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 02:26:17,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 02:26:17,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339269920] [2022-01-31 02:26:17,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 02:26:17,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 02:26:17,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:17,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 02:26:17,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 02:26:17,538 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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) [2022-01-31 02:26:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:17,703 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-01-31 02:26:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 02:26:17,705 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 [2022-01-31 02:26:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:17,713 INFO L225 Difference]: With dead ends: 43 [2022-01-31 02:26:17,713 INFO L226 Difference]: Without dead ends: 18 [2022-01-31 02:26:17,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-31 02:26:17,722 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:17,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 39 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-31 02:26:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-01-31 02:26:17,759 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) [2022-01-31 02:26:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-01-31 02:26:17,761 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2022-01-31 02:26:17,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:17,762 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-01-31 02:26:17,762 INFO L471 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) [2022-01-31 02:26:17,762 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-01-31 02:26:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 02:26:17,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:17,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:17,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 02:26:17,765 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:17,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:17,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1458852147, now seen corresponding path program 1 times [2022-01-31 02:26:17,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:17,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893376277] [2022-01-31 02:26:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:17,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:17,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:26:17,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:17,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893376277] [2022-01-31 02:26:17,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893376277] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:17,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431045434] [2022-01-31 02:26:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:17,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:17,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:17,877 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) [2022-01-31 02:26:17,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 02:26:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:17,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 02:26:17,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:26:18,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 02:26:18,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431045434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 02:26:18,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 02:26:18,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2022-01-31 02:26:18,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194287630] [2022-01-31 02:26:18,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 02:26:18,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 02:26:18,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:18,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 02:26:18,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-31 02:26:18,030 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) [2022-01-31 02:26:18,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:18,069 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-01-31 02:26:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 02:26:18,071 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 [2022-01-31 02:26:18,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:18,073 INFO L225 Difference]: With dead ends: 30 [2022-01-31 02:26:18,073 INFO L226 Difference]: Without dead ends: 28 [2022-01-31 02:26:18,076 INFO L932 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 [2022-01-31 02:26:18,077 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:18,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 66 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 02:26:18,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-31 02:26:18,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-01-31 02:26:18,087 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) [2022-01-31 02:26:18,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-01-31 02:26:18,087 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2022-01-31 02:26:18,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:18,088 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-01-31 02:26:18,088 INFO L471 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) [2022-01-31 02:26:18,088 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-01-31 02:26:18,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 02:26:18,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:18,089 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:18,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:18,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:18,290 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:18,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:18,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1637271686, now seen corresponding path program 1 times [2022-01-31 02:26:18,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:18,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662869669] [2022-01-31 02:26:18,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:18,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:18,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-31 02:26:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:26:18,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:18,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662869669] [2022-01-31 02:26:18,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662869669] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:18,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074909174] [2022-01-31 02:26:18,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:18,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:18,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:18,410 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) [2022-01-31 02:26:18,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 02:26:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:18,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 02:26:18,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:26:18,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:26:18,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074909174] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:18,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:18,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 9 [2022-01-31 02:26:18,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064048555] [2022-01-31 02:26:18,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:18,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 02:26:18,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:18,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 02:26:18,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-31 02:26:18,589 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:26:18,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:18,686 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-01-31 02:26:18,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 02:26:18,687 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-01-31 02:26:18,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:18,696 INFO L225 Difference]: With dead ends: 39 [2022-01-31 02:26:18,696 INFO L226 Difference]: Without dead ends: 25 [2022-01-31 02:26:18,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-01-31 02:26:18,698 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:18,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 29 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 02:26:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-31 02:26:18,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-31 02:26:18,704 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) [2022-01-31 02:26:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-01-31 02:26:18,705 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2022-01-31 02:26:18,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:18,705 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-01-31 02:26:18,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 02:26:18,705 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-01-31 02:26:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 02:26:18,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:18,706 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:18,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:18,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 02:26:18,926 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:18,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1400088084, now seen corresponding path program 2 times [2022-01-31 02:26:18,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:18,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369783605] [2022-01-31 02:26:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:18,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:19,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:19,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 02:26:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:26:19,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:19,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369783605] [2022-01-31 02:26:19,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369783605] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:19,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699217811] [2022-01-31 02:26:19,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:26:19,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:19,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:19,041 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) [2022-01-31 02:26:19,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 02:26:19,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:26:19,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:19,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 02:26:19,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:26:19,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 02:26:19,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699217811] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:19,286 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:19,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-01-31 02:26:19,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016486900] [2022-01-31 02:26:19,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:19,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 02:26:19,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:19,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 02:26:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-31 02:26:19,288 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) [2022-01-31 02:26:19,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:19,436 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-01-31 02:26:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 02:26:19,437 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 [2022-01-31 02:26:19,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:19,438 INFO L225 Difference]: With dead ends: 38 [2022-01-31 02:26:19,438 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 02:26:19,438 INFO L932 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 [2022-01-31 02:26:19,439 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:19,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 35 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:19,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 02:26:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-01-31 02:26:19,445 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) [2022-01-31 02:26:19,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-01-31 02:26:19,446 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 22 [2022-01-31 02:26:19,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:19,447 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-01-31 02:26:19,447 INFO L471 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) [2022-01-31 02:26:19,447 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-01-31 02:26:19,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 02:26:19,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:19,448 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:19,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:19,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:19,668 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:19,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:19,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1800678535, now seen corresponding path program 3 times [2022-01-31 02:26:19,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:19,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110419572] [2022-01-31 02:26:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:19,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:19,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 02:26:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:19,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 02:26:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 02:26:19,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:19,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110419572] [2022-01-31 02:26:19,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110419572] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:19,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585886964] [2022-01-31 02:26:19,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:26:19,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:19,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:19,763 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) [2022-01-31 02:26:19,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 02:26:19,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 02:26:19,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:19,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 02:26:19,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 02:26:19,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 02:26:19,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585886964] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:19,955 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:19,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 11 [2022-01-31 02:26:19,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515083708] [2022-01-31 02:26:19,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:19,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 02:26:19,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:19,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 02:26:19,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-31 02:26:19,957 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 02:26:20,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:20,100 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-01-31 02:26:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 02:26:20,101 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2022-01-31 02:26:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:20,102 INFO L225 Difference]: With dead ends: 50 [2022-01-31 02:26:20,102 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 02:26:20,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-01-31 02:26:20,103 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:20,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 50 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:20,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 02:26:20,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-01-31 02:26:20,109 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) [2022-01-31 02:26:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-01-31 02:26:20,110 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2022-01-31 02:26:20,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:20,110 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-01-31 02:26:20,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 02:26:20,110 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-01-31 02:26:20,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 02:26:20,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:20,111 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:20,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:20,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:20,328 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:20,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:20,328 INFO L85 PathProgramCache]: Analyzing trace with hash -949159955, now seen corresponding path program 4 times [2022-01-31 02:26:20,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:20,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527838230] [2022-01-31 02:26:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:20,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:20,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:20,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 02:26:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:20,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 02:26:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 02:26:20,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:20,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527838230] [2022-01-31 02:26:20,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527838230] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:20,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25900694] [2022-01-31 02:26:20,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:26:20,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:20,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:20,441 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) [2022-01-31 02:26:20,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 02:26:20,474 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:26:20,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:20,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-31 02:26:20,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 02:26:20,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 02:26:20,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25900694] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:20,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:20,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-01-31 02:26:20,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940337453] [2022-01-31 02:26:20,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:20,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 02:26:20,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:20,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 02:26:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-01-31 02:26:20,620 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) [2022-01-31 02:26:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:20,779 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2022-01-31 02:26:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 02:26:20,783 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 [2022-01-31 02:26:20,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:20,789 INFO L225 Difference]: With dead ends: 46 [2022-01-31 02:26:20,793 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 02:26:20,793 INFO L932 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 [2022-01-31 02:26:20,794 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:20,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 40 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:20,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 02:26:20,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-01-31 02:26:20,799 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) [2022-01-31 02:26:20,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-01-31 02:26:20,800 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 30 [2022-01-31 02:26:20,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:20,800 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-01-31 02:26:20,801 INFO L471 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) [2022-01-31 02:26:20,801 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-01-31 02:26:20,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 02:26:20,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:20,802 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:20,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:21,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:21,028 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:21,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1241056410, now seen corresponding path program 5 times [2022-01-31 02:26:21,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:21,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234459480] [2022-01-31 02:26:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:21,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:21,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:21,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 02:26:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:21,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 02:26:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:21,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 02:26:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 02:26:21,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:21,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234459480] [2022-01-31 02:26:21,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234459480] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:21,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036871643] [2022-01-31 02:26:21,133 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:26:21,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:21,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:21,134 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) [2022-01-31 02:26:21,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 02:26:21,182 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-31 02:26:21,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:21,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 02:26:21,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 02:26:21,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 02:26:21,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036871643] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:21,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:21,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 13 [2022-01-31 02:26:21,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406671570] [2022-01-31 02:26:21,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:21,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 02:26:21,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:21,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 02:26:21,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-01-31 02:26:21,350 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 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) [2022-01-31 02:26:21,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:21,518 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-01-31 02:26:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 02:26:21,518 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 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 37 [2022-01-31 02:26:21,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:21,519 INFO L225 Difference]: With dead ends: 61 [2022-01-31 02:26:21,519 INFO L226 Difference]: Without dead ends: 41 [2022-01-31 02:26:21,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-01-31 02:26:21,520 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:21,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 51 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:21,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-01-31 02:26:21,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-01-31 02:26:21,527 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) [2022-01-31 02:26:21,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-01-31 02:26:21,527 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 37 [2022-01-31 02:26:21,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:21,528 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-01-31 02:26:21,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 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) [2022-01-31 02:26:21,528 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-01-31 02:26:21,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 02:26:21,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:21,529 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:21,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:21,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:21,748 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:21,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:21,748 INFO L85 PathProgramCache]: Analyzing trace with hash -781647668, now seen corresponding path program 6 times [2022-01-31 02:26:21,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:21,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063429111] [2022-01-31 02:26:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:21,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:21,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:21,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 02:26:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:21,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 02:26:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:21,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 02:26:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 02:26:21,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:21,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063429111] [2022-01-31 02:26:21,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063429111] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:21,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108391721] [2022-01-31 02:26:21,830 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:26:21,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:21,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:21,832 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) [2022-01-31 02:26:21,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 02:26:21,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-31 02:26:21,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:21,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-31 02:26:21,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 02:26:21,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 02:26:22,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108391721] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:22,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:22,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2022-01-31 02:26:22,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428773098] [2022-01-31 02:26:22,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:22,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 02:26:22,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:22,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 02:26:22,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-31 02:26:22,037 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) [2022-01-31 02:26:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:22,193 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2022-01-31 02:26:22,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 02:26:22,194 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 [2022-01-31 02:26:22,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:22,194 INFO L225 Difference]: With dead ends: 54 [2022-01-31 02:26:22,194 INFO L226 Difference]: Without dead ends: 52 [2022-01-31 02:26:22,200 INFO L932 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 [2022-01-31 02:26:22,201 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:22,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 45 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-01-31 02:26:22,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2022-01-31 02:26:22,216 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) [2022-01-31 02:26:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2022-01-31 02:26:22,217 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 38 [2022-01-31 02:26:22,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:22,217 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2022-01-31 02:26:22,217 INFO L471 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) [2022-01-31 02:26:22,217 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2022-01-31 02:26:22,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-31 02:26:22,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:22,218 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:22,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:22,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:22,436 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:22,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1058539943, now seen corresponding path program 7 times [2022-01-31 02:26:22,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:22,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220989271] [2022-01-31 02:26:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:22,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:22,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:22,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-01-31 02:26:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:22,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 02:26:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:22,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 02:26:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:22,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 02:26:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 02:26:22,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:22,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220989271] [2022-01-31 02:26:22,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220989271] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:22,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656586887] [2022-01-31 02:26:22,576 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:26:22,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:22,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:22,577 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) [2022-01-31 02:26:22,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 02:26:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:22,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-31 02:26:22,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 02:26:22,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 02:26:22,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656586887] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:22,791 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:22,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 15 [2022-01-31 02:26:22,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339261302] [2022-01-31 02:26:22,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:22,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 02:26:22,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:22,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 02:26:22,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-01-31 02:26:22,795 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 02:26:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:22,996 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2022-01-31 02:26:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 02:26:22,996 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 45 [2022-01-31 02:26:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:22,998 INFO L225 Difference]: With dead ends: 72 [2022-01-31 02:26:22,998 INFO L226 Difference]: Without dead ends: 49 [2022-01-31 02:26:22,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2022-01-31 02:26:23,001 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:23,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 47 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:23,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-31 02:26:23,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-01-31 02:26:23,011 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) [2022-01-31 02:26:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-01-31 02:26:23,012 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 45 [2022-01-31 02:26:23,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:23,013 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-01-31 02:26:23,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 02:26:23,013 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-01-31 02:26:23,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-31 02:26:23,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:23,017 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:23,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:23,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-31 02:26:23,218 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:23,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:23,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1105807629, now seen corresponding path program 8 times [2022-01-31 02:26:23,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:23,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813345046] [2022-01-31 02:26:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:23,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:23,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:23,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 02:26:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:23,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 02:26:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:23,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 02:26:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:23,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 02:26:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 02:26:23,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:23,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813345046] [2022-01-31 02:26:23,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813345046] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:23,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577218959] [2022-01-31 02:26:23,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:26:23,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:23,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:23,316 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) [2022-01-31 02:26:23,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-31 02:26:23,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:26:23,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:23,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-31 02:26:23,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 02:26:23,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:23,577 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-31 02:26:23,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577218959] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:23,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:23,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2022-01-31 02:26:23,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496073668] [2022-01-31 02:26:23,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:23,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 02:26:23,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:23,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 02:26:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-31 02:26:23,579 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) [2022-01-31 02:26:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:23,735 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2022-01-31 02:26:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 02:26:23,736 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 [2022-01-31 02:26:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:23,736 INFO L225 Difference]: With dead ends: 62 [2022-01-31 02:26:23,737 INFO L226 Difference]: Without dead ends: 60 [2022-01-31 02:26:23,737 INFO L932 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 [2022-01-31 02:26:23,738 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:23,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 45 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:23,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-31 02:26:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2022-01-31 02:26:23,744 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) [2022-01-31 02:26:23,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-01-31 02:26:23,744 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 46 [2022-01-31 02:26:23,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:23,745 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-01-31 02:26:23,745 INFO L471 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) [2022-01-31 02:26:23,745 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-01-31 02:26:23,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-31 02:26:23,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:23,746 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:23,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:23,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-31 02:26:23,969 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:23,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:23,970 INFO L85 PathProgramCache]: Analyzing trace with hash -211605946, now seen corresponding path program 9 times [2022-01-31 02:26:23,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:23,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82190831] [2022-01-31 02:26:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:23,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-31 02:26:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 02:26:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 02:26:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 02:26:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 02:26:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 02:26:24,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:24,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82190831] [2022-01-31 02:26:24,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82190831] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:24,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606210430] [2022-01-31 02:26:24,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:26:24,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:24,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:24,107 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) [2022-01-31 02:26:24,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-31 02:26:24,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-31 02:26:24,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:24,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 02:26:24,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 02:26:24,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 02:26:24,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606210430] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:24,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:24,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 17 [2022-01-31 02:26:24,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052025073] [2022-01-31 02:26:24,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:24,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 02:26:24,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 02:26:24,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-01-31 02:26:24,378 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 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) [2022-01-31 02:26:24,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:24,622 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2022-01-31 02:26:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 02:26:24,622 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 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 53 [2022-01-31 02:26:24,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:24,623 INFO L225 Difference]: With dead ends: 83 [2022-01-31 02:26:24,623 INFO L226 Difference]: Without dead ends: 57 [2022-01-31 02:26:24,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2022-01-31 02:26:24,625 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:24,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 53 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:24,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-31 02:26:24,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-01-31 02:26:24,641 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) [2022-01-31 02:26:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-01-31 02:26:24,641 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 53 [2022-01-31 02:26:24,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:24,642 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-01-31 02:26:24,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 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) [2022-01-31 02:26:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-01-31 02:26:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-31 02:26:24,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:24,643 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:24,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:24,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-31 02:26:24,866 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:24,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:24,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2143920044, now seen corresponding path program 10 times [2022-01-31 02:26:24,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:24,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613306387] [2022-01-31 02:26:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:24,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 02:26:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 02:26:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 02:26:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 02:26:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 02:26:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 02:26:24,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:24,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613306387] [2022-01-31 02:26:24,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613306387] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:24,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456357910] [2022-01-31 02:26:24,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:26:24,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:24,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:24,982 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) [2022-01-31 02:26:24,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-31 02:26:25,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:26:25,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:25,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-31 02:26:25,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 02:26:25,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-31 02:26:25,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456357910] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:25,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:25,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 15 [2022-01-31 02:26:25,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812735804] [2022-01-31 02:26:25,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:25,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 02:26:25,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 02:26:25,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-01-31 02:26:25,242 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) [2022-01-31 02:26:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:25,440 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2022-01-31 02:26:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 02:26:25,440 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 [2022-01-31 02:26:25,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:25,441 INFO L225 Difference]: With dead ends: 70 [2022-01-31 02:26:25,441 INFO L226 Difference]: Without dead ends: 68 [2022-01-31 02:26:25,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2022-01-31 02:26:25,442 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:25,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 45 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-31 02:26:25,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2022-01-31 02:26:25,448 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) [2022-01-31 02:26:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2022-01-31 02:26:25,449 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 54 [2022-01-31 02:26:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:25,449 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2022-01-31 02:26:25,449 INFO L471 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) [2022-01-31 02:26:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2022-01-31 02:26:25,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-31 02:26:25,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:25,450 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:25,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:25,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-31 02:26:25,675 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:25,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2089750841, now seen corresponding path program 11 times [2022-01-31 02:26:25,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:25,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209081719] [2022-01-31 02:26:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:25,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:25,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-31 02:26:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:25,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 02:26:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:25,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 02:26:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:25,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 02:26:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:25,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 02:26:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:25,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 02:26:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 02:26:25,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:25,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209081719] [2022-01-31 02:26:25,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209081719] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:25,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158541539] [2022-01-31 02:26:25,842 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:26:25,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:25,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:25,844 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) [2022-01-31 02:26:25,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-31 02:26:25,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-31 02:26:25,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:25,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-31 02:26:25,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 02:26:26,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 02:26:26,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158541539] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:26,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:26,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 19 [2022-01-31 02:26:26,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142154700] [2022-01-31 02:26:26,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:26,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 02:26:26,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:26,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 02:26:26,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-01-31 02:26:26,144 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 02:26:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:26,393 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2022-01-31 02:26:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 02:26:26,393 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 61 [2022-01-31 02:26:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:26,394 INFO L225 Difference]: With dead ends: 94 [2022-01-31 02:26:26,394 INFO L226 Difference]: Without dead ends: 65 [2022-01-31 02:26:26,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=259, Invalid=863, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 02:26:26,395 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:26,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 34 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:26,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-01-31 02:26:26,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-01-31 02:26:26,401 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) [2022-01-31 02:26:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2022-01-31 02:26:26,402 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 61 [2022-01-31 02:26:26,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:26,402 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2022-01-31 02:26:26,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-31 02:26:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2022-01-31 02:26:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-31 02:26:26,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:26,403 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:26,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:26,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-31 02:26:26,630 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:26,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:26,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1248681427, now seen corresponding path program 12 times [2022-01-31 02:26:26,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:26,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408063248] [2022-01-31 02:26:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:26,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:26,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 02:26:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:26,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 02:26:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:26,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 02:26:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 02:26:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 02:26:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:26,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 02:26:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 02:26:26,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:26,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408063248] [2022-01-31 02:26:26,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408063248] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:26,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519182707] [2022-01-31 02:26:26,732 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:26:26,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:26,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:26,734 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) [2022-01-31 02:26:26,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-31 02:26:26,796 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-31 02:26:26,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:26,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-31 02:26:26,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 02:26:26,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 02:26:27,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519182707] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:27,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:27,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 16 [2022-01-31 02:26:27,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842305931] [2022-01-31 02:26:27,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:27,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 02:26:27,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:27,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 02:26:27,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-01-31 02:26:27,035 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) [2022-01-31 02:26:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:27,244 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2022-01-31 02:26:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 02:26:27,244 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 [2022-01-31 02:26:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:27,245 INFO L225 Difference]: With dead ends: 78 [2022-01-31 02:26:27,245 INFO L226 Difference]: Without dead ends: 76 [2022-01-31 02:26:27,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2022-01-31 02:26:27,246 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:27,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 55 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:27,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-31 02:26:27,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2022-01-31 02:26:27,251 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) [2022-01-31 02:26:27,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2022-01-31 02:26:27,257 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 62 [2022-01-31 02:26:27,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:27,258 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2022-01-31 02:26:27,258 INFO L471 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) [2022-01-31 02:26:27,258 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2022-01-31 02:26:27,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 02:26:27,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:27,259 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:27,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:27,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-31 02:26:27,475 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:27,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:27,476 INFO L85 PathProgramCache]: Analyzing trace with hash 72960294, now seen corresponding path program 13 times [2022-01-31 02:26:27,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:27,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980638253] [2022-01-31 02:26:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:27,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:27,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:27,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-31 02:26:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:27,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 02:26:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 02:26:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 02:26:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 02:26:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 02:26:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:26:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 02:26:27,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:27,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980638253] [2022-01-31 02:26:27,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980638253] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:27,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284736864] [2022-01-31 02:26:27,655 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:26:27,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:27,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:27,657 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) [2022-01-31 02:26:27,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-31 02:26:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:27,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-31 02:26:27,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 02:26:27,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 02:26:27,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284736864] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:27,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:27,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 21 [2022-01-31 02:26:27,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910579639] [2022-01-31 02:26:27,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:27,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 02:26:27,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:27,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 02:26:27,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-01-31 02:26:27,929 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 20 states have internal predecessors, (36), 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) [2022-01-31 02:26:28,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:28,202 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2022-01-31 02:26:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 02:26:28,203 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 20 states have internal predecessors, (36), 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 69 [2022-01-31 02:26:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:28,204 INFO L225 Difference]: With dead ends: 105 [2022-01-31 02:26:28,204 INFO L226 Difference]: Without dead ends: 73 [2022-01-31 02:26:28,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=1088, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 02:26:28,205 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:28,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 50 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-31 02:26:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-01-31 02:26:28,212 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) [2022-01-31 02:26:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-01-31 02:26:28,212 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 69 [2022-01-31 02:26:28,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:28,212 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-01-31 02:26:28,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 20 states have internal predecessors, (36), 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) [2022-01-31 02:26:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-01-31 02:26:28,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 02:26:28,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:28,213 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:28,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:28,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:28,436 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:28,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:28,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1918645900, now seen corresponding path program 14 times [2022-01-31 02:26:28,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:28,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709208847] [2022-01-31 02:26:28,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:28,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:28,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 02:26:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 02:26:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 02:26:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 02:26:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:28,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 02:26:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:28,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 02:26:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:26:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 02:26:28,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:28,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709208847] [2022-01-31 02:26:28,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709208847] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:28,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595841470] [2022-01-31 02:26:28,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:26:28,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:28,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:28,552 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) [2022-01-31 02:26:28,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-31 02:26:28,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:26:28,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:28,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-31 02:26:28,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 02:26:28,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-31 02:26:28,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595841470] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:28,851 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:28,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 17 [2022-01-31 02:26:28,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247866508] [2022-01-31 02:26:28,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:28,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-31 02:26:28,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:28,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-31 02:26:28,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-01-31 02:26:28,852 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) [2022-01-31 02:26:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:29,070 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2022-01-31 02:26:29,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 02:26:29,071 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 [2022-01-31 02:26:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:29,072 INFO L225 Difference]: With dead ends: 86 [2022-01-31 02:26:29,072 INFO L226 Difference]: Without dead ends: 84 [2022-01-31 02:26:29,072 INFO L932 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 [2022-01-31 02:26:29,073 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:29,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 50 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:29,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-31 02:26:29,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2022-01-31 02:26:29,083 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) [2022-01-31 02:26:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2022-01-31 02:26:29,083 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 70 [2022-01-31 02:26:29,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:29,084 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2022-01-31 02:26:29,085 INFO L471 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) [2022-01-31 02:26:29,085 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2022-01-31 02:26:29,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-31 02:26:29,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:29,086 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:29,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:29,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-31 02:26:29,299 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:29,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:29,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1108288537, now seen corresponding path program 15 times [2022-01-31 02:26:29,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:29,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151527325] [2022-01-31 02:26:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:29,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:29,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 02:26:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:29,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 02:26:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:29,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 02:26:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 02:26:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:29,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 02:26:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:29,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 02:26:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:26:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:29,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:26:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 02:26:29,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:29,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151527325] [2022-01-31 02:26:29,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151527325] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:29,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056752017] [2022-01-31 02:26:29,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:26:29,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:29,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:29,504 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) [2022-01-31 02:26:29,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-31 02:26:29,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-01-31 02:26:29,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:29,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-31 02:26:29,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 02:26:29,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 02:26:29,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056752017] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:29,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:29,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 23 [2022-01-31 02:26:29,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067378221] [2022-01-31 02:26:29,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:29,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 02:26:29,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:29,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 02:26:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2022-01-31 02:26:29,807 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 22 states have internal predecessors, (39), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 02:26:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:30,116 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2022-01-31 02:26:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 02:26:30,116 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 22 states have internal predecessors, (39), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2022-01-31 02:26:30,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:30,117 INFO L225 Difference]: With dead ends: 116 [2022-01-31 02:26:30,117 INFO L226 Difference]: Without dead ends: 81 [2022-01-31 02:26:30,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 02:26:30,118 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:30,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 46 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-01-31 02:26:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-01-31 02:26:30,124 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) [2022-01-31 02:26:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-01-31 02:26:30,125 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 77 [2022-01-31 02:26:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:30,125 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-01-31 02:26:30,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 22 states have internal predecessors, (39), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 02:26:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-01-31 02:26:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 02:26:30,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:30,126 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:30,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:30,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-31 02:26:30,331 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:30,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2012939085, now seen corresponding path program 16 times [2022-01-31 02:26:30,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:30,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407096140] [2022-01-31 02:26:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:30,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:30,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 02:26:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:30,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 02:26:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:30,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 02:26:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 02:26:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:30,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 02:26:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:30,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 02:26:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:26:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:26:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 02:26:30,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:30,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407096140] [2022-01-31 02:26:30,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407096140] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:30,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180321773] [2022-01-31 02:26:30,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:26:30,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:30,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:30,486 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) [2022-01-31 02:26:30,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-31 02:26:30,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:26:30,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:30,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-31 02:26:30,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 02:26:30,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-01-31 02:26:30,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180321773] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:30,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:30,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 18 [2022-01-31 02:26:30,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620510410] [2022-01-31 02:26:30,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:30,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 02:26:30,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:30,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 02:26:30,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-01-31 02:26:30,877 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) [2022-01-31 02:26:31,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:31,104 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2022-01-31 02:26:31,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 02:26:31,105 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 [2022-01-31 02:26:31,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:31,106 INFO L225 Difference]: With dead ends: 94 [2022-01-31 02:26:31,106 INFO L226 Difference]: Without dead ends: 92 [2022-01-31 02:26:31,106 INFO L932 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 [2022-01-31 02:26:31,107 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 49 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:31,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 40 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-31 02:26:31,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2022-01-31 02:26:31,112 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) [2022-01-31 02:26:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2022-01-31 02:26:31,113 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 78 [2022-01-31 02:26:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:31,113 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2022-01-31 02:26:31,113 INFO L471 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) [2022-01-31 02:26:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2022-01-31 02:26:31,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-31 02:26:31,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:31,114 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:31,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:31,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-31 02:26:31,314 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:31,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1961401338, now seen corresponding path program 17 times [2022-01-31 02:26:31,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:31,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453103957] [2022-01-31 02:26:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:31,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:31,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-31 02:26:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:31,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 02:26:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 02:26:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:31,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 02:26:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 02:26:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:31,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 02:26:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:26:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:31,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:26:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:31,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:26:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-01-31 02:26:31,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:31,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453103957] [2022-01-31 02:26:31,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453103957] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:31,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873002907] [2022-01-31 02:26:31,543 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:26:31,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:31,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:31,545 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) [2022-01-31 02:26:31,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-31 02:26:31,598 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-01-31 02:26:31,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:31,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-31 02:26:31,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-01-31 02:26:31,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-01-31 02:26:31,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873002907] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:31,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:31,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 25 [2022-01-31 02:26:31,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063512000] [2022-01-31 02:26:31,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:31,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 02:26:31,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 02:26:31,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2022-01-31 02:26:31,868 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 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) [2022-01-31 02:26:32,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:32,263 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2022-01-31 02:26:32,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 02:26:32,263 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 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 85 [2022-01-31 02:26:32,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:32,264 INFO L225 Difference]: With dead ends: 127 [2022-01-31 02:26:32,264 INFO L226 Difference]: Without dead ends: 89 [2022-01-31 02:26:32,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=454, Invalid=1616, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 02:26:32,266 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:32,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 57 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:32,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-31 02:26:32,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-01-31 02:26:32,272 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) [2022-01-31 02:26:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2022-01-31 02:26:32,273 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 85 [2022-01-31 02:26:32,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:32,273 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2022-01-31 02:26:32,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 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) [2022-01-31 02:26:32,273 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2022-01-31 02:26:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-31 02:26:32,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:32,274 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:32,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:32,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:32,491 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:32,492 INFO L85 PathProgramCache]: Analyzing trace with hash 458147180, now seen corresponding path program 18 times [2022-01-31 02:26:32,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:32,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538717329] [2022-01-31 02:26:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:32,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 02:26:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:32,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 02:26:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 02:26:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:32,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 02:26:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 02:26:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 02:26:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:32,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:26:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:32,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:26:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:26:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:32,661 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-01-31 02:26:32,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:32,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538717329] [2022-01-31 02:26:32,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538717329] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:32,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232643795] [2022-01-31 02:26:32,661 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:26:32,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:32,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:32,663 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) [2022-01-31 02:26:32,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-31 02:26:32,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-01-31 02:26:32,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:32,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-31 02:26:32,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-01-31 02:26:32,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-01-31 02:26:33,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232643795] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:33,028 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:33,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 19 [2022-01-31 02:26:33,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741654734] [2022-01-31 02:26:33,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:33,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-31 02:26:33,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-31 02:26:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-01-31 02:26:33,029 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) [2022-01-31 02:26:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:33,279 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2022-01-31 02:26:33,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 02:26:33,279 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 [2022-01-31 02:26:33,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:33,280 INFO L225 Difference]: With dead ends: 102 [2022-01-31 02:26:33,280 INFO L226 Difference]: Without dead ends: 100 [2022-01-31 02:26:33,281 INFO L932 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 [2022-01-31 02:26:33,281 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:33,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 50 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 02:26:33,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-31 02:26:33,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2022-01-31 02:26:33,288 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) [2022-01-31 02:26:33,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-01-31 02:26:33,288 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 86 [2022-01-31 02:26:33,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:33,289 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-01-31 02:26:33,289 INFO L471 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) [2022-01-31 02:26:33,289 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-01-31 02:26:33,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-31 02:26:33,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:33,290 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:33,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:33,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:33,490 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:33,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:33,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1286197511, now seen corresponding path program 19 times [2022-01-31 02:26:33,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:33,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664439274] [2022-01-31 02:26:33,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:33,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-31 02:26:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 02:26:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 02:26:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 02:26:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 02:26:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 02:26:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:26:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:26:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:26:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:26:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,707 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-01-31 02:26:33,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:33,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664439274] [2022-01-31 02:26:33,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664439274] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:33,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342744230] [2022-01-31 02:26:33,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:26:33,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:33,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:33,712 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) [2022-01-31 02:26:33,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-31 02:26:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:33,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-31 02:26:33,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-01-31 02:26:33,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-01-31 02:26:34,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342744230] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:34,056 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:34,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 27 [2022-01-31 02:26:34,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296951941] [2022-01-31 02:26:34,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:34,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 02:26:34,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:34,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 02:26:34,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2022-01-31 02:26:34,058 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 02:26:34,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:34,484 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2022-01-31 02:26:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 02:26:34,485 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 93 [2022-01-31 02:26:34,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:34,486 INFO L225 Difference]: With dead ends: 138 [2022-01-31 02:26:34,486 INFO L226 Difference]: Without dead ends: 97 [2022-01-31 02:26:34,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=531, Invalid=1919, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 02:26:34,487 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:34,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 53 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:34,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-31 02:26:34,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-01-31 02:26:34,494 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) [2022-01-31 02:26:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2022-01-31 02:26:34,495 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 93 [2022-01-31 02:26:34,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:34,495 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2022-01-31 02:26:34,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-31 02:26:34,495 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2022-01-31 02:26:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-31 02:26:34,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:34,496 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:34,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:34,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-01-31 02:26:34,714 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:34,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:34,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1221301139, now seen corresponding path program 20 times [2022-01-31 02:26:34,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:34,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214737372] [2022-01-31 02:26:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:34,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:34,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 02:26:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:34,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 02:26:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:34,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 02:26:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:34,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 02:26:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:34,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 02:26:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 02:26:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:34,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:26:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:26:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:26:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:26:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-01-31 02:26:34,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:34,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214737372] [2022-01-31 02:26:34,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214737372] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:34,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736945272] [2022-01-31 02:26:34,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:26:34,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:34,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:34,889 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) [2022-01-31 02:26:34,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-31 02:26:34,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:26:34,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:34,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-31 02:26:34,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-01-31 02:26:35,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-01-31 02:26:35,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736945272] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:35,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:35,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 20 [2022-01-31 02:26:35,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305521688] [2022-01-31 02:26:35,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:35,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-31 02:26:35,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:35,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-31 02:26:35,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-01-31 02:26:35,332 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) [2022-01-31 02:26:35,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:35,628 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2022-01-31 02:26:35,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-31 02:26:35,629 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 [2022-01-31 02:26:35,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:35,630 INFO L225 Difference]: With dead ends: 110 [2022-01-31 02:26:35,630 INFO L226 Difference]: Without dead ends: 108 [2022-01-31 02:26:35,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 216 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=310, Invalid=950, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 02:26:35,631 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 56 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:35,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 50 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-31 02:26:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2022-01-31 02:26:35,638 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) [2022-01-31 02:26:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2022-01-31 02:26:35,640 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 94 [2022-01-31 02:26:35,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:35,641 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2022-01-31 02:26:35,641 INFO L471 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) [2022-01-31 02:26:35,641 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2022-01-31 02:26:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-31 02:26:35,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:35,642 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:35,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:35,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-31 02:26:35,855 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:35,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1052018970, now seen corresponding path program 21 times [2022-01-31 02:26:35,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:35,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098507496] [2022-01-31 02:26:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:35,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 02:26:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 02:26:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 02:26:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 02:26:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 02:26:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 02:26:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:26:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:26:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:26:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:26:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:26:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:36,143 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-01-31 02:26:36,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:36,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098507496] [2022-01-31 02:26:36,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098507496] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:36,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554331804] [2022-01-31 02:26:36,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:26:36,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:36,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:36,148 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) [2022-01-31 02:26:36,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-31 02:26:36,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-01-31 02:26:36,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:36,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-31 02:26:36,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-01-31 02:26:36,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-01-31 02:26:36,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554331804] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:36,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:36,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 29 [2022-01-31 02:26:36,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089096529] [2022-01-31 02:26:36,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:36,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 02:26:36,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:36,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 02:26:36,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-01-31 02:26:36,579 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 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) [2022-01-31 02:26:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:37,026 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2022-01-31 02:26:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 02:26:37,026 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 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 101 [2022-01-31 02:26:37,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:37,027 INFO L225 Difference]: With dead ends: 149 [2022-01-31 02:26:37,027 INFO L226 Difference]: Without dead ends: 105 [2022-01-31 02:26:37,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=614, Invalid=2248, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 02:26:37,029 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:37,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 59 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:37,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-01-31 02:26:37,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-01-31 02:26:37,038 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) [2022-01-31 02:26:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-01-31 02:26:37,039 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 101 [2022-01-31 02:26:37,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:37,039 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-01-31 02:26:37,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 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) [2022-01-31 02:26:37,043 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-01-31 02:26:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-31 02:26:37,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:37,044 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:37,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:37,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:37,267 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2075177908, now seen corresponding path program 22 times [2022-01-31 02:26:37,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:37,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036561378] [2022-01-31 02:26:37,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:37,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 02:26:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 02:26:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 02:26:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 02:26:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 02:26:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 02:26:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:26:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:26:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:26:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:26:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:26:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-01-31 02:26:37,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:37,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036561378] [2022-01-31 02:26:37,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036561378] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:37,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191945610] [2022-01-31 02:26:37,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:26:37,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:37,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:37,464 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) [2022-01-31 02:26:37,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-31 02:26:37,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:26:37,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:37,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-31 02:26:37,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-01-31 02:26:37,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-01-31 02:26:37,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191945610] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:37,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:37,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 21 [2022-01-31 02:26:37,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288968456] [2022-01-31 02:26:37,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:37,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-31 02:26:37,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:37,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-31 02:26:37,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-01-31 02:26:37,896 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) [2022-01-31 02:26:38,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:38,174 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2022-01-31 02:26:38,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-31 02:26:38,175 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 [2022-01-31 02:26:38,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:38,176 INFO L225 Difference]: With dead ends: 118 [2022-01-31 02:26:38,176 INFO L226 Difference]: Without dead ends: 116 [2022-01-31 02:26:38,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 02:26:38,177 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 60 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:38,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 50 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-31 02:26:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2022-01-31 02:26:38,185 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) [2022-01-31 02:26:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2022-01-31 02:26:38,185 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 102 [2022-01-31 02:26:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:38,186 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2022-01-31 02:26:38,186 INFO L471 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) [2022-01-31 02:26:38,186 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2022-01-31 02:26:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-31 02:26:38,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:38,187 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:38,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-01-31 02:26:38,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:38,410 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:38,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2043818457, now seen corresponding path program 23 times [2022-01-31 02:26:38,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:38,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978711032] [2022-01-31 02:26:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:38,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 02:26:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 02:26:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 02:26:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 02:26:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 02:26:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 02:26:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:26:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:26:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:26:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:26:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:26:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:26:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-01-31 02:26:38,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:38,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978711032] [2022-01-31 02:26:38,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978711032] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:38,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229111087] [2022-01-31 02:26:38,702 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:26:38,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:38,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:38,704 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) [2022-01-31 02:26:38,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-31 02:26:38,773 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-01-31 02:26:38,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:38,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-31 02:26:38,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-01-31 02:26:38,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-01-31 02:26:39,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229111087] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:39,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:39,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 31 [2022-01-31 02:26:39,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833749248] [2022-01-31 02:26:39,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:39,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 02:26:39,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:39,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 02:26:39,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2022-01-31 02:26:39,123 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 30 states have internal predecessors, (51), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 02:26:39,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:39,663 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2022-01-31 02:26:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 02:26:39,664 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 30 states have internal predecessors, (51), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 109 [2022-01-31 02:26:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:39,665 INFO L225 Difference]: With dead ends: 160 [2022-01-31 02:26:39,665 INFO L226 Difference]: Without dead ends: 113 [2022-01-31 02:26:39,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=703, Invalid=2603, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 02:26:39,666 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:39,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 90 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-01-31 02:26:39,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-01-31 02:26:39,675 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) [2022-01-31 02:26:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2022-01-31 02:26:39,675 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 109 [2022-01-31 02:26:39,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:39,675 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2022-01-31 02:26:39,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 30 states have internal predecessors, (51), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-01-31 02:26:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2022-01-31 02:26:39,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-31 02:26:39,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:39,677 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:39,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-01-31 02:26:39,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-31 02:26:39,883 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:39,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:39,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1714365043, now seen corresponding path program 24 times [2022-01-31 02:26:39,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:39,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651172863] [2022-01-31 02:26:39,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:39,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 02:26:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 02:26:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 02:26:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 02:26:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 02:26:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 02:26:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:26:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:26:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:26:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:26:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:26:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:26:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:40,071 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-01-31 02:26:40,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:40,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651172863] [2022-01-31 02:26:40,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651172863] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:40,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472396261] [2022-01-31 02:26:40,071 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:26:40,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:40,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:40,076 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) [2022-01-31 02:26:40,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-31 02:26:40,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-01-31 02:26:40,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:40,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-31 02:26:40,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-01-31 02:26:40,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-01-31 02:26:40,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472396261] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:40,568 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:40,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 22 [2022-01-31 02:26:40,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565947695] [2022-01-31 02:26:40,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:40,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-31 02:26:40,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:40,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-31 02:26:40,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2022-01-31 02:26:40,570 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) [2022-01-31 02:26:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:40,869 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2022-01-31 02:26:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-31 02:26:40,869 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 [2022-01-31 02:26:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:40,870 INFO L225 Difference]: With dead ends: 126 [2022-01-31 02:26:40,870 INFO L226 Difference]: Without dead ends: 124 [2022-01-31 02:26:40,870 INFO L932 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 [2022-01-31 02:26:40,870 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 52 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:40,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 50 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:40,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-01-31 02:26:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2022-01-31 02:26:40,879 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) [2022-01-31 02:26:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2022-01-31 02:26:40,879 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 110 [2022-01-31 02:26:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:40,880 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2022-01-31 02:26:40,880 INFO L471 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) [2022-01-31 02:26:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2022-01-31 02:26:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-31 02:26:40,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:40,881 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:40,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-01-31 02:26:41,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-31 02:26:41,087 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:41,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1478721990, now seen corresponding path program 25 times [2022-01-31 02:26:41,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:41,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218395889] [2022-01-31 02:26:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:41,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 02:26:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 02:26:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 02:26:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 02:26:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 02:26:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 02:26:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:26:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:26:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:26:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:26:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:26:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:26:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:26:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-01-31 02:26:41,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:41,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218395889] [2022-01-31 02:26:41,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218395889] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:41,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057391833] [2022-01-31 02:26:41,429 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:26:41,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:41,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:41,432 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) [2022-01-31 02:26:41,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-31 02:26:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:41,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-31 02:26:41,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-01-31 02:26:41,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:41,921 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-01-31 02:26:41,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057391833] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:41,921 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:41,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 33 [2022-01-31 02:26:41,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694789853] [2022-01-31 02:26:41,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:41,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 02:26:41,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:41,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 02:26:41,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 02:26:41,923 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 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) [2022-01-31 02:26:42,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:42,472 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2022-01-31 02:26:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 02:26:42,472 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 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 117 [2022-01-31 02:26:42,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:42,473 INFO L225 Difference]: With dead ends: 171 [2022-01-31 02:26:42,473 INFO L226 Difference]: Without dead ends: 121 [2022-01-31 02:26:42,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=798, Invalid=2984, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 02:26:42,475 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:42,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 71 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:42,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-31 02:26:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-01-31 02:26:42,484 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) [2022-01-31 02:26:42,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2022-01-31 02:26:42,485 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 117 [2022-01-31 02:26:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:42,485 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2022-01-31 02:26:42,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 32 states have internal predecessors, (54), 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) [2022-01-31 02:26:42,486 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2022-01-31 02:26:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-31 02:26:42,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:42,486 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:42,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-31 02:26:42,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-31 02:26:42,699 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:42,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash 780913452, now seen corresponding path program 26 times [2022-01-31 02:26:42,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:42,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886499215] [2022-01-31 02:26:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:42,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 02:26:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 02:26:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 02:26:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 02:26:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 02:26:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:26:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:26:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:26:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:26:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:26:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:26:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:26:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:26:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-01-31 02:26:42,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:42,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886499215] [2022-01-31 02:26:42,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886499215] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:42,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106535561] [2022-01-31 02:26:42,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:26:42,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:42,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:42,918 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) [2022-01-31 02:26:42,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-31 02:26:42,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:26:42,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:42,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-31 02:26:42,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-01-31 02:26:43,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-01-31 02:26:43,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106535561] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:43,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:43,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 23 [2022-01-31 02:26:43,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368157925] [2022-01-31 02:26:43,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:43,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-31 02:26:43,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:43,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-31 02:26:43,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2022-01-31 02:26:43,363 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) [2022-01-31 02:26:43,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:43,670 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2022-01-31 02:26:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 02:26:43,671 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 [2022-01-31 02:26:43,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:43,671 INFO L225 Difference]: With dead ends: 134 [2022-01-31 02:26:43,671 INFO L226 Difference]: Without dead ends: 132 [2022-01-31 02:26:43,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 273 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=445, Invalid=1277, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 02:26:43,672 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 56 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:43,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 55 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:43,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-01-31 02:26:43,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2022-01-31 02:26:43,681 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) [2022-01-31 02:26:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2022-01-31 02:26:43,681 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 118 [2022-01-31 02:26:43,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:43,682 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2022-01-31 02:26:43,682 INFO L471 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) [2022-01-31 02:26:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2022-01-31 02:26:43,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-31 02:26:43,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:43,683 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:43,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-01-31 02:26:43,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-31 02:26:43,891 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:43,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:43,892 INFO L85 PathProgramCache]: Analyzing trace with hash -644951225, now seen corresponding path program 27 times [2022-01-31 02:26:43,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:43,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559948427] [2022-01-31 02:26:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:43,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-31 02:26:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 02:26:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 02:26:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 02:26:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 02:26:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:26:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:26:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:26:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:26:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:26:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:26:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:26:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:26:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:26:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-31 02:26:44,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:44,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559948427] [2022-01-31 02:26:44,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559948427] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:44,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365055284] [2022-01-31 02:26:44,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:26:44,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:44,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:44,292 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) [2022-01-31 02:26:44,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-31 02:26:44,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-01-31 02:26:44,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:44,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-31 02:26:44,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-31 02:26:44,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-31 02:26:44,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365055284] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:44,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:44,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 35 [2022-01-31 02:26:44,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569455726] [2022-01-31 02:26:44,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:44,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 02:26:44,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:44,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 02:26:44,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 02:26:44,780 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 34 states have internal predecessors, (57), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 02:26:45,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:45,400 INFO L93 Difference]: Finished difference Result 182 states and 198 transitions. [2022-01-31 02:26:45,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 02:26:45,400 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 34 states have internal predecessors, (57), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 125 [2022-01-31 02:26:45,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:45,401 INFO L225 Difference]: With dead ends: 182 [2022-01-31 02:26:45,401 INFO L226 Difference]: Without dead ends: 129 [2022-01-31 02:26:45,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=899, Invalid=3391, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 02:26:45,408 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:45,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 62 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:45,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-31 02:26:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-01-31 02:26:45,421 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) [2022-01-31 02:26:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2022-01-31 02:26:45,421 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 125 [2022-01-31 02:26:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:45,422 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2022-01-31 02:26:45,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 34 states have internal predecessors, (57), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 02:26:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2022-01-31 02:26:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-31 02:26:45,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:45,423 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:45,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-01-31 02:26:45,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-31 02:26:45,635 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:45,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1591891629, now seen corresponding path program 28 times [2022-01-31 02:26:45,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:45,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557101397] [2022-01-31 02:26:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:45,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 02:26:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 02:26:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 02:26:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 02:26:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 02:26:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:26:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:26:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:26:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:26:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:26:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:26:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:26:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:26:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:26:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:45,873 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-31 02:26:45,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:45,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557101397] [2022-01-31 02:26:45,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557101397] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:45,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228828507] [2022-01-31 02:26:45,873 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:26:45,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:45,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:45,874 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) [2022-01-31 02:26:45,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-31 02:26:45,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:26:45,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:45,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-31 02:26:45,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-31 02:26:46,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-31 02:26:46,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228828507] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:46,352 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:46,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 24 [2022-01-31 02:26:46,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388089393] [2022-01-31 02:26:46,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:46,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-31 02:26:46,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:46,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-31 02:26:46,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-01-31 02:26:46,353 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) [2022-01-31 02:26:46,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:46,686 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2022-01-31 02:26:46,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-31 02:26:46,686 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 [2022-01-31 02:26:46,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:46,687 INFO L225 Difference]: With dead ends: 142 [2022-01-31 02:26:46,687 INFO L226 Difference]: Without dead ends: 140 [2022-01-31 02:26:46,688 INFO L932 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 [2022-01-31 02:26:46,688 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 64 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:46,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 35 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:46,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-31 02:26:46,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2022-01-31 02:26:46,701 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) [2022-01-31 02:26:46,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2022-01-31 02:26:46,702 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 126 [2022-01-31 02:26:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:46,702 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2022-01-31 02:26:46,702 INFO L471 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) [2022-01-31 02:26:46,702 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2022-01-31 02:26:46,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-31 02:26:46,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:46,704 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:46,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:46,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:46,911 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:46,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:46,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1481475238, now seen corresponding path program 29 times [2022-01-31 02:26:46,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:46,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508625235] [2022-01-31 02:26:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:46,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 02:26:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 02:26:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 02:26:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 02:26:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 02:26:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:26:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:26:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:26:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:26:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:26:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:26:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:26:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:26:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:26:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:26:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-01-31 02:26:47,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:47,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508625235] [2022-01-31 02:26:47,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508625235] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:47,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510347473] [2022-01-31 02:26:47,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:26:47,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:47,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:47,316 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) [2022-01-31 02:26:47,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-31 02:26:47,395 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-01-31 02:26:47,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:47,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-31 02:26:47,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-01-31 02:26:47,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:47,789 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-01-31 02:26:47,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510347473] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:47,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:47,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 37 [2022-01-31 02:26:47,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019008260] [2022-01-31 02:26:47,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:47,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 02:26:47,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:47,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 02:26:47,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 02:26:47,793 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 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) [2022-01-31 02:26:48,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:48,455 INFO L93 Difference]: Finished difference Result 193 states and 210 transitions. [2022-01-31 02:26:48,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 02:26:48,456 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 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 133 [2022-01-31 02:26:48,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:48,457 INFO L225 Difference]: With dead ends: 193 [2022-01-31 02:26:48,457 INFO L226 Difference]: Without dead ends: 137 [2022-01-31 02:26:48,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1006, Invalid=3824, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 02:26:48,459 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:48,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 58 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:48,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-01-31 02:26:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-01-31 02:26:48,469 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) [2022-01-31 02:26:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2022-01-31 02:26:48,470 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 133 [2022-01-31 02:26:48,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:48,470 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2022-01-31 02:26:48,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 36 states have internal predecessors, (60), 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) [2022-01-31 02:26:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2022-01-31 02:26:48,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-31 02:26:48,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:48,471 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:48,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:48,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-01-31 02:26:48,688 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:48,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:48,688 INFO L85 PathProgramCache]: Analyzing trace with hash -223198708, now seen corresponding path program 30 times [2022-01-31 02:26:48,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:48,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992502655] [2022-01-31 02:26:48,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:48,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 02:26:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 02:26:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 02:26:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 02:26:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 02:26:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:26:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:26:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:26:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:26:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:26:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:26:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:26:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:26:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:26:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:26:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-01-31 02:26:48,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:48,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992502655] [2022-01-31 02:26:48,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992502655] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:48,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883329126] [2022-01-31 02:26:48,943 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:26:48,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:48,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:48,944 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) [2022-01-31 02:26:48,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-31 02:26:49,023 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2022-01-31 02:26:49,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:49,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-31 02:26:49,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-01-31 02:26:49,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-01-31 02:26:49,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883329126] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:49,456 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:49,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 25 [2022-01-31 02:26:49,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199190367] [2022-01-31 02:26:49,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:49,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-31 02:26:49,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:49,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-31 02:26:49,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2022-01-31 02:26:49,458 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) [2022-01-31 02:26:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:49,856 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2022-01-31 02:26:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-31 02:26:49,856 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 [2022-01-31 02:26:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:49,857 INFO L225 Difference]: With dead ends: 150 [2022-01-31 02:26:49,857 INFO L226 Difference]: Without dead ends: 148 [2022-01-31 02:26:49,858 INFO L932 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 [2022-01-31 02:26:49,858 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:49,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 65 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:49,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-01-31 02:26:49,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2022-01-31 02:26:49,869 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) [2022-01-31 02:26:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2022-01-31 02:26:49,870 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 134 [2022-01-31 02:26:49,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:49,870 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2022-01-31 02:26:49,870 INFO L471 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) [2022-01-31 02:26:49,870 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2022-01-31 02:26:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-31 02:26:49,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:49,871 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:49,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:50,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:50,091 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:50,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:50,092 INFO L85 PathProgramCache]: Analyzing trace with hash -295772057, now seen corresponding path program 31 times [2022-01-31 02:26:50,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:50,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344295573] [2022-01-31 02:26:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:50,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 02:26:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 02:26:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 02:26:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 02:26:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 02:26:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:26:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:26:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:26:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:26:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:26:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:26:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:26:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:26:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:26:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:26:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:26:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-01-31 02:26:50,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:50,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344295573] [2022-01-31 02:26:50,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344295573] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:50,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605043257] [2022-01-31 02:26:50,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:26:50,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:50,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:50,552 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) [2022-01-31 02:26:50,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-31 02:26:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:50,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-31 02:26:50,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-01-31 02:26:50,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-01-31 02:26:51,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605043257] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:51,044 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:51,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 39 [2022-01-31 02:26:51,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306951918] [2022-01-31 02:26:51,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:51,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 02:26:51,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:51,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 02:26:51,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 02:26:51,045 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 38 states have internal predecessors, (63), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 02:26:51,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:51,838 INFO L93 Difference]: Finished difference Result 204 states and 222 transitions. [2022-01-31 02:26:51,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 02:26:51,839 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 38 states have internal predecessors, (63), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 141 [2022-01-31 02:26:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:51,840 INFO L225 Difference]: With dead ends: 204 [2022-01-31 02:26:51,840 INFO L226 Difference]: Without dead ends: 145 [2022-01-31 02:26:51,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1119, Invalid=4283, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 02:26:51,842 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:51,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 94 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:26:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-31 02:26:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-01-31 02:26:51,852 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) [2022-01-31 02:26:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2022-01-31 02:26:51,853 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 141 [2022-01-31 02:26:51,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:51,853 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2022-01-31 02:26:51,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 38 states have internal predecessors, (63), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-31 02:26:51,853 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2022-01-31 02:26:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-31 02:26:51,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:51,854 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:51,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-01-31 02:26:52,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:52,077 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2113591245, now seen corresponding path program 32 times [2022-01-31 02:26:52,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:52,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368881057] [2022-01-31 02:26:52,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:52,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 02:26:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 02:26:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 02:26:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 02:26:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 02:26:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:26:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:26:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:26:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:26:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:26:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:26:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:26:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:26:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:26:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:26:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:26:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-01-31 02:26:52,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:52,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368881057] [2022-01-31 02:26:52,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368881057] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:52,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510707332] [2022-01-31 02:26:52,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:26:52,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:52,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:52,348 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) [2022-01-31 02:26:52,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-31 02:26:52,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:26:52,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:52,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-31 02:26:52,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-01-31 02:26:52,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-01-31 02:26:52,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510707332] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:52,862 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:52,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 26 [2022-01-31 02:26:52,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765931037] [2022-01-31 02:26:52,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:52,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 02:26:52,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:52,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 02:26:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2022-01-31 02:26:52,863 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) [2022-01-31 02:26:53,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:53,229 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2022-01-31 02:26:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 02:26:53,229 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 [2022-01-31 02:26:53,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:53,230 INFO L225 Difference]: With dead ends: 158 [2022-01-31 02:26:53,230 INFO L226 Difference]: Without dead ends: 156 [2022-01-31 02:26:53,231 INFO L932 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 [2022-01-31 02:26:53,231 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 59 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:53,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 60 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:53,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-01-31 02:26:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2022-01-31 02:26:53,243 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) [2022-01-31 02:26:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2022-01-31 02:26:53,244 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 142 [2022-01-31 02:26:53,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:53,244 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2022-01-31 02:26:53,244 INFO L471 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) [2022-01-31 02:26:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2022-01-31 02:26:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-31 02:26:53,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:53,245 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:53,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-31 02:26:53,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-31 02:26:53,463 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:53,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash 32997254, now seen corresponding path program 33 times [2022-01-31 02:26:53,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:53,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402195119] [2022-01-31 02:26:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:53,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 02:26:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 02:26:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 02:26:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 02:26:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 02:26:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:26:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:26:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:26:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:26:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:26:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:26:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:26:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:26:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:26:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:26:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:26:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:26:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-01-31 02:26:53,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:53,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402195119] [2022-01-31 02:26:53,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402195119] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:53,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22795728] [2022-01-31 02:26:53,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:26:53,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:53,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:53,932 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) [2022-01-31 02:26:53,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-31 02:26:54,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-01-31 02:26:54,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:54,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-31 02:26:54,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-01-31 02:26:54,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-01-31 02:26:54,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22795728] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:54,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:54,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 41 [2022-01-31 02:26:54,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418575297] [2022-01-31 02:26:54,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:54,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 02:26:54,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:54,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 02:26:54,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 02:26:54,426 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 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) [2022-01-31 02:26:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:55,180 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2022-01-31 02:26:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 02:26:55,180 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 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 149 [2022-01-31 02:26:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:55,181 INFO L225 Difference]: With dead ends: 215 [2022-01-31 02:26:55,188 INFO L226 Difference]: Without dead ends: 153 [2022-01-31 02:26:55,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1238, Invalid=4768, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 02:26:55,189 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:55,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 75 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:26:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-01-31 02:26:55,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-01-31 02:26:55,201 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) [2022-01-31 02:26:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2022-01-31 02:26:55,203 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 149 [2022-01-31 02:26:55,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:55,203 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2022-01-31 02:26:55,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 40 states have internal predecessors, (66), 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) [2022-01-31 02:26:55,203 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2022-01-31 02:26:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-31 02:26:55,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:55,204 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:55,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:55,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-31 02:26:55,419 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:55,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:55,420 INFO L85 PathProgramCache]: Analyzing trace with hash -521096980, now seen corresponding path program 34 times [2022-01-31 02:26:55,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:55,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614661735] [2022-01-31 02:26:55,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:55,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 02:26:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 02:26:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 02:26:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 02:26:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 02:26:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:26:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:26:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:26:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:26:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:26:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:26:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:26:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:26:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:26:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:26:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:26:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:26:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:55,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-01-31 02:26:55,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:55,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614661735] [2022-01-31 02:26:55,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614661735] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:55,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937157048] [2022-01-31 02:26:55,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:26:55,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:55,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:55,696 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) [2022-01-31 02:26:55,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-31 02:26:55,773 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:26:55,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:55,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-31 02:26:55,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-01-31 02:26:56,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-01-31 02:26:56,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937157048] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:56,238 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:56,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 27 [2022-01-31 02:26:56,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887125496] [2022-01-31 02:26:56,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:56,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-31 02:26:56,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:56,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-31 02:26:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2022-01-31 02:26:56,240 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) [2022-01-31 02:26:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:56,618 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2022-01-31 02:26:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-31 02:26:56,618 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 [2022-01-31 02:26:56,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:56,619 INFO L225 Difference]: With dead ends: 166 [2022-01-31 02:26:56,619 INFO L226 Difference]: Without dead ends: 164 [2022-01-31 02:26:56,619 INFO L932 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 [2022-01-31 02:26:56,620 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 76 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:56,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 45 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-31 02:26:56,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2022-01-31 02:26:56,633 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) [2022-01-31 02:26:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2022-01-31 02:26:56,633 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 150 [2022-01-31 02:26:56,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:56,634 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2022-01-31 02:26:56,634 INFO L471 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) [2022-01-31 02:26:56,634 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2022-01-31 02:26:56,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-31 02:26:56,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:56,635 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:56,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:56,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-01-31 02:26:56,847 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:56,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:56,848 INFO L85 PathProgramCache]: Analyzing trace with hash -995101305, now seen corresponding path program 35 times [2022-01-31 02:26:56,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:56,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268665952] [2022-01-31 02:26:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:56,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-31 02:26:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 02:26:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 02:26:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 02:26:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 02:26:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:26:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:26:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:26:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:26:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:26:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:26:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:26:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:26:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:26:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:26:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:26:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:26:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:26:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-01-31 02:26:57,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:57,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268665952] [2022-01-31 02:26:57,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268665952] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:57,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589409892] [2022-01-31 02:26:57,364 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:26:57,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:57,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:57,368 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) [2022-01-31 02:26:57,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-31 02:26:57,457 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2022-01-31 02:26:57,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:57,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-31 02:26:57,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-01-31 02:26:57,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-01-31 02:26:57,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589409892] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:57,916 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:57,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 43 [2022-01-31 02:26:57,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787744936] [2022-01-31 02:26:57,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:57,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 02:26:57,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:57,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 02:26:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 02:26:57,918 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 43 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 42 states have internal predecessors, (69), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 02:26:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:26:58,656 INFO L93 Difference]: Finished difference Result 226 states and 246 transitions. [2022-01-31 02:26:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 02:26:58,656 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 42 states have internal predecessors, (69), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 157 [2022-01-31 02:26:58,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:26:58,657 INFO L225 Difference]: With dead ends: 226 [2022-01-31 02:26:58,657 INFO L226 Difference]: Without dead ends: 161 [2022-01-31 02:26:58,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1549 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1363, Invalid=5279, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 02:26:58,659 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:26:58,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 61 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:26:58,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-01-31 02:26:58,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-01-31 02:26:58,673 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) [2022-01-31 02:26:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2022-01-31 02:26:58,673 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 157 [2022-01-31 02:26:58,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:26:58,674 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2022-01-31 02:26:58,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 42 states have internal predecessors, (69), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-01-31 02:26:58,674 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2022-01-31 02:26:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-31 02:26:58,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:26:58,675 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:26:58,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-31 02:26:58,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:58,891 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:26:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:26:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash -953392915, now seen corresponding path program 36 times [2022-01-31 02:26:58,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:26:58,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595268385] [2022-01-31 02:26:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:26:58,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:26:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:26:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 02:26:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 02:26:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 02:26:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 02:26:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 02:26:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:26:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:26:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:26:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:26:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:26:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:26:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:26:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:26:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:26:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:26:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:26:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:26:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:26:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:26:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-01-31 02:26:59,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:26:59,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595268385] [2022-01-31 02:26:59,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595268385] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:26:59,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839393083] [2022-01-31 02:26:59,186 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:26:59,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:26:59,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:26:59,188 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) [2022-01-31 02:26:59,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-31 02:26:59,281 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-01-31 02:26:59,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:26:59,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-31 02:26:59,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:26:59,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-01-31 02:26:59,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:26:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-01-31 02:26:59,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839393083] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:26:59,845 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:26:59,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 28 [2022-01-31 02:26:59,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617620545] [2022-01-31 02:26:59,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:26:59,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-31 02:26:59,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:26:59,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-31 02:26:59,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=510, Unknown=0, NotChecked=0, Total=756 [2022-01-31 02:26:59,846 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) [2022-01-31 02:27:00,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:00,300 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2022-01-31 02:27:00,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-31 02:27:00,301 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 [2022-01-31 02:27:00,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:00,302 INFO L225 Difference]: With dead ends: 174 [2022-01-31 02:27:00,302 INFO L226 Difference]: Without dead ends: 172 [2022-01-31 02:27:00,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 368 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=730, Invalid=1922, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 02:27:00,303 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 66 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:00,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 55 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:27:00,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-31 02:27:00,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2022-01-31 02:27:00,315 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) [2022-01-31 02:27:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2022-01-31 02:27:00,315 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 158 [2022-01-31 02:27:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:00,316 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2022-01-31 02:27:00,316 INFO L471 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) [2022-01-31 02:27:00,316 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2022-01-31 02:27:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-31 02:27:00,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:00,317 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:00,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-31 02:27:00,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-31 02:27:00,517 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:00,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:00,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1395690906, now seen corresponding path program 37 times [2022-01-31 02:27:00,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:00,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911953500] [2022-01-31 02:27:00,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:00,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 02:27:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 02:27:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 02:27:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 02:27:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 02:27:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:27:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:27:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:27:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:27:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:27:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:27:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:27:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:27:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:27:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:27:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:27:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:27:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:27:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:27:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-01-31 02:27:01,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:01,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911953500] [2022-01-31 02:27:01,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911953500] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:01,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540639634] [2022-01-31 02:27:01,116 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:27:01,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:01,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:01,118 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) [2022-01-31 02:27:01,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-31 02:27:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:01,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-31 02:27:01,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-01-31 02:27:01,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-01-31 02:27:01,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540639634] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:01,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:01,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 45 [2022-01-31 02:27:01,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603196783] [2022-01-31 02:27:01,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:01,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 02:27:01,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:01,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 02:27:01,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 02:27:01,694 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 45 states, 45 states have (on average 1.6) internal successors, (72), 44 states have internal predecessors, (72), 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) [2022-01-31 02:27:02,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:02,485 INFO L93 Difference]: Finished difference Result 237 states and 258 transitions. [2022-01-31 02:27:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 02:27:02,485 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.6) internal successors, (72), 44 states have internal predecessors, (72), 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 165 [2022-01-31 02:27:02,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:02,486 INFO L225 Difference]: With dead ends: 237 [2022-01-31 02:27:02,486 INFO L226 Difference]: Without dead ends: 169 [2022-01-31 02:27:02,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 368 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1494, Invalid=5816, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 02:27:02,488 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:02,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 72 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:27:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-01-31 02:27:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-01-31 02:27:02,503 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) [2022-01-31 02:27:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2022-01-31 02:27:02,504 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 165 [2022-01-31 02:27:02,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:02,504 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2022-01-31 02:27:02,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.6) internal successors, (72), 44 states have internal predecessors, (72), 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) [2022-01-31 02:27:02,504 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2022-01-31 02:27:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-31 02:27:02,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:02,505 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:02,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:02,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-31 02:27:02,723 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:02,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:02,724 INFO L85 PathProgramCache]: Analyzing trace with hash 552933324, now seen corresponding path program 38 times [2022-01-31 02:27:02,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:02,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097159991] [2022-01-31 02:27:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:02,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 02:27:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 02:27:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 02:27:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 02:27:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 02:27:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:27:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:27:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:27:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:27:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:27:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:27:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:27:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:27:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:27:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:27:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:27:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:27:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:27:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:27:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-01-31 02:27:03,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:03,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097159991] [2022-01-31 02:27:03,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097159991] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:03,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722483411] [2022-01-31 02:27:03,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:27:03,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:03,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:03,048 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) [2022-01-31 02:27:03,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-31 02:27:03,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:27:03,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:03,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-31 02:27:03,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-01-31 02:27:03,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-01-31 02:27:03,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722483411] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:03,657 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:03,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 29 [2022-01-31 02:27:03,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992773645] [2022-01-31 02:27:03,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:03,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-31 02:27:03,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:03,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-31 02:27:03,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=544, Unknown=0, NotChecked=0, Total=812 [2022-01-31 02:27:03,658 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) [2022-01-31 02:27:04,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:04,064 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2022-01-31 02:27:04,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-31 02:27:04,064 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 [2022-01-31 02:27:04,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:04,065 INFO L225 Difference]: With dead ends: 182 [2022-01-31 02:27:04,065 INFO L226 Difference]: Without dead ends: 180 [2022-01-31 02:27:04,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=796, Invalid=2066, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 02:27:04,066 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 68 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:04,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 40 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:27:04,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-01-31 02:27:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2022-01-31 02:27:04,080 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) [2022-01-31 02:27:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2022-01-31 02:27:04,081 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 166 [2022-01-31 02:27:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:04,081 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2022-01-31 02:27:04,081 INFO L471 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) [2022-01-31 02:27:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2022-01-31 02:27:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-31 02:27:04,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:04,082 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:04,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:04,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-31 02:27:04,306 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:04,306 INFO L85 PathProgramCache]: Analyzing trace with hash -720104793, now seen corresponding path program 39 times [2022-01-31 02:27:04,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:04,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547366402] [2022-01-31 02:27:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:04,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-31 02:27:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 02:27:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 02:27:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 02:27:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 02:27:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:27:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:27:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:27:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:27:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:27:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:27:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:27:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:27:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:27:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:27:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:27:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:27:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:27:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:27:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:27:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-01-31 02:27:04,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:04,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547366402] [2022-01-31 02:27:04,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547366402] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:04,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950537111] [2022-01-31 02:27:04,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:27:04,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:04,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:04,887 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) [2022-01-31 02:27:04,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-31 02:27:04,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-01-31 02:27:04,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:04,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-31 02:27:04,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-01-31 02:27:05,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-01-31 02:27:05,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950537111] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:05,472 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:05,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 47 [2022-01-31 02:27:05,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640600341] [2022-01-31 02:27:05,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:05,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 02:27:05,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:05,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 02:27:05,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 02:27:05,474 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 47 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 46 states have internal predecessors, (75), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 02:27:06,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:06,452 INFO L93 Difference]: Finished difference Result 248 states and 270 transitions. [2022-01-31 02:27:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 02:27:06,452 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 46 states have internal predecessors, (75), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 173 [2022-01-31 02:27:06,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:06,453 INFO L225 Difference]: With dead ends: 248 [2022-01-31 02:27:06,453 INFO L226 Difference]: Without dead ends: 177 [2022-01-31 02:27:06,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 386 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1631, Invalid=6379, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 02:27:06,454 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:06,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 73 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:06,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-01-31 02:27:06,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-01-31 02:27:06,469 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) [2022-01-31 02:27:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2022-01-31 02:27:06,470 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 173 [2022-01-31 02:27:06,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:06,470 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2022-01-31 02:27:06,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 46 states have internal predecessors, (75), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-31 02:27:06,470 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2022-01-31 02:27:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-31 02:27:06,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:06,471 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:06,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-01-31 02:27:06,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-01-31 02:27:06,683 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:06,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:06,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2096565747, now seen corresponding path program 40 times [2022-01-31 02:27:06,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:06,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102635435] [2022-01-31 02:27:06,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:06,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:06,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 02:27:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 02:27:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:06,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 02:27:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:06,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 02:27:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:06,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:27:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:06,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:27:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:27:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:06,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:27:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:27:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:06,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:27:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:06,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:27:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:07,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:27:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:27:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:07,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:27:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:07,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:27:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:07,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:27:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:07,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:27:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:07,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:27:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:07,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:27:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:07,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:27:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-01-31 02:27:07,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:07,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102635435] [2022-01-31 02:27:07,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102635435] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:07,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424528923] [2022-01-31 02:27:07,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:27:07,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:07,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:07,016 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) [2022-01-31 02:27:07,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-31 02:27:07,105 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:27:07,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:07,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-31 02:27:07,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-01-31 02:27:07,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-01-31 02:27:07,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424528923] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:07,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:07,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 30 [2022-01-31 02:27:07,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47177551] [2022-01-31 02:27:07,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:07,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 02:27:07,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 02:27:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=579, Unknown=0, NotChecked=0, Total=870 [2022-01-31 02:27:07,715 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) [2022-01-31 02:27:08,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:08,178 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2022-01-31 02:27:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 02:27:08,179 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 [2022-01-31 02:27:08,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:08,180 INFO L225 Difference]: With dead ends: 190 [2022-01-31 02:27:08,180 INFO L226 Difference]: Without dead ends: 188 [2022-01-31 02:27:08,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 406 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 02:27:08,182 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 68 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:08,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 60 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:27:08,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-01-31 02:27:08,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2022-01-31 02:27:08,197 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) [2022-01-31 02:27:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2022-01-31 02:27:08,198 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 174 [2022-01-31 02:27:08,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:08,198 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2022-01-31 02:27:08,199 INFO L471 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) [2022-01-31 02:27:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2022-01-31 02:27:08,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-31 02:27:08,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:08,200 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:08,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:08,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:08,423 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:08,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:08,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1476174522, now seen corresponding path program 41 times [2022-01-31 02:27:08,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:08,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846649597] [2022-01-31 02:27:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:08,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-31 02:27:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 02:27:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 02:27:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 02:27:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:27:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:27:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:27:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:27:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:27:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:27:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:27:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:27:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:27:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:27:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:27:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:27:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:27:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:27:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:27:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:27:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:27:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-01-31 02:27:09,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:09,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846649597] [2022-01-31 02:27:09,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846649597] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:09,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056063577] [2022-01-31 02:27:09,043 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:27:09,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:09,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:09,044 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) [2022-01-31 02:27:09,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-31 02:27:09,128 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-01-31 02:27:09,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:09,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 46 conjunts are in the unsatisfiable core [2022-01-31 02:27:09,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-01-31 02:27:09,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-01-31 02:27:09,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056063577] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:09,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:09,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 49 [2022-01-31 02:27:09,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057252912] [2022-01-31 02:27:09,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:09,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 02:27:09,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 02:27:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1773, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 02:27:09,670 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 48 states have internal predecessors, (78), 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) [2022-01-31 02:27:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:10,629 INFO L93 Difference]: Finished difference Result 259 states and 282 transitions. [2022-01-31 02:27:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 02:27:10,630 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 48 states have internal predecessors, (78), 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 181 [2022-01-31 02:27:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:10,631 INFO L225 Difference]: With dead ends: 259 [2022-01-31 02:27:10,631 INFO L226 Difference]: Without dead ends: 185 [2022-01-31 02:27:10,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 404 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1774, Invalid=6968, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 02:27:10,637 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:10,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 79 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:10,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-01-31 02:27:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-01-31 02:27:10,654 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) [2022-01-31 02:27:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2022-01-31 02:27:10,655 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 181 [2022-01-31 02:27:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:10,656 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2022-01-31 02:27:10,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 48 states have internal predecessors, (78), 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) [2022-01-31 02:27:10,656 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2022-01-31 02:27:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-31 02:27:10,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:10,657 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:10,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:10,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:10,871 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash -772966740, now seen corresponding path program 42 times [2022-01-31 02:27:10,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:10,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871156074] [2022-01-31 02:27:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:10,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 02:27:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 02:27:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 02:27:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 02:27:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:27:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:27:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:27:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:27:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:27:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:27:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:27:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:27:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:27:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:27:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:27:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:27:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:27:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:27:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:27:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:27:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:27:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-01-31 02:27:11,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:11,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871156074] [2022-01-31 02:27:11,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871156074] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:11,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76484468] [2022-01-31 02:27:11,232 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:27:11,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:11,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:11,233 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) [2022-01-31 02:27:11,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-31 02:27:11,328 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-01-31 02:27:11,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:11,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-31 02:27:11,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-01-31 02:27:11,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-01-31 02:27:11,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76484468] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:11,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:11,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 31 [2022-01-31 02:27:11,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519203142] [2022-01-31 02:27:11,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:11,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-31 02:27:11,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:11,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-31 02:27:11,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2022-01-31 02:27:11,881 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) [2022-01-31 02:27:12,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:12,322 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2022-01-31 02:27:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 02:27:12,322 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 [2022-01-31 02:27:12,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:12,323 INFO L225 Difference]: With dead ends: 198 [2022-01-31 02:27:12,323 INFO L226 Difference]: Without dead ends: 196 [2022-01-31 02:27:12,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 425 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=937, Invalid=2369, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 02:27:12,324 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 82 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:12,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 30 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:27:12,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-01-31 02:27:12,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 192. [2022-01-31 02:27:12,341 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) [2022-01-31 02:27:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2022-01-31 02:27:12,341 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 182 [2022-01-31 02:27:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:12,342 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2022-01-31 02:27:12,342 INFO L471 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) [2022-01-31 02:27:12,342 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2022-01-31 02:27:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-31 02:27:12,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:12,343 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:12,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-01-31 02:27:12,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-01-31 02:27:12,559 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:12,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:12,560 INFO L85 PathProgramCache]: Analyzing trace with hash 815609799, now seen corresponding path program 43 times [2022-01-31 02:27:12,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:12,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469137258] [2022-01-31 02:27:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:12,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-01-31 02:27:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 02:27:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 02:27:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 02:27:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:27:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:27:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:27:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:27:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:27:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:27:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:27:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:27:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:27:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:27:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:27:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:27:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:27:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:27:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:27:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:27:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:27:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:27:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-01-31 02:27:13,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:13,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469137258] [2022-01-31 02:27:13,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469137258] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:13,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308127182] [2022-01-31 02:27:13,311 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:27:13,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:13,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:13,316 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) [2022-01-31 02:27:13,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-31 02:27:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:13,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-31 02:27:13,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-01-31 02:27:13,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-01-31 02:27:13,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308127182] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:13,938 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:13,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 51 [2022-01-31 02:27:13,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594923601] [2022-01-31 02:27:13,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:13,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 02:27:13,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:13,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 02:27:13,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=1922, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 02:27:13,939 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 50 states have internal predecessors, (81), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 02:27:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:14,915 INFO L93 Difference]: Finished difference Result 270 states and 294 transitions. [2022-01-31 02:27:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 02:27:14,916 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 50 states have internal predecessors, (81), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 189 [2022-01-31 02:27:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:14,917 INFO L225 Difference]: With dead ends: 270 [2022-01-31 02:27:14,917 INFO L226 Difference]: Without dead ends: 193 [2022-01-31 02:27:14,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 422 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2245 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1923, Invalid=7583, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 02:27:14,919 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:14,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 75 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:14,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-01-31 02:27:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-01-31 02:27:14,932 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) [2022-01-31 02:27:14,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2022-01-31 02:27:14,932 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 189 [2022-01-31 02:27:14,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:14,933 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2022-01-31 02:27:14,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 50 states have internal predecessors, (81), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-31 02:27:14,933 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2022-01-31 02:27:14,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-31 02:27:14,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:14,933 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:14,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-01-31 02:27:15,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-01-31 02:27:15,134 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:15,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:15,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1834841299, now seen corresponding path program 44 times [2022-01-31 02:27:15,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:15,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536235836] [2022-01-31 02:27:15,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:15,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 02:27:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 02:27:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 02:27:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 02:27:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:27:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:27:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:27:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:27:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:27:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:27:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:27:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:27:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:27:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:27:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:27:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:27:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:27:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:27:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:27:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:27:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:27:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:27:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-01-31 02:27:15,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:15,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536235836] [2022-01-31 02:27:15,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536235836] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:15,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378264502] [2022-01-31 02:27:15,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:27:15,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:15,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:15,467 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) [2022-01-31 02:27:15,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-31 02:27:15,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:27:15,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:15,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-31 02:27:15,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:15,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-01-31 02:27:15,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-01-31 02:27:16,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378264502] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:16,129 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:16,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 32 [2022-01-31 02:27:16,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911182174] [2022-01-31 02:27:16,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:16,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-31 02:27:16,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:16,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-31 02:27:16,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=652, Unknown=0, NotChecked=0, Total=992 [2022-01-31 02:27:16,130 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) [2022-01-31 02:27:16,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:16,608 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2022-01-31 02:27:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-31 02:27:16,609 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 [2022-01-31 02:27:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:16,609 INFO L225 Difference]: With dead ends: 206 [2022-01-31 02:27:16,609 INFO L226 Difference]: Without dead ends: 204 [2022-01-31 02:27:16,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 444 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1012, Invalid=2528, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 02:27:16,610 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 79 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:16,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 45 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:27:16,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-01-31 02:27:16,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2022-01-31 02:27:16,640 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) [2022-01-31 02:27:16,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2022-01-31 02:27:16,641 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 190 [2022-01-31 02:27:16,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:16,641 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2022-01-31 02:27:16,641 INFO L471 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) [2022-01-31 02:27:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2022-01-31 02:27:16,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-01-31 02:27:16,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:16,642 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:16,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:16,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-31 02:27:16,843 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:16,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:16,843 INFO L85 PathProgramCache]: Analyzing trace with hash 440483878, now seen corresponding path program 45 times [2022-01-31 02:27:16,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:16,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767452606] [2022-01-31 02:27:16,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:16,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-31 02:27:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 02:27:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 02:27:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 02:27:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:27:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:27:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:27:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:27:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:27:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:27:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:27:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:27:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:27:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:27:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:27:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:27:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:27:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:27:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:27:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:27:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:27:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:27:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:27:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-01-31 02:27:17,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:17,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767452606] [2022-01-31 02:27:17,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767452606] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:17,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386341966] [2022-01-31 02:27:17,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:27:17,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:17,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:17,614 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) [2022-01-31 02:27:17,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-31 02:27:17,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-01-31 02:27:17,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:17,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-31 02:27:17,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-01-31 02:27:17,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-01-31 02:27:18,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386341966] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:18,278 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:18,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 53 [2022-01-31 02:27:18,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523841988] [2022-01-31 02:27:18,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:18,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 02:27:18,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:18,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 02:27:18,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=2077, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 02:27:18,279 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 53 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 52 states have internal predecessors, (84), 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) [2022-01-31 02:27:19,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:19,295 INFO L93 Difference]: Finished difference Result 281 states and 306 transitions. [2022-01-31 02:27:19,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 02:27:19,296 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 52 states have internal predecessors, (84), 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 197 [2022-01-31 02:27:19,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:19,297 INFO L225 Difference]: With dead ends: 281 [2022-01-31 02:27:19,297 INFO L226 Difference]: Without dead ends: 201 [2022-01-31 02:27:19,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 440 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2439 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2078, Invalid=8224, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 02:27:19,299 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:19,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 76 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:19,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-01-31 02:27:19,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-01-31 02:27:19,324 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) [2022-01-31 02:27:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2022-01-31 02:27:19,325 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 197 [2022-01-31 02:27:19,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:19,325 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2022-01-31 02:27:19,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 52 states have internal predecessors, (84), 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) [2022-01-31 02:27:19,325 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2022-01-31 02:27:19,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-31 02:27:19,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:19,326 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:19,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:19,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:19,527 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:19,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:19,527 INFO L85 PathProgramCache]: Analyzing trace with hash -360198772, now seen corresponding path program 46 times [2022-01-31 02:27:19,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:19,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161609658] [2022-01-31 02:27:19,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:19,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 02:27:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 02:27:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 02:27:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 02:27:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:27:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:27:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:27:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:27:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:27:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:27:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:27:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:27:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:27:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:27:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:27:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:27:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:27:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:27:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:27:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:27:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:27:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:27:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:27:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-01-31 02:27:19,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:19,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161609658] [2022-01-31 02:27:19,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161609658] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:19,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842890646] [2022-01-31 02:27:19,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:27:19,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:19,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:19,896 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) [2022-01-31 02:27:19,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-31 02:27:19,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:27:19,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:19,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-31 02:27:19,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:20,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-01-31 02:27:20,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-01-31 02:27:20,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842890646] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:20,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:20,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 33 [2022-01-31 02:27:20,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676638393] [2022-01-31 02:27:20,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:20,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-31 02:27:20,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:20,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-31 02:27:20,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 02:27:20,598 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) [2022-01-31 02:27:21,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:21,092 INFO L93 Difference]: Finished difference Result 214 states and 216 transitions. [2022-01-31 02:27:21,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-31 02:27:21,093 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 [2022-01-31 02:27:21,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:21,094 INFO L225 Difference]: With dead ends: 214 [2022-01-31 02:27:21,094 INFO L226 Difference]: Without dead ends: 212 [2022-01-31 02:27:21,096 INFO L932 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 [2022-01-31 02:27:21,096 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 78 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:21,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 40 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:27:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-01-31 02:27:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 208. [2022-01-31 02:27:21,112 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) [2022-01-31 02:27:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2022-01-31 02:27:21,112 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 198 [2022-01-31 02:27:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:21,112 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2022-01-31 02:27:21,113 INFO L471 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) [2022-01-31 02:27:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2022-01-31 02:27:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-01-31 02:27:21,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:21,114 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:21,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-01-31 02:27:21,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-31 02:27:21,321 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:21,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:21,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1596103449, now seen corresponding path program 47 times [2022-01-31 02:27:21,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:21,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109797310] [2022-01-31 02:27:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:21,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 02:27:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 02:27:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 02:27:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 02:27:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:27:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:27:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:27:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:27:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:27:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:27:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:27:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:27:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:27:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:27:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:27:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:27:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:27:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:27:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:27:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:27:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:27:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:27:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:27:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:27:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-01-31 02:27:22,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:22,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109797310] [2022-01-31 02:27:22,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109797310] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:22,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293828548] [2022-01-31 02:27:22,083 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:27:22,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:22,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:22,088 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) [2022-01-31 02:27:22,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-31 02:27:22,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2022-01-31 02:27:22,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:22,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-31 02:27:22,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-01-31 02:27:22,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-01-31 02:27:22,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293828548] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:22,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:22,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 55 [2022-01-31 02:27:22,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677803539] [2022-01-31 02:27:22,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:22,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 02:27:22,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:22,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 02:27:22,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=2238, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 02:27:22,770 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 55 states, 55 states have (on average 1.5818181818181818) internal successors, (87), 54 states have internal predecessors, (87), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 02:27:23,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:23,865 INFO L93 Difference]: Finished difference Result 292 states and 318 transitions. [2022-01-31 02:27:23,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 02:27:23,866 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.5818181818181818) internal successors, (87), 54 states have internal predecessors, (87), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 205 [2022-01-31 02:27:23,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:23,866 INFO L225 Difference]: With dead ends: 292 [2022-01-31 02:27:23,866 INFO L226 Difference]: Without dead ends: 209 [2022-01-31 02:27:23,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 458 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2239, Invalid=8891, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 02:27:23,868 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:23,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 82 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-01-31 02:27:23,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-01-31 02:27:23,887 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) [2022-01-31 02:27:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2022-01-31 02:27:23,888 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 205 [2022-01-31 02:27:23,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:23,888 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2022-01-31 02:27:23,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.5818181818181818) internal successors, (87), 54 states have internal predecessors, (87), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-31 02:27:23,888 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2022-01-31 02:27:23,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-01-31 02:27:23,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:23,889 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:23,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-01-31 02:27:24,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-31 02:27:24,095 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1886704563, now seen corresponding path program 48 times [2022-01-31 02:27:24,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:24,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769949497] [2022-01-31 02:27:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:24,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 02:27:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 02:27:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 02:27:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 02:27:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:27:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:27:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:27:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:27:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:27:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:27:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:27:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:27:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:27:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:27:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:27:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:27:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:27:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:27:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:27:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:27:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:27:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:27:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:27:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:27:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-01-31 02:27:24,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:24,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769949497] [2022-01-31 02:27:24,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769949497] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:24,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125938225] [2022-01-31 02:27:24,466 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:27:24,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:24,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:24,468 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) [2022-01-31 02:27:24,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-31 02:27:24,581 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2022-01-31 02:27:24,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:24,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-31 02:27:24,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-01-31 02:27:24,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-01-31 02:27:25,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125938225] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:25,252 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:25,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 34 [2022-01-31 02:27:25,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995938551] [2022-01-31 02:27:25,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:25,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-31 02:27:25,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:25,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-31 02:27:25,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=729, Unknown=0, NotChecked=0, Total=1122 [2022-01-31 02:27:25,255 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) [2022-01-31 02:27:25,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:25,804 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2022-01-31 02:27:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-31 02:27:25,804 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 [2022-01-31 02:27:25,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:25,805 INFO L225 Difference]: With dead ends: 222 [2022-01-31 02:27:25,805 INFO L226 Difference]: Without dead ends: 220 [2022-01-31 02:27:25,806 INFO L932 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 [2022-01-31 02:27:25,806 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 81 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:25,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 70 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:25,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-01-31 02:27:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2022-01-31 02:27:25,827 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) [2022-01-31 02:27:25,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2022-01-31 02:27:25,827 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 206 [2022-01-31 02:27:25,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:25,828 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2022-01-31 02:27:25,828 INFO L471 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) [2022-01-31 02:27:25,828 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2022-01-31 02:27:25,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-01-31 02:27:25,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:25,829 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:25,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:26,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-31 02:27:26,053 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:26,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:26,053 INFO L85 PathProgramCache]: Analyzing trace with hash -508093690, now seen corresponding path program 49 times [2022-01-31 02:27:26,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:26,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969708935] [2022-01-31 02:27:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:26,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-31 02:27:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 02:27:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 02:27:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 02:27:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:27:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:27:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:27:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:27:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:27:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:27:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:27:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:27:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:27:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:27:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:27:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:27:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:27:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:27:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:27:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:27:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:27:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:27:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:27:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:27:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:27:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-01-31 02:27:26,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:26,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969708935] [2022-01-31 02:27:26,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969708935] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:26,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948901367] [2022-01-31 02:27:26,865 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:27:26,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:26,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:26,868 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) [2022-01-31 02:27:26,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-31 02:27:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:26,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-31 02:27:26,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-01-31 02:27:27,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-01-31 02:27:27,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948901367] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:27,627 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:27,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 57 [2022-01-31 02:27:27,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670807000] [2022-01-31 02:27:27,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:27,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 02:27:27,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:27,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 02:27:27,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 02:27:27,629 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 57 states, 57 states have (on average 1.5789473684210527) internal successors, (90), 56 states have internal predecessors, (90), 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) [2022-01-31 02:27:28,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:28,836 INFO L93 Difference]: Finished difference Result 303 states and 330 transitions. [2022-01-31 02:27:28,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 02:27:28,837 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.5789473684210527) internal successors, (90), 56 states have internal predecessors, (90), 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 213 [2022-01-31 02:27:28,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:28,838 INFO L225 Difference]: With dead ends: 303 [2022-01-31 02:27:28,838 INFO L226 Difference]: Without dead ends: 217 [2022-01-31 02:27:28,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 476 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2851 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2406, Invalid=9584, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 02:27:28,840 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:28,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 83 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:27:28,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-01-31 02:27:28,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-01-31 02:27:28,860 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) [2022-01-31 02:27:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2022-01-31 02:27:28,861 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 213 [2022-01-31 02:27:28,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:28,861 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2022-01-31 02:27:28,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.5789473684210527) internal successors, (90), 56 states have internal predecessors, (90), 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) [2022-01-31 02:27:28,862 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2022-01-31 02:27:28,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-31 02:27:28,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:28,863 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:28,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:29,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-01-31 02:27:29,087 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:29,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:29,087 INFO L85 PathProgramCache]: Analyzing trace with hash 418520172, now seen corresponding path program 50 times [2022-01-31 02:27:29,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:29,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266938932] [2022-01-31 02:27:29,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:29,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 02:27:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 02:27:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 02:27:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 02:27:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:27:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:27:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:27:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:27:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:27:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:27:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:27:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:27:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:27:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:27:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:27:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:27:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:27:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:27:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:27:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:27:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:27:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:27:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:27:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:27:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:27:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-01-31 02:27:29,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:29,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266938932] [2022-01-31 02:27:29,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266938932] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:29,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66381812] [2022-01-31 02:27:29,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:27:29,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:29,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:29,472 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) [2022-01-31 02:27:29,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-31 02:27:29,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:27:29,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:29,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 55 conjunts are in the unsatisfiable core [2022-01-31 02:27:29,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-01-31 02:27:29,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-01-31 02:27:30,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66381812] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:30,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:30,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 35 [2022-01-31 02:27:30,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82436164] [2022-01-31 02:27:30,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:30,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-31 02:27:30,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:30,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-31 02:27:30,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=769, Unknown=0, NotChecked=0, Total=1190 [2022-01-31 02:27:30,245 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) [2022-01-31 02:27:30,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:30,807 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2022-01-31 02:27:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-31 02:27:30,808 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 [2022-01-31 02:27:30,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:30,809 INFO L225 Difference]: With dead ends: 230 [2022-01-31 02:27:30,809 INFO L226 Difference]: Without dead ends: 228 [2022-01-31 02:27:30,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 501 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1255, Invalid=3035, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 02:27:30,810 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 90 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:30,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 50 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 02:27:30,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-01-31 02:27:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2022-01-31 02:27:30,831 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) [2022-01-31 02:27:30,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2022-01-31 02:27:30,831 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 214 [2022-01-31 02:27:30,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:30,832 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2022-01-31 02:27:30,832 INFO L471 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) [2022-01-31 02:27:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2022-01-31 02:27:30,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-31 02:27:30,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:30,833 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:30,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-01-31 02:27:31,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:31,046 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:31,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:31,046 INFO L85 PathProgramCache]: Analyzing trace with hash -941188601, now seen corresponding path program 51 times [2022-01-31 02:27:31,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:31,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398164745] [2022-01-31 02:27:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:31,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-31 02:27:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 02:27:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 02:27:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 02:27:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:27:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:27:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:27:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:27:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:27:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:27:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:27:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:27:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:27:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:27:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:27:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:27:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:27:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:27:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:27:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:27:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:27:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:27:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:27:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:27:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:27:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:27:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-01-31 02:27:31,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:31,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398164745] [2022-01-31 02:27:31,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398164745] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:31,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260698833] [2022-01-31 02:27:31,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:27:31,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:31,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:31,884 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) [2022-01-31 02:27:31,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-31 02:27:31,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2022-01-31 02:27:31,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:31,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-31 02:27:31,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-01-31 02:27:32,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-01-31 02:27:32,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260698833] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:32,734 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:32,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 59 [2022-01-31 02:27:32,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913298147] [2022-01-31 02:27:32,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:32,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 02:27:32,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 02:27:32,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=844, Invalid=2578, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 02:27:32,736 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 59 states, 59 states have (on average 1.576271186440678) internal successors, (93), 58 states have internal predecessors, (93), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 02:27:34,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:34,007 INFO L93 Difference]: Finished difference Result 314 states and 342 transitions. [2022-01-31 02:27:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 02:27:34,008 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.576271186440678) internal successors, (93), 58 states have internal predecessors, (93), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 221 [2022-01-31 02:27:34,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:34,009 INFO L225 Difference]: With dead ends: 314 [2022-01-31 02:27:34,009 INFO L226 Difference]: Without dead ends: 225 [2022-01-31 02:27:34,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 494 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3069 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2579, Invalid=10303, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 02:27:34,010 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:34,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 74 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:27:34,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-31 02:27:34,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-01-31 02:27:34,032 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) [2022-01-31 02:27:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2022-01-31 02:27:34,033 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 221 [2022-01-31 02:27:34,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:34,033 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2022-01-31 02:27:34,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.576271186440678) internal successors, (93), 58 states have internal predecessors, (93), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 02:27:34,033 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2022-01-31 02:27:34,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-01-31 02:27:34,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:34,035 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:34,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:34,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-01-31 02:27:34,247 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:34,248 INFO L85 PathProgramCache]: Analyzing trace with hash -338373267, now seen corresponding path program 52 times [2022-01-31 02:27:34,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:34,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292171531] [2022-01-31 02:27:34,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:34,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 02:27:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 02:27:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 02:27:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 02:27:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:27:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:27:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:27:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:27:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:27:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:27:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:27:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:27:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:27:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:27:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:27:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:27:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:27:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:27:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:27:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:27:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:27:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:27:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:27:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:27:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:27:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:27:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-01-31 02:27:34,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:34,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292171531] [2022-01-31 02:27:34,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292171531] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:34,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752388675] [2022-01-31 02:27:34,660 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:27:34,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:34,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:34,662 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) [2022-01-31 02:27:34,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-31 02:27:34,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:27:34,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:34,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-31 02:27:34,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-01-31 02:27:35,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-01-31 02:27:35,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752388675] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:35,402 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:35,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 36 [2022-01-31 02:27:35,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529656986] [2022-01-31 02:27:35,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:35,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-31 02:27:35,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:35,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-31 02:27:35,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=810, Unknown=0, NotChecked=0, Total=1260 [2022-01-31 02:27:35,403 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) [2022-01-31 02:27:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:35,987 INFO L93 Difference]: Finished difference Result 238 states and 240 transitions. [2022-01-31 02:27:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-31 02:27:35,987 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 [2022-01-31 02:27:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:35,988 INFO L225 Difference]: With dead ends: 238 [2022-01-31 02:27:35,988 INFO L226 Difference]: Without dead ends: 236 [2022-01-31 02:27:35,988 INFO L932 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 [2022-01-31 02:27:35,988 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 81 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:35,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 60 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-01-31 02:27:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2022-01-31 02:27:36,012 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) [2022-01-31 02:27:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2022-01-31 02:27:36,012 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 222 [2022-01-31 02:27:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:36,012 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2022-01-31 02:27:36,013 INFO L471 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) [2022-01-31 02:27:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2022-01-31 02:27:36,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-01-31 02:27:36,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:36,014 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:36,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-01-31 02:27:36,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:36,227 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1947397606, now seen corresponding path program 53 times [2022-01-31 02:27:36,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:36,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474485392] [2022-01-31 02:27:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:36,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-31 02:27:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 02:27:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 02:27:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 02:27:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:27:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:27:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:27:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:27:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:27:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:27:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:27:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:27:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:27:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:27:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:27:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:27:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:27:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:27:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:27:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:27:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:27:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:27:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:27:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:27:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:27:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:27:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:27:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-01-31 02:27:37,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:37,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474485392] [2022-01-31 02:27:37,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474485392] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:37,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031841834] [2022-01-31 02:27:37,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:27:37,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:37,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:37,124 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) [2022-01-31 02:27:37,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-31 02:27:37,218 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2022-01-31 02:27:37,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:37,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-31 02:27:37,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-01-31 02:27:37,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-01-31 02:27:37,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031841834] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:37,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:37,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 61 [2022-01-31 02:27:37,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046122485] [2022-01-31 02:27:37,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:37,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 02:27:37,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 02:27:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=2757, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 02:27:37,966 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 61 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 60 states have internal predecessors, (96), 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) [2022-01-31 02:27:39,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:39,279 INFO L93 Difference]: Finished difference Result 325 states and 354 transitions. [2022-01-31 02:27:39,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 02:27:39,279 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 60 states have internal predecessors, (96), 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 229 [2022-01-31 02:27:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:39,280 INFO L225 Difference]: With dead ends: 325 [2022-01-31 02:27:39,280 INFO L226 Difference]: Without dead ends: 233 [2022-01-31 02:27:39,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 512 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3295 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2758, Invalid=11048, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 02:27:39,282 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:39,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 80 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:39,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-01-31 02:27:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2022-01-31 02:27:39,306 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) [2022-01-31 02:27:39,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2022-01-31 02:27:39,306 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 229 [2022-01-31 02:27:39,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:39,306 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2022-01-31 02:27:39,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 60 states have internal predecessors, (96), 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) [2022-01-31 02:27:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2022-01-31 02:27:39,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-31 02:27:39,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:39,316 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:39,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-01-31 02:27:39,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:39,517 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:39,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:39,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1562746036, now seen corresponding path program 54 times [2022-01-31 02:27:39,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:39,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828389181] [2022-01-31 02:27:39,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:39,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 02:27:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 02:27:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 02:27:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:27:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:27:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:27:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:27:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:27:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:27:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:27:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:27:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:27:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:27:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:27:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:27:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:27:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:27:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:27:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:27:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:27:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:27:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:27:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:27:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:27:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:27:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:27:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:27:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-01-31 02:27:39,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:39,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828389181] [2022-01-31 02:27:39,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828389181] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:39,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862237909] [2022-01-31 02:27:39,941 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:27:39,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:39,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:39,942 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) [2022-01-31 02:27:39,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-31 02:27:40,041 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2022-01-31 02:27:40,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:40,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-31 02:27:40,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-01-31 02:27:40,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-01-31 02:27:40,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862237909] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:40,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:40,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 37 [2022-01-31 02:27:40,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564745724] [2022-01-31 02:27:40,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:40,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-31 02:27:40,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-31 02:27:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 02:27:40,711 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) [2022-01-31 02:27:41,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:41,311 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2022-01-31 02:27:41,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-31 02:27:41,311 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 [2022-01-31 02:27:41,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:41,312 INFO L225 Difference]: With dead ends: 246 [2022-01-31 02:27:41,312 INFO L226 Difference]: Without dead ends: 244 [2022-01-31 02:27:41,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 539 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1432, Invalid=3398, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 02:27:41,313 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 86 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:41,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 45 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-01-31 02:27:41,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2022-01-31 02:27:41,332 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) [2022-01-31 02:27:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2022-01-31 02:27:41,333 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 230 [2022-01-31 02:27:41,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:41,333 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2022-01-31 02:27:41,333 INFO L471 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) [2022-01-31 02:27:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2022-01-31 02:27:41,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-01-31 02:27:41,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:41,334 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:41,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-01-31 02:27:41,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:41,534 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:41,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:41,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1078646567, now seen corresponding path program 55 times [2022-01-31 02:27:41,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:41,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634092546] [2022-01-31 02:27:41,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:41,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-01-31 02:27:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 02:27:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 02:27:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:27:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:27:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:27:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:27:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:27:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:27:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:27:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:27:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:27:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:27:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:27:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:27:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:27:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:27:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:27:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:27:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:27:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:27:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:27:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:27:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:27:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:27:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:27:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:27:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:27:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-01-31 02:27:42,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:42,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634092546] [2022-01-31 02:27:42,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634092546] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:42,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119317144] [2022-01-31 02:27:42,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:27:42,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:42,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:42,492 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) [2022-01-31 02:27:42,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-31 02:27:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:42,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-31 02:27:42,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-01-31 02:27:42,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-01-31 02:27:43,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119317144] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:43,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:43,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 63 [2022-01-31 02:27:43,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455500647] [2022-01-31 02:27:43,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:43,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 02:27:43,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:43,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 02:27:43,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=2942, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 02:27:43,275 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 63 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 62 states have internal predecessors, (99), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 02:27:44,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:44,647 INFO L93 Difference]: Finished difference Result 336 states and 366 transitions. [2022-01-31 02:27:44,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 02:27:44,647 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 62 states have internal predecessors, (99), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 237 [2022-01-31 02:27:44,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:44,648 INFO L225 Difference]: With dead ends: 336 [2022-01-31 02:27:44,648 INFO L226 Difference]: Without dead ends: 241 [2022-01-31 02:27:44,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 530 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3529 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2943, Invalid=11819, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 02:27:44,650 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:44,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 86 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:44,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-01-31 02:27:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-01-31 02:27:44,674 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) [2022-01-31 02:27:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2022-01-31 02:27:44,675 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 237 [2022-01-31 02:27:44,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:44,675 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2022-01-31 02:27:44,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 62 states have internal predecessors, (99), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-31 02:27:44,675 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2022-01-31 02:27:44,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-01-31 02:27:44,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:44,676 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:44,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-01-31 02:27:44,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:44,891 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:44,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash 303138445, now seen corresponding path program 56 times [2022-01-31 02:27:44,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:44,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991245826] [2022-01-31 02:27:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:44,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 02:27:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 02:27:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 02:27:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:27:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:27:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:27:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:27:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:27:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:27:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:27:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:27:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:27:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:27:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:27:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:27:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:27:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:27:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:27:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:27:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:27:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:27:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:27:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:27:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:27:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:27:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:27:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:27:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:27:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-01-31 02:27:45,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:45,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991245826] [2022-01-31 02:27:45,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991245826] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:45,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802564640] [2022-01-31 02:27:45,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:27:45,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:45,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:45,447 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) [2022-01-31 02:27:45,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-31 02:27:45,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:27:45,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:45,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 61 conjunts are in the unsatisfiable core [2022-01-31 02:27:45,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-01-31 02:27:45,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-01-31 02:27:46,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802564640] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:46,218 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:46,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 38 [2022-01-31 02:27:46,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839379758] [2022-01-31 02:27:46,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:46,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-31 02:27:46,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:46,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-31 02:27:46,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=895, Unknown=0, NotChecked=0, Total=1406 [2022-01-31 02:27:46,219 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) [2022-01-31 02:27:46,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:46,876 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2022-01-31 02:27:46,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-31 02:27:46,877 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 [2022-01-31 02:27:46,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:46,878 INFO L225 Difference]: With dead ends: 254 [2022-01-31 02:27:46,878 INFO L226 Difference]: Without dead ends: 252 [2022-01-31 02:27:46,879 INFO L932 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 [2022-01-31 02:27:46,879 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 95 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:46,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 50 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:46,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-01-31 02:27:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 248. [2022-01-31 02:27:46,901 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) [2022-01-31 02:27:46,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2022-01-31 02:27:46,901 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 238 [2022-01-31 02:27:46,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:46,901 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2022-01-31 02:27:46,902 INFO L471 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) [2022-01-31 02:27:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2022-01-31 02:27:46,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-01-31 02:27:46,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:46,903 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:46,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:47,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-01-31 02:27:47,115 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:47,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1098729274, now seen corresponding path program 57 times [2022-01-31 02:27:47,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:47,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322705755] [2022-01-31 02:27:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:47,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-31 02:27:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 02:27:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 02:27:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:27:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:27:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:27:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:27:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:27:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:27:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:27:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:27:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:27:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:27:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:27:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:27:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:27:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:27:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:27:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:27:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:27:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:27:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:27:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:27:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:27:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:27:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:27:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:27:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:27:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:27:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-01-31 02:27:48,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:48,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322705755] [2022-01-31 02:27:48,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322705755] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:48,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242102930] [2022-01-31 02:27:48,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:27:48,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:48,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:48,216 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) [2022-01-31 02:27:48,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-31 02:27:48,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2022-01-31 02:27:48,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:48,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 62 conjunts are in the unsatisfiable core [2022-01-31 02:27:48,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-01-31 02:27:48,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-01-31 02:27:49,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242102930] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:49,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:49,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 65 [2022-01-31 02:27:49,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156322714] [2022-01-31 02:27:49,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:49,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 02:27:49,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 02:27:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 02:27:49,067 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 65 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 64 states have internal predecessors, (102), 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) [2022-01-31 02:27:50,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:50,550 INFO L93 Difference]: Finished difference Result 347 states and 378 transitions. [2022-01-31 02:27:50,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 02:27:50,550 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 64 states have internal predecessors, (102), 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 245 [2022-01-31 02:27:50,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:50,551 INFO L225 Difference]: With dead ends: 347 [2022-01-31 02:27:50,551 INFO L226 Difference]: Without dead ends: 249 [2022-01-31 02:27:50,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 548 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3771 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3134, Invalid=12616, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 02:27:50,552 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:50,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 92 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:27:50,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-01-31 02:27:50,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-01-31 02:27:50,579 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) [2022-01-31 02:27:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2022-01-31 02:27:50,579 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 245 [2022-01-31 02:27:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:50,580 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2022-01-31 02:27:50,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 64 states have internal predecessors, (102), 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) [2022-01-31 02:27:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2022-01-31 02:27:50,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-01-31 02:27:50,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:50,581 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:50,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:50,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-31 02:27:50,800 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1164878380, now seen corresponding path program 58 times [2022-01-31 02:27:50,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:50,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659819887] [2022-01-31 02:27:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:50,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 02:27:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 02:27:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 02:27:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:27:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:27:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:27:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:27:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:27:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:27:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:27:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:27:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:27:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:27:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:27:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:27:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:27:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:27:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:27:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:27:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:27:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:27:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:27:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:27:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:27:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:27:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:27:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:27:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:27:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:27:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-01-31 02:27:51,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:51,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659819887] [2022-01-31 02:27:51,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659819887] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:51,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107266085] [2022-01-31 02:27:51,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:27:51,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:51,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:51,272 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) [2022-01-31 02:27:51,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-31 02:27:51,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:27:51,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:51,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 63 conjunts are in the unsatisfiable core [2022-01-31 02:27:51,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-01-31 02:27:51,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-01-31 02:27:52,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107266085] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:52,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:52,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 39 [2022-01-31 02:27:52,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27990059] [2022-01-31 02:27:52,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:52,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-31 02:27:52,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:52,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-31 02:27:52,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=939, Unknown=0, NotChecked=0, Total=1482 [2022-01-31 02:27:52,111 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) [2022-01-31 02:27:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:52,738 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2022-01-31 02:27:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-31 02:27:52,738 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 [2022-01-31 02:27:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:52,739 INFO L225 Difference]: With dead ends: 262 [2022-01-31 02:27:52,739 INFO L226 Difference]: Without dead ends: 260 [2022-01-31 02:27:52,740 INFO L932 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 [2022-01-31 02:27:52,740 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 101 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:52,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 45 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-01-31 02:27:52,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2022-01-31 02:27:52,759 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) [2022-01-31 02:27:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2022-01-31 02:27:52,760 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 246 [2022-01-31 02:27:52,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:52,760 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2022-01-31 02:27:52,760 INFO L471 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) [2022-01-31 02:27:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2022-01-31 02:27:52,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-01-31 02:27:52,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:52,761 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:52,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:52,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-31 02:27:52,962 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:52,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:52,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1122231225, now seen corresponding path program 59 times [2022-01-31 02:27:52,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:52,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388015297] [2022-01-31 02:27:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:52,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-31 02:27:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 02:27:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 02:27:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:27:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:27:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:27:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:27:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:27:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:27:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:27:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:27:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:27:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:27:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:27:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:27:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:27:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:27:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:27:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:27:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:27:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:27:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:27:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:27:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:53,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:27:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:27:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:54,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:27:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:54,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:27:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:54,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:27:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:27:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:54,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:27:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-01-31 02:27:54,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:54,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388015297] [2022-01-31 02:27:54,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388015297] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:54,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519162480] [2022-01-31 02:27:54,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:27:54,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:54,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:54,014 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) [2022-01-31 02:27:54,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-31 02:27:54,115 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-01-31 02:27:54,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:54,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-31 02:27:54,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-01-31 02:27:54,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-01-31 02:27:54,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519162480] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:54,839 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:54,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 67 [2022-01-31 02:27:54,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586217478] [2022-01-31 02:27:54,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:54,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 02:27:54,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 02:27:54,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=3330, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 02:27:54,841 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 67 states, 67 states have (on average 1.5671641791044777) internal successors, (105), 66 states have internal predecessors, (105), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 02:27:56,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:56,554 INFO L93 Difference]: Finished difference Result 358 states and 390 transitions. [2022-01-31 02:27:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 02:27:56,555 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.5671641791044777) internal successors, (105), 66 states have internal predecessors, (105), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 253 [2022-01-31 02:27:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:56,555 INFO L225 Difference]: With dead ends: 358 [2022-01-31 02:27:56,555 INFO L226 Difference]: Without dead ends: 257 [2022-01-31 02:27:56,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 566 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4021 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3331, Invalid=13439, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 02:27:56,557 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 19 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:56,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 103 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:27:56,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-01-31 02:27:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2022-01-31 02:27:56,584 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) [2022-01-31 02:27:56,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2022-01-31 02:27:56,585 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 253 [2022-01-31 02:27:56,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:56,585 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2022-01-31 02:27:56,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.5671641791044777) internal successors, (105), 66 states have internal predecessors, (105), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-31 02:27:56,585 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2022-01-31 02:27:56,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-31 02:27:56,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:56,586 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:56,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:56,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:56,799 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:56,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2058141779, now seen corresponding path program 60 times [2022-01-31 02:27:56,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:56,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740935425] [2022-01-31 02:27:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:56,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:27:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 02:27:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 02:27:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 02:27:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:27:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:27:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:27:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:27:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:27:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:27:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:27:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:27:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:27:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:27:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:27:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:27:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:27:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:27:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:27:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:27:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:27:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:27:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:27:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:27:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:27:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:27:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:27:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:27:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:27:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:27:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:27:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:27:57,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-01-31 02:27:57,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:27:57,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740935425] [2022-01-31 02:27:57,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740935425] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:27:57,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182536945] [2022-01-31 02:27:57,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:27:57,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:57,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:27:57,306 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) [2022-01-31 02:27:57,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-31 02:27:57,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2022-01-31 02:27:57,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:27:57,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-31 02:27:57,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:27:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-01-31 02:27:57,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:27:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-01-31 02:27:58,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182536945] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:27:58,143 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:27:58,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 40 [2022-01-31 02:27:58,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253685700] [2022-01-31 02:27:58,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:27:58,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-31 02:27:58,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:27:58,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-31 02:27:58,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=984, Unknown=0, NotChecked=0, Total=1560 [2022-01-31 02:27:58,145 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) [2022-01-31 02:27:58,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:27:58,807 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2022-01-31 02:27:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-31 02:27:58,807 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 [2022-01-31 02:27:58,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:27:58,808 INFO L225 Difference]: With dead ends: 270 [2022-01-31 02:27:58,808 INFO L226 Difference]: Without dead ends: 268 [2022-01-31 02:27:58,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 596 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1720, Invalid=3980, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 02:27:58,809 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 94 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:27:58,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 40 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:27:58,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-01-31 02:27:58,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2022-01-31 02:27:58,837 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) [2022-01-31 02:27:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2022-01-31 02:27:58,838 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 254 [2022-01-31 02:27:58,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:27:58,838 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2022-01-31 02:27:58,838 INFO L471 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) [2022-01-31 02:27:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2022-01-31 02:27:58,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-01-31 02:27:58,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:27:58,840 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:27:58,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-31 02:27:59,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:27:59,064 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:27:59,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:27:59,064 INFO L85 PathProgramCache]: Analyzing trace with hash 95714214, now seen corresponding path program 61 times [2022-01-31 02:27:59,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:27:59,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304797438] [2022-01-31 02:27:59,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:27:59,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:27:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-01-31 02:28:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 02:28:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 02:28:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:28:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:28:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:28:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:28:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:28:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:28:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:28:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:28:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:28:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:28:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:28:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:28:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:28:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:28:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:28:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:28:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:28:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:28:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:28:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:28:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:28:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:28:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:28:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:28:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:28:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:28:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:28:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:28:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-01-31 02:28:00,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:00,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304797438] [2022-01-31 02:28:00,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304797438] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:00,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350574168] [2022-01-31 02:28:00,190 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:28:00,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:00,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:00,196 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) [2022-01-31 02:28:00,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-31 02:28:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:00,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-31 02:28:00,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-01-31 02:28:00,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-01-31 02:28:01,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350574168] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:01,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:01,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 69 [2022-01-31 02:28:01,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131682090] [2022-01-31 02:28:01,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:01,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-31 02:28:01,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:01,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-31 02:28:01,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 02:28:01,020 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 69 states, 69 states have (on average 1.565217391304348) internal successors, (108), 68 states have internal predecessors, (108), 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) [2022-01-31 02:28:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:02,747 INFO L93 Difference]: Finished difference Result 369 states and 402 transitions. [2022-01-31 02:28:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 02:28:02,748 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.565217391304348) internal successors, (108), 68 states have internal predecessors, (108), 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 261 [2022-01-31 02:28:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:02,748 INFO L225 Difference]: With dead ends: 369 [2022-01-31 02:28:02,748 INFO L226 Difference]: Without dead ends: 265 [2022-01-31 02:28:02,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 584 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4279 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3534, Invalid=14288, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 02:28:02,750 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 19 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:02,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 99 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:28:02,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-01-31 02:28:02,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-01-31 02:28:02,772 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) [2022-01-31 02:28:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2022-01-31 02:28:02,772 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 261 [2022-01-31 02:28:02,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:02,772 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2022-01-31 02:28:02,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.565217391304348) internal successors, (108), 68 states have internal predecessors, (108), 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) [2022-01-31 02:28:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2022-01-31 02:28:02,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-01-31 02:28:02,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:02,774 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:02,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-01-31 02:28:02,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:02,981 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:02,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:02,981 INFO L85 PathProgramCache]: Analyzing trace with hash 358406412, now seen corresponding path program 62 times [2022-01-31 02:28:02,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:02,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253653257] [2022-01-31 02:28:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:02,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 02:28:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 02:28:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 02:28:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:28:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:28:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:28:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:28:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:28:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:28:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:28:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:28:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:28:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:28:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:28:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:28:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:28:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:28:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:28:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:28:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:28:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:28:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:28:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:28:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:28:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:28:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:28:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:28:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:28:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:28:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:28:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:28:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-01-31 02:28:03,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:03,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253653257] [2022-01-31 02:28:03,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253653257] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:03,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069064137] [2022-01-31 02:28:03,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:28:03,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:03,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:03,606 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) [2022-01-31 02:28:03,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-31 02:28:03,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:28:03,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:03,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 67 conjunts are in the unsatisfiable core [2022-01-31 02:28:03,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-01-31 02:28:04,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-01-31 02:28:04,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069064137] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:04,467 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:04,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 41 [2022-01-31 02:28:04,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901163471] [2022-01-31 02:28:04,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:04,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-31 02:28:04,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:04,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-31 02:28:04,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=1030, Unknown=0, NotChecked=0, Total=1640 [2022-01-31 02:28:04,472 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) [2022-01-31 02:28:05,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:05,204 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2022-01-31 02:28:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-31 02:28:05,205 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 [2022-01-31 02:28:05,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:05,206 INFO L225 Difference]: With dead ends: 278 [2022-01-31 02:28:05,206 INFO L226 Difference]: Without dead ends: 276 [2022-01-31 02:28:05,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 615 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1822, Invalid=4184, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 02:28:05,207 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 95 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:05,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 50 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:28:05,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-01-31 02:28:05,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2022-01-31 02:28:05,232 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) [2022-01-31 02:28:05,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2022-01-31 02:28:05,233 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 262 [2022-01-31 02:28:05,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:05,233 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2022-01-31 02:28:05,233 INFO L471 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) [2022-01-31 02:28:05,233 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2022-01-31 02:28:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-01-31 02:28:05,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:05,235 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:05,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-01-31 02:28:05,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2022-01-31 02:28:05,451 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:05,452 INFO L85 PathProgramCache]: Analyzing trace with hash 703359335, now seen corresponding path program 63 times [2022-01-31 02:28:05,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:05,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508752832] [2022-01-31 02:28:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:05,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-31 02:28:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 02:28:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 02:28:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:28:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:28:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:28:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:28:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:28:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:28:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:28:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:28:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:28:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:28:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:28:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:28:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:28:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:28:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:28:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:28:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:28:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:28:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:28:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:28:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:28:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:28:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:28:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:28:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:28:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:28:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:28:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:28:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:28:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-01-31 02:28:06,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:06,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508752832] [2022-01-31 02:28:06,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508752832] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:06,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536263531] [2022-01-31 02:28:06,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:28:06,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:06,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:06,812 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) [2022-01-31 02:28:06,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-31 02:28:06,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2022-01-31 02:28:06,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:06,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 68 conjunts are in the unsatisfiable core [2022-01-31 02:28:06,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-01-31 02:28:07,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-01-31 02:28:07,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536263531] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:07,766 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:07,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 71 [2022-01-31 02:28:07,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577407992] [2022-01-31 02:28:07,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:07,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 02:28:07,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:07,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 02:28:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=3742, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 02:28:07,767 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 71 states, 71 states have (on average 1.5633802816901408) internal successors, (111), 70 states have internal predecessors, (111), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 02:28:09,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:09,502 INFO L93 Difference]: Finished difference Result 380 states and 414 transitions. [2022-01-31 02:28:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 02:28:09,502 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.5633802816901408) internal successors, (111), 70 states have internal predecessors, (111), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 269 [2022-01-31 02:28:09,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:09,503 INFO L225 Difference]: With dead ends: 380 [2022-01-31 02:28:09,503 INFO L226 Difference]: Without dead ends: 273 [2022-01-31 02:28:09,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4545 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3743, Invalid=15163, Unknown=0, NotChecked=0, Total=18906 [2022-01-31 02:28:09,505 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:09,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 95 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:28:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-31 02:28:09,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-01-31 02:28:09,534 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) [2022-01-31 02:28:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2022-01-31 02:28:09,535 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 269 [2022-01-31 02:28:09,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:09,536 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2022-01-31 02:28:09,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.5633802816901408) internal successors, (111), 70 states have internal predecessors, (111), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-31 02:28:09,536 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2022-01-31 02:28:09,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-01-31 02:28:09,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:09,537 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:09,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-31 02:28:09,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:09,752 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:09,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:09,752 INFO L85 PathProgramCache]: Analyzing trace with hash 19661005, now seen corresponding path program 64 times [2022-01-31 02:28:09,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:09,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512609552] [2022-01-31 02:28:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:09,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 02:28:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 02:28:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 02:28:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:28:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:28:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:28:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:28:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:28:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:28:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:28:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:28:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:28:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:28:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:28:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:28:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:28:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:28:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:28:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:28:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:28:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:28:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:28:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:28:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:28:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:28:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 02:28:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 02:28:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 02:28:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 02:28:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 02:28:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 02:28:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 02:28:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-01-31 02:28:10,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:10,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512609552] [2022-01-31 02:28:10,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512609552] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:10,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133411039] [2022-01-31 02:28:10,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:28:10,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:10,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:10,336 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) [2022-01-31 02:28:10,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-31 02:28:10,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:28:10,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:10,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 69 conjunts are in the unsatisfiable core [2022-01-31 02:28:10,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-01-31 02:28:10,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-01-31 02:28:11,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133411039] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:11,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:11,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 42 [2022-01-31 02:28:11,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534335544] [2022-01-31 02:28:11,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:11,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-31 02:28:11,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:11,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-31 02:28:11,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=1077, Unknown=0, NotChecked=0, Total=1722 [2022-01-31 02:28:11,264 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) [2022-01-31 02:28:11,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:11,998 INFO L93 Difference]: Finished difference Result 286 states and 288 transitions. [2022-01-31 02:28:11,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-31 02:28:11,999 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 [2022-01-31 02:28:11,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:11,999 INFO L225 Difference]: With dead ends: 286 [2022-01-31 02:28:12,000 INFO L226 Difference]: Without dead ends: 284 [2022-01-31 02:28:12,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 634 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1927, Invalid=4393, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 02:28:12,000 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 101 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:12,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 45 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:28:12,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-01-31 02:28:12,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 280. [2022-01-31 02:28:12,029 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) [2022-01-31 02:28:12,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2022-01-31 02:28:12,030 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 270 [2022-01-31 02:28:12,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:12,030 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2022-01-31 02:28:12,031 INFO L471 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) [2022-01-31 02:28:12,031 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2022-01-31 02:28:12,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-01-31 02:28:12,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:12,032 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:12,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-31 02:28:12,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-01-31 02:28:12,255 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:12,255 INFO L85 PathProgramCache]: Analyzing trace with hash -975817082, now seen corresponding path program 65 times [2022-01-31 02:28:12,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:12,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438405718] [2022-01-31 02:28:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:12,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-31 02:28:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 02:28:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 02:28:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:28:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:28:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:28:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:28:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:28:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:28:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:28:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:28:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:28:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:28:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:28:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:28:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:28:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:28:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:28:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:28:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:28:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:28:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:28:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:28:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:28:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:28:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 02:28:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 02:28:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 02:28:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 02:28:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 02:28:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 02:28:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 02:28:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 02:28:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-01-31 02:28:13,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:13,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438405718] [2022-01-31 02:28:13,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438405718] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:13,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083728994] [2022-01-31 02:28:13,504 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:28:13,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:13,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:13,508 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) [2022-01-31 02:28:13,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-31 02:28:13,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2022-01-31 02:28:13,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:13,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 70 conjunts are in the unsatisfiable core [2022-01-31 02:28:13,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-01-31 02:28:14,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-01-31 02:28:14,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083728994] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:14,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:14,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 73 [2022-01-31 02:28:14,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562074095] [2022-01-31 02:28:14,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:14,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-31 02:28:14,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:14,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-31 02:28:14,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1299, Invalid=3957, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 02:28:14,432 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 73 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 72 states have internal predecessors, (114), 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) [2022-01-31 02:28:16,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:16,191 INFO L93 Difference]: Finished difference Result 391 states and 426 transitions. [2022-01-31 02:28:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 02:28:16,192 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 72 states have internal predecessors, (114), 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 277 [2022-01-31 02:28:16,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:16,192 INFO L225 Difference]: With dead ends: 391 [2022-01-31 02:28:16,193 INFO L226 Difference]: Without dead ends: 281 [2022-01-31 02:28:16,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 620 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4819 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3958, Invalid=16064, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 02:28:16,195 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:16,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 91 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:28:16,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-01-31 02:28:16,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2022-01-31 02:28:16,228 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) [2022-01-31 02:28:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2022-01-31 02:28:16,229 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 277 [2022-01-31 02:28:16,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:16,229 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2022-01-31 02:28:16,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 72 states have internal predecessors, (114), 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) [2022-01-31 02:28:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2022-01-31 02:28:16,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-01-31 02:28:16,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:16,231 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:16,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-31 02:28:16,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-01-31 02:28:16,455 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:16,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:16,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1590888428, now seen corresponding path program 66 times [2022-01-31 02:28:16,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:16,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733122303] [2022-01-31 02:28:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:16,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 02:28:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 02:28:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 02:28:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:28:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:28:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:28:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:28:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:28:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:28:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:28:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:28:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:28:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:28:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:28:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:28:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:28:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:28:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:28:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:28:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:28:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:28:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:28:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:28:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:28:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:28:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:28:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 02:28:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 02:28:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 02:28:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 02:28:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 02:28:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 02:28:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 02:28:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-01-31 02:28:17,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:17,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733122303] [2022-01-31 02:28:17,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733122303] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:17,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551154245] [2022-01-31 02:28:17,056 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:28:17,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:17,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:17,060 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) [2022-01-31 02:28:17,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-31 02:28:17,218 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2022-01-31 02:28:17,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:17,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 71 conjunts are in the unsatisfiable core [2022-01-31 02:28:17,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-01-31 02:28:17,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-01-31 02:28:18,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551154245] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:18,006 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:18,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 43 [2022-01-31 02:28:18,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945394802] [2022-01-31 02:28:18,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:18,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-31 02:28:18,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:18,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-31 02:28:18,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=1125, Unknown=0, NotChecked=0, Total=1806 [2022-01-31 02:28:18,007 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) [2022-01-31 02:28:18,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:18,744 INFO L93 Difference]: Finished difference Result 294 states and 296 transitions. [2022-01-31 02:28:18,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 02:28:18,744 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 [2022-01-31 02:28:18,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:18,745 INFO L225 Difference]: With dead ends: 294 [2022-01-31 02:28:18,745 INFO L226 Difference]: Without dead ends: 292 [2022-01-31 02:28:18,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 653 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2035, Invalid=4607, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 02:28:18,746 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 98 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:18,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 50 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 02:28:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-01-31 02:28:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 288. [2022-01-31 02:28:18,774 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) [2022-01-31 02:28:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2022-01-31 02:28:18,775 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 278 [2022-01-31 02:28:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:18,775 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2022-01-31 02:28:18,775 INFO L471 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) [2022-01-31 02:28:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2022-01-31 02:28:18,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-01-31 02:28:18,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:18,776 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:18,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-31 02:28:18,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-01-31 02:28:18,977 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:18,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:18,977 INFO L85 PathProgramCache]: Analyzing trace with hash -892486009, now seen corresponding path program 67 times [2022-01-31 02:28:18,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:18,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069840258] [2022-01-31 02:28:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:18,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-01-31 02:28:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 02:28:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 02:28:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:28:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:28:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:28:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:28:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:28:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:28:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:28:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:28:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:28:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:28:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:28:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:28:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:28:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:28:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:28:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:28:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:28:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:28:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:28:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:28:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:28:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:28:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:28:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 02:28:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 02:28:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 02:28:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 02:28:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 02:28:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 02:28:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 02:28:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 02:28:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-01-31 02:28:20,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:20,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069840258] [2022-01-31 02:28:20,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069840258] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:20,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629090544] [2022-01-31 02:28:20,311 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:28:20,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:20,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:20,312 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) [2022-01-31 02:28:20,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-31 02:28:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:20,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-31 02:28:20,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-01-31 02:28:20,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-01-31 02:28:21,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629090544] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:21,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:21,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73, 73] total 75 [2022-01-31 02:28:21,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560684956] [2022-01-31 02:28:21,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:21,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 02:28:21,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:21,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 02:28:21,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1372, Invalid=4178, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 02:28:21,192 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand has 75 states, 75 states have (on average 1.56) internal successors, (117), 74 states have internal predecessors, (117), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 02:28:23,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:23,536 INFO L93 Difference]: Finished difference Result 402 states and 438 transitions. [2022-01-31 02:28:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 02:28:23,537 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.56) internal successors, (117), 74 states have internal predecessors, (117), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 285 [2022-01-31 02:28:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:23,538 INFO L225 Difference]: With dead ends: 402 [2022-01-31 02:28:23,538 INFO L226 Difference]: Without dead ends: 289 [2022-01-31 02:28:23,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 638 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5101 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4179, Invalid=16991, Unknown=0, NotChecked=0, Total=21170 [2022-01-31 02:28:23,539 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 19 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:23,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 117 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 02:28:23,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-01-31 02:28:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-01-31 02:28:23,561 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) [2022-01-31 02:28:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2022-01-31 02:28:23,561 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 285 [2022-01-31 02:28:23,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:23,561 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2022-01-31 02:28:23,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.56) internal successors, (117), 74 states have internal predecessors, (117), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 02:28:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2022-01-31 02:28:23,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-01-31 02:28:23,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:23,563 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:23,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-01-31 02:28:23,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-01-31 02:28:23,783 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1716663827, now seen corresponding path program 68 times [2022-01-31 02:28:23,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:23,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113993422] [2022-01-31 02:28:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:23,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 02:28:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 02:28:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:28:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:28:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:28:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:28:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:28:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:28:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:28:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:28:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:28:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:28:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:28:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:28:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:28:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:28:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:28:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:28:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:28:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:28:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:28:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:28:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:28:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:28:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:28:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:28:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:28:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 02:28:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 02:28:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 02:28:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 02:28:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 02:28:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 02:28:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 02:28:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-01-31 02:28:24,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:24,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113993422] [2022-01-31 02:28:24,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113993422] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:24,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550933361] [2022-01-31 02:28:24,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:28:24,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:24,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:24,380 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) [2022-01-31 02:28:24,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-31 02:28:24,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:28:24,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:24,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 73 conjunts are in the unsatisfiable core [2022-01-31 02:28:24,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-01-31 02:28:24,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-01-31 02:28:25,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550933361] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:25,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:25,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 44 [2022-01-31 02:28:25,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778844863] [2022-01-31 02:28:25,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:25,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-31 02:28:25,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:25,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-31 02:28:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=718, Invalid=1174, Unknown=0, NotChecked=0, Total=1892 [2022-01-31 02:28:25,283 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) [2022-01-31 02:28:26,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:26,073 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2022-01-31 02:28:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-31 02:28:26,073 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 [2022-01-31 02:28:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:26,074 INFO L225 Difference]: With dead ends: 302 [2022-01-31 02:28:26,074 INFO L226 Difference]: Without dead ends: 300 [2022-01-31 02:28:26,075 INFO L932 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 [2022-01-31 02:28:26,075 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 99 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:26,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 60 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:28:26,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-31 02:28:26,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 296. [2022-01-31 02:28:26,110 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) [2022-01-31 02:28:26,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2022-01-31 02:28:26,110 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 286 [2022-01-31 02:28:26,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:26,111 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2022-01-31 02:28:26,111 INFO L471 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) [2022-01-31 02:28:26,111 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2022-01-31 02:28:26,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-01-31 02:28:26,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:26,113 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:26,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-31 02:28:26,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:26,326 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:26,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1835669146, now seen corresponding path program 69 times [2022-01-31 02:28:26,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:26,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066720991] [2022-01-31 02:28:26,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:26,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-31 02:28:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 02:28:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:28:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:28:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:28:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:28:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:28:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:28:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:28:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:28:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:28:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:28:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:28:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:28:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:28:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:28:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:28:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:28:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:28:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:28:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:28:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:28:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:28:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:28:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:28:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:28:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:28:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 02:28:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 02:28:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 02:28:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 02:28:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 02:28:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 02:28:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 02:28:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 02:28:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-01-31 02:28:27,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:27,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066720991] [2022-01-31 02:28:27,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066720991] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:27,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395261046] [2022-01-31 02:28:27,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:28:27,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:27,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:27,720 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) [2022-01-31 02:28:27,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-31 02:28:27,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2022-01-31 02:28:27,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:27,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 74 conjunts are in the unsatisfiable core [2022-01-31 02:28:27,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-01-31 02:28:28,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-01-31 02:28:28,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395261046] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:28,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:28,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 75] total 77 [2022-01-31 02:28:28,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604566099] [2022-01-31 02:28:28,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:28,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 02:28:28,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:28,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 02:28:28,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1447, Invalid=4405, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 02:28:28,689 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 77 states, 77 states have (on average 1.5584415584415585) internal successors, (120), 76 states have internal predecessors, (120), 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) [2022-01-31 02:28:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:30,634 INFO L93 Difference]: Finished difference Result 413 states and 450 transitions. [2022-01-31 02:28:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 02:28:30,634 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.5584415584415585) internal successors, (120), 76 states have internal predecessors, (120), 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 293 [2022-01-31 02:28:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:30,635 INFO L225 Difference]: With dead ends: 413 [2022-01-31 02:28:30,636 INFO L226 Difference]: Without dead ends: 297 [2022-01-31 02:28:30,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 656 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5391 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4406, Invalid=17944, Unknown=0, NotChecked=0, Total=22350 [2022-01-31 02:28:30,638 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:30,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 98 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:28:30,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-01-31 02:28:30,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-01-31 02:28:30,683 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) [2022-01-31 02:28:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2022-01-31 02:28:30,683 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 293 [2022-01-31 02:28:30,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:30,683 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2022-01-31 02:28:30,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.5584415584415585) internal successors, (120), 76 states have internal predecessors, (120), 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) [2022-01-31 02:28:30,684 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2022-01-31 02:28:30,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-01-31 02:28:30,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:30,685 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:30,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-31 02:28:30,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:30,891 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:30,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:30,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2055262516, now seen corresponding path program 70 times [2022-01-31 02:28:30,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:30,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780881941] [2022-01-31 02:28:30,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:30,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 02:28:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 02:28:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:28:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:28:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:28:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:28:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:28:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:28:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:28:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:28:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:28:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:28:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:28:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:28:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:28:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:28:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:28:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:28:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:28:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:28:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:28:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:28:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:28:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:28:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:28:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:28:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:28:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:28:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 02:28:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 02:28:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 02:28:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 02:28:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 02:28:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 02:28:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 02:28:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-01-31 02:28:31,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:31,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780881941] [2022-01-31 02:28:31,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780881941] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:31,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718162439] [2022-01-31 02:28:31,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:28:31,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:31,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:31,536 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) [2022-01-31 02:28:31,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-31 02:28:31,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:28:31,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:31,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-31 02:28:31,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-01-31 02:28:32,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-01-31 02:28:32,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718162439] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:32,501 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:32,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 45 [2022-01-31 02:28:32,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338144339] [2022-01-31 02:28:32,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:32,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-31 02:28:32,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:32,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-31 02:28:32,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=756, Invalid=1224, Unknown=0, NotChecked=0, Total=1980 [2022-01-31 02:28:32,502 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) [2022-01-31 02:28:33,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:33,296 INFO L93 Difference]: Finished difference Result 310 states and 312 transitions. [2022-01-31 02:28:33,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-31 02:28:33,297 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 [2022-01-31 02:28:33,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:33,298 INFO L225 Difference]: With dead ends: 310 [2022-01-31 02:28:33,298 INFO L226 Difference]: Without dead ends: 308 [2022-01-31 02:28:33,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 691 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2260, Invalid=5050, Unknown=0, NotChecked=0, Total=7310 [2022-01-31 02:28:33,299 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 104 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:33,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 40 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:28:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-31 02:28:33,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2022-01-31 02:28:33,321 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) [2022-01-31 02:28:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2022-01-31 02:28:33,322 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 294 [2022-01-31 02:28:33,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:33,322 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2022-01-31 02:28:33,322 INFO L471 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) [2022-01-31 02:28:33,322 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2022-01-31 02:28:33,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-01-31 02:28:33,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:33,323 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:33,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-01-31 02:28:33,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:33,524 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:33,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1548884903, now seen corresponding path program 71 times [2022-01-31 02:28:33,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:33,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077625227] [2022-01-31 02:28:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:33,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-31 02:28:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 02:28:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:28:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:28:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:28:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:28:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:28:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:28:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:28:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:28:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:28:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:28:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:28:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:28:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:28:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:28:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:28:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:28:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:28:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:28:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:28:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:28:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:28:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:28:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:28:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:28:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:28:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:28:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 02:28:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 02:28:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 02:28:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 02:28:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 02:28:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 02:28:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 02:28:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 02:28:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:34,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-01-31 02:28:34,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:34,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077625227] [2022-01-31 02:28:34,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077625227] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:34,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990057246] [2022-01-31 02:28:34,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:28:34,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:34,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:34,975 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) [2022-01-31 02:28:34,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-31 02:28:35,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2022-01-31 02:28:35,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:35,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-31 02:28:35,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-01-31 02:28:35,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-01-31 02:28:35,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990057246] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:35,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:35,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 79 [2022-01-31 02:28:35,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485367328] [2022-01-31 02:28:35,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:35,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-31 02:28:35,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:35,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-31 02:28:35,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1524, Invalid=4638, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 02:28:35,991 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 79 states, 79 states have (on average 1.5569620253164558) internal successors, (123), 78 states have internal predecessors, (123), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 02:28:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:38,132 INFO L93 Difference]: Finished difference Result 424 states and 462 transitions. [2022-01-31 02:28:38,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 02:28:38,133 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.5569620253164558) internal successors, (123), 78 states have internal predecessors, (123), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 301 [2022-01-31 02:28:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:38,134 INFO L225 Difference]: With dead ends: 424 [2022-01-31 02:28:38,134 INFO L226 Difference]: Without dead ends: 305 [2022-01-31 02:28:38,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 674 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5689 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4639, Invalid=18923, Unknown=0, NotChecked=0, Total=23562 [2022-01-31 02:28:38,137 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 19 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:38,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 104 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:28:38,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-01-31 02:28:38,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-01-31 02:28:38,174 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) [2022-01-31 02:28:38,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2022-01-31 02:28:38,174 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 301 [2022-01-31 02:28:38,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:38,175 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2022-01-31 02:28:38,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.5569620253164558) internal successors, (123), 78 states have internal predecessors, (123), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-31 02:28:38,175 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2022-01-31 02:28:38,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-01-31 02:28:38,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:38,176 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:38,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-01-31 02:28:38,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-01-31 02:28:38,391 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:38,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:38,392 INFO L85 PathProgramCache]: Analyzing trace with hash -613770483, now seen corresponding path program 72 times [2022-01-31 02:28:38,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:38,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838472429] [2022-01-31 02:28:38,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:38,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 02:28:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 02:28:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:28:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:28:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:28:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:28:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:28:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:28:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:28:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:28:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:28:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:28:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:28:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:28:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:28:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:28:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:28:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:28:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:28:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:28:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:28:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:28:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:28:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:28:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:28:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:28:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:28:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:28:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:28:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 02:28:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 02:28:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 02:28:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 02:28:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 02:28:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 02:28:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 02:28:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-01-31 02:28:39,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:39,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838472429] [2022-01-31 02:28:39,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838472429] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:39,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822909713] [2022-01-31 02:28:39,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:28:39,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:39,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:39,170 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) [2022-01-31 02:28:39,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-31 02:28:39,303 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2022-01-31 02:28:39,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:39,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 77 conjunts are in the unsatisfiable core [2022-01-31 02:28:39,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-01-31 02:28:39,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-01-31 02:28:40,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822909713] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:40,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:40,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 42] total 46 [2022-01-31 02:28:40,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690734866] [2022-01-31 02:28:40,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:40,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-31 02:28:40,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:40,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-31 02:28:40,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=795, Invalid=1275, Unknown=0, NotChecked=0, Total=2070 [2022-01-31 02:28:40,162 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) [2022-01-31 02:28:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:40,996 INFO L93 Difference]: Finished difference Result 318 states and 320 transitions. [2022-01-31 02:28:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-31 02:28:40,996 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 [2022-01-31 02:28:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:40,997 INFO L225 Difference]: With dead ends: 318 [2022-01-31 02:28:40,997 INFO L226 Difference]: Without dead ends: 316 [2022-01-31 02:28:40,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 710 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2377, Invalid=5279, Unknown=0, NotChecked=0, Total=7656 [2022-01-31 02:28:40,998 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 110 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:40,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 45 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:28:40,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-01-31 02:28:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 312. [2022-01-31 02:28:41,023 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) [2022-01-31 02:28:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2022-01-31 02:28:41,023 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 302 [2022-01-31 02:28:41,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:41,023 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2022-01-31 02:28:41,023 INFO L471 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) [2022-01-31 02:28:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2022-01-31 02:28:41,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-01-31 02:28:41,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:41,025 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:41,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-01-31 02:28:41,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:41,249 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:41,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:41,249 INFO L85 PathProgramCache]: Analyzing trace with hash -148794298, now seen corresponding path program 73 times [2022-01-31 02:28:41,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:41,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491902251] [2022-01-31 02:28:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:41,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-31 02:28:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 02:28:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:28:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:28:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:28:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:28:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:28:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:28:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:28:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:28:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:28:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:28:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:28:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:28:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:28:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:28:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:28:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:28:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:28:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:28:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:28:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:28:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:28:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:28:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:28:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:28:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:28:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:28:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:28:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 02:28:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 02:28:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 02:28:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 02:28:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 02:28:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 02:28:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 02:28:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 02:28:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-01-31 02:28:42,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:42,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491902251] [2022-01-31 02:28:42,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491902251] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:42,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080719453] [2022-01-31 02:28:42,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:28:42,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:42,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:42,779 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) [2022-01-31 02:28:42,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-31 02:28:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:42,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 78 conjunts are in the unsatisfiable core [2022-01-31 02:28:42,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-01-31 02:28:43,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-01-31 02:28:43,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080719453] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:43,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:43,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79, 79] total 81 [2022-01-31 02:28:43,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630099877] [2022-01-31 02:28:43,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:43,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-31 02:28:43,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:43,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-31 02:28:43,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=4877, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 02:28:43,747 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 81 states, 81 states have (on average 1.5555555555555556) internal successors, (126), 80 states have internal predecessors, (126), 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) [2022-01-31 02:28:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:45,950 INFO L93 Difference]: Finished difference Result 435 states and 474 transitions. [2022-01-31 02:28:45,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 02:28:45,951 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.5555555555555556) internal successors, (126), 80 states have internal predecessors, (126), 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 309 [2022-01-31 02:28:45,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:45,952 INFO L225 Difference]: With dead ends: 435 [2022-01-31 02:28:45,952 INFO L226 Difference]: Without dead ends: 313 [2022-01-31 02:28:45,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 692 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5995 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4878, Invalid=19928, Unknown=0, NotChecked=0, Total=24806 [2022-01-31 02:28:45,953 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:45,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 100 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:28:45,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-01-31 02:28:45,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-01-31 02:28:45,978 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) [2022-01-31 02:28:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2022-01-31 02:28:45,979 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 309 [2022-01-31 02:28:45,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:45,979 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2022-01-31 02:28:45,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.5555555555555556) internal successors, (126), 80 states have internal predecessors, (126), 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) [2022-01-31 02:28:45,979 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2022-01-31 02:28:45,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-01-31 02:28:45,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:45,981 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:46,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-01-31 02:28:46,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:46,195 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:46,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:46,196 INFO L85 PathProgramCache]: Analyzing trace with hash -460370516, now seen corresponding path program 74 times [2022-01-31 02:28:46,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:46,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993533686] [2022-01-31 02:28:46,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:46,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 02:28:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 02:28:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:28:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:28:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:28:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:28:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:28:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:28:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:28:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:28:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:28:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:28:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:28:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:28:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:28:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:28:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:28:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:28:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:28:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:28:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:28:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:28:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:28:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:28:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:28:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:28:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:28:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:28:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:28:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:28:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 02:28:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 02:28:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 02:28:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 02:28:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 02:28:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 02:28:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 02:28:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-01-31 02:28:46,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:46,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993533686] [2022-01-31 02:28:46,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993533686] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:46,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128495756] [2022-01-31 02:28:46,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:28:46,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:46,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:46,896 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) [2022-01-31 02:28:46,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-31 02:28:46,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:28:46,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:47,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 79 conjunts are in the unsatisfiable core [2022-01-31 02:28:47,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-01-31 02:28:47,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-01-31 02:28:47,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128495756] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:47,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:47,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 47 [2022-01-31 02:28:47,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884136421] [2022-01-31 02:28:47,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:47,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-31 02:28:47,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:47,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-31 02:28:47,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=835, Invalid=1327, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 02:28:47,879 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) [2022-01-31 02:28:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:48,737 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2022-01-31 02:28:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-31 02:28:48,737 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 [2022-01-31 02:28:48,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:48,738 INFO L225 Difference]: With dead ends: 326 [2022-01-31 02:28:48,738 INFO L226 Difference]: Without dead ends: 324 [2022-01-31 02:28:48,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 729 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2497, Invalid=5513, Unknown=0, NotChecked=0, Total=8010 [2022-01-31 02:28:48,739 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 106 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:48,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 40 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:28:48,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-01-31 02:28:48,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 320. [2022-01-31 02:28:48,765 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) [2022-01-31 02:28:48,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2022-01-31 02:28:48,765 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 310 [2022-01-31 02:28:48,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:48,766 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2022-01-31 02:28:48,766 INFO L471 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) [2022-01-31 02:28:48,766 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2022-01-31 02:28:48,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-01-31 02:28:48,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:48,767 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:48,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-01-31 02:28:48,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-01-31 02:28:48,987 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:48,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:48,988 INFO L85 PathProgramCache]: Analyzing trace with hash 864780487, now seen corresponding path program 75 times [2022-01-31 02:28:48,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:48,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749545866] [2022-01-31 02:28:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:48,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-31 02:28:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 02:28:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:28:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:28:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:28:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:28:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:28:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:28:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:28:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:28:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:28:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:28:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:28:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:28:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:28:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:28:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:28:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:28:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:28:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:28:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:28:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:28:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:28:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:28:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:28:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:28:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:28:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:28:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:28:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:28:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 02:28:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 02:28:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 02:28:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 02:28:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 02:28:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 02:28:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 02:28:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 02:28:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-01-31 02:28:50,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:50,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749545866] [2022-01-31 02:28:50,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749545866] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:50,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34201828] [2022-01-31 02:28:50,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:28:50,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:50,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:50,579 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) [2022-01-31 02:28:50,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-31 02:28:50,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2022-01-31 02:28:50,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:50,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-31 02:28:50,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-01-31 02:28:51,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-01-31 02:28:51,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34201828] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:51,613 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:51,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81, 81] total 83 [2022-01-31 02:28:51,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750897367] [2022-01-31 02:28:51,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:51,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-31 02:28:51,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-31 02:28:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5122, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 02:28:51,614 INFO L87 Difference]: Start difference. First operand 320 states and 321 transitions. Second operand has 83 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 82 states have internal predecessors, (129), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 02:28:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:53,924 INFO L93 Difference]: Finished difference Result 446 states and 486 transitions. [2022-01-31 02:28:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 02:28:53,924 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 82 states have internal predecessors, (129), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 317 [2022-01-31 02:28:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:53,925 INFO L225 Difference]: With dead ends: 446 [2022-01-31 02:28:53,926 INFO L226 Difference]: Without dead ends: 321 [2022-01-31 02:28:53,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 710 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6309 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5123, Invalid=20959, Unknown=0, NotChecked=0, Total=26082 [2022-01-31 02:28:53,928 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 19 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:53,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 111 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:28:53,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-01-31 02:28:53,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-01-31 02:28:53,969 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) [2022-01-31 02:28:53,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2022-01-31 02:28:53,969 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 317 [2022-01-31 02:28:53,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:53,970 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2022-01-31 02:28:53,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 82 states have internal predecessors, (129), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-31 02:28:53,970 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2022-01-31 02:28:53,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-01-31 02:28:53,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:53,972 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:53,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-01-31 02:28:54,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-01-31 02:28:54,186 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:54,186 INFO L85 PathProgramCache]: Analyzing trace with hash -344689619, now seen corresponding path program 76 times [2022-01-31 02:28:54,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:54,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584331750] [2022-01-31 02:28:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:54,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 02:28:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 02:28:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:28:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:28:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:28:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:28:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:28:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:28:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:28:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:28:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:28:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:28:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:28:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:28:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:28:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:28:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:28:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:28:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:28:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:28:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:28:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:28:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:28:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:28:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:28:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:28:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:28:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:28:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:28:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:28:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:28:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 02:28:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 02:28:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 02:28:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 02:28:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 02:28:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 02:28:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 02:28:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-01-31 02:28:54,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:54,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584331750] [2022-01-31 02:28:54,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584331750] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:54,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844088643] [2022-01-31 02:28:54,990 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:28:54,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:54,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:54,991 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) [2022-01-31 02:28:54,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-31 02:28:55,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:28:55,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:55,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 81 conjunts are in the unsatisfiable core [2022-01-31 02:28:55,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-01-31 02:28:55,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-01-31 02:28:56,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844088643] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:56,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:56,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 48 [2022-01-31 02:28:56,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062867797] [2022-01-31 02:28:56,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:56,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-31 02:28:56,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:56,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-31 02:28:56,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2022-01-31 02:28:56,002 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) [2022-01-31 02:28:56,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:28:56,910 INFO L93 Difference]: Finished difference Result 334 states and 336 transitions. [2022-01-31 02:28:56,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-31 02:28:56,910 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 [2022-01-31 02:28:56,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:28:56,911 INFO L225 Difference]: With dead ends: 334 [2022-01-31 02:28:56,911 INFO L226 Difference]: Without dead ends: 332 [2022-01-31 02:28:56,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 748 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1568 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2620, Invalid=5752, Unknown=0, NotChecked=0, Total=8372 [2022-01-31 02:28:56,912 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 110 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:28:56,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 50 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:28:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-01-31 02:28:56,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 328. [2022-01-31 02:28:56,953 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) [2022-01-31 02:28:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2022-01-31 02:28:56,954 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 318 [2022-01-31 02:28:56,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:28:56,954 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2022-01-31 02:28:56,954 INFO L471 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) [2022-01-31 02:28:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2022-01-31 02:28:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-01-31 02:28:56,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:28:56,956 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:28:56,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-01-31 02:28:57,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:57,171 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:28:57,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:28:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1445410598, now seen corresponding path program 77 times [2022-01-31 02:28:57,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:28:57,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963495814] [2022-01-31 02:28:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:28:57,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:28:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:28:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-01-31 02:28:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 02:28:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:28:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:28:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:28:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:28:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:28:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:28:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:28:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:28:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:28:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:28:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:28:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:28:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:28:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:28:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:28:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:28:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:28:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:28:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:28:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:28:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:28:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:28:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:28:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:28:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:28:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:28:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:28:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:28:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:28:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 02:28:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 02:28:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 02:28:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 02:28:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 02:28:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 02:28:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 02:28:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 02:28:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:28:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-01-31 02:28:58,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:28:58,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963495814] [2022-01-31 02:28:58,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963495814] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:28:58,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463589780] [2022-01-31 02:28:58,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:28:58,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:28:58,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:28:58,856 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) [2022-01-31 02:28:58,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-31 02:28:58,989 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2022-01-31 02:28:58,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:28:58,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 82 conjunts are in the unsatisfiable core [2022-01-31 02:28:59,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:28:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-01-31 02:28:59,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:28:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-01-31 02:28:59,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463589780] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:28:59,916 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:28:59,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83, 83] total 85 [2022-01-31 02:28:59,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514743908] [2022-01-31 02:28:59,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:28:59,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-01-31 02:28:59,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:28:59,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-01-31 02:28:59,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1767, Invalid=5373, Unknown=0, NotChecked=0, Total=7140 [2022-01-31 02:28:59,918 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand has 85 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 84 states have internal predecessors, (132), 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) [2022-01-31 02:29:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:02,483 INFO L93 Difference]: Finished difference Result 457 states and 498 transitions. [2022-01-31 02:29:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-31 02:29:02,483 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 84 states have internal predecessors, (132), 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 325 [2022-01-31 02:29:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:02,484 INFO L225 Difference]: With dead ends: 457 [2022-01-31 02:29:02,484 INFO L226 Difference]: Without dead ends: 329 [2022-01-31 02:29:02,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 728 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6631 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5374, Invalid=22016, Unknown=0, NotChecked=0, Total=27390 [2022-01-31 02:29:02,486 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 19 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:02,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 107 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:29:02,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-01-31 02:29:02,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-01-31 02:29:02,513 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) [2022-01-31 02:29:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2022-01-31 02:29:02,513 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 325 [2022-01-31 02:29:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:02,514 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2022-01-31 02:29:02,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 84 states have internal predecessors, (132), 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) [2022-01-31 02:29:02,514 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2022-01-31 02:29:02,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-01-31 02:29:02,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:02,515 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:02,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-01-31 02:29:02,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:02,715 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:02,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1364106100, now seen corresponding path program 78 times [2022-01-31 02:29:02,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:02,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667864369] [2022-01-31 02:29:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:02,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 02:29:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 02:29:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:29:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:29:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:29:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:29:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:29:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:29:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:29:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:29:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:29:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:29:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:29:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:29:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:29:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:29:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:29:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:29:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:29:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:29:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:29:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:29:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:29:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:29:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 02:29:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 02:29:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 02:29:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 02:29:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 02:29:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 02:29:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 02:29:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 02:29:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 02:29:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 02:29:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 02:29:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 02:29:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 02:29:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 02:29:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 02:29:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-01-31 02:29:03,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:03,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667864369] [2022-01-31 02:29:03,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667864369] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:03,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181480357] [2022-01-31 02:29:03,457 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:29:03,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:03,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:03,459 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) [2022-01-31 02:29:03,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-31 02:29:03,603 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2022-01-31 02:29:03,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:29:03,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 83 conjunts are in the unsatisfiable core [2022-01-31 02:29:03,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:29:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-01-31 02:29:04,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:29:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-01-31 02:29:04,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181480357] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:29:04,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:29:04,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 49 [2022-01-31 02:29:04,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236171790] [2022-01-31 02:29:04,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:29:04,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-31 02:29:04,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:29:04,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-31 02:29:04,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=918, Invalid=1434, Unknown=0, NotChecked=0, Total=2352 [2022-01-31 02:29:04,522 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) [2022-01-31 02:29:05,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:05,435 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2022-01-31 02:29:05,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-31 02:29:05,436 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 [2022-01-31 02:29:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:05,437 INFO L225 Difference]: With dead ends: 342 [2022-01-31 02:29:05,437 INFO L226 Difference]: Without dead ends: 340 [2022-01-31 02:29:05,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 767 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2746, Invalid=5996, Unknown=0, NotChecked=0, Total=8742 [2022-01-31 02:29:05,438 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 116 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:05,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 45 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:29:05,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-01-31 02:29:05,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2022-01-31 02:29:05,490 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) [2022-01-31 02:29:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2022-01-31 02:29:05,490 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 326 [2022-01-31 02:29:05,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:05,491 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2022-01-31 02:29:05,491 INFO L471 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) [2022-01-31 02:29:05,491 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2022-01-31 02:29:05,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-01-31 02:29:05,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:05,492 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:05,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-01-31 02:29:05,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-01-31 02:29:05,693 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:05,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:05,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1577840103, now seen corresponding path program 79 times [2022-01-31 02:29:05,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:05,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617885969] [2022-01-31 02:29:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:05,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-31 02:29:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 02:29:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:29:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:29:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:29:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:29:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:29:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:29:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:29:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:29:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:29:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:29:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:29:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:29:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:29:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:29:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:29:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:29:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:29:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:29:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:29:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:29:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:29:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:29:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 02:29:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 02:29:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 02:29:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 02:29:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 02:29:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 02:29:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 02:29:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 02:29:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 02:29:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 02:29:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 02:29:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 02:29:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 02:29:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 02:29:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 02:29:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 02:29:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-01-31 02:29:07,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:07,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617885969] [2022-01-31 02:29:07,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617885969] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:07,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281398808] [2022-01-31 02:29:07,462 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:29:07,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:07,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:07,463 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) [2022-01-31 02:29:07,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-31 02:29:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:07,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 84 conjunts are in the unsatisfiable core [2022-01-31 02:29:07,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:29:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-01-31 02:29:08,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:29:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-01-31 02:29:08,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281398808] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:29:08,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:29:08,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85, 85] total 87 [2022-01-31 02:29:08,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769352948] [2022-01-31 02:29:08,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:29:08,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-01-31 02:29:08,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:29:08,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-01-31 02:29:08,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1852, Invalid=5630, Unknown=0, NotChecked=0, Total=7482 [2022-01-31 02:29:08,487 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 87 states, 87 states have (on average 1.5517241379310345) internal successors, (135), 86 states have internal predecessors, (135), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 02:29:11,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:11,133 INFO L93 Difference]: Finished difference Result 468 states and 510 transitions. [2022-01-31 02:29:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-31 02:29:11,134 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.5517241379310345) internal successors, (135), 86 states have internal predecessors, (135), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 333 [2022-01-31 02:29:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:11,135 INFO L225 Difference]: With dead ends: 468 [2022-01-31 02:29:11,135 INFO L226 Difference]: Without dead ends: 337 [2022-01-31 02:29:11,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 746 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6961 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5631, Invalid=23099, Unknown=0, NotChecked=0, Total=28730 [2022-01-31 02:29:11,137 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 19 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1754 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:11,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 113 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:29:11,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-01-31 02:29:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2022-01-31 02:29:11,174 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) [2022-01-31 02:29:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2022-01-31 02:29:11,174 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 333 [2022-01-31 02:29:11,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:11,174 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2022-01-31 02:29:11,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 1.5517241379310345) internal successors, (135), 86 states have internal predecessors, (135), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-01-31 02:29:11,175 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2022-01-31 02:29:11,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-01-31 02:29:11,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:11,176 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:11,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-01-31 02:29:11,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:11,376 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:11,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1487055539, now seen corresponding path program 80 times [2022-01-31 02:29:11,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:11,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147593248] [2022-01-31 02:29:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:11,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 02:29:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 02:29:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:29:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:29:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:29:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:29:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:29:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:29:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:29:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:29:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:29:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:29:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:29:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:29:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:29:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:29:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:29:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:29:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:29:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:29:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:29:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:29:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:29:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:29:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:29:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 02:29:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 02:29:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 02:29:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 02:29:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 02:29:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 02:29:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 02:29:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 02:29:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 02:29:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 02:29:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 02:29:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 02:29:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 02:29:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 02:29:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 02:29:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-01-31 02:29:12,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:12,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147593248] [2022-01-31 02:29:12,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147593248] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:12,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474632381] [2022-01-31 02:29:12,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:29:12,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:12,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:12,155 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) [2022-01-31 02:29:12,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-31 02:29:12,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:29:12,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:29:12,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 85 conjunts are in the unsatisfiable core [2022-01-31 02:29:12,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:29:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-01-31 02:29:12,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:29:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-01-31 02:29:13,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474632381] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:29:13,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:29:13,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 50 [2022-01-31 02:29:13,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191267016] [2022-01-31 02:29:13,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:29:13,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 02:29:13,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:29:13,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 02:29:13,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=961, Invalid=1489, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 02:29:13,242 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) [2022-01-31 02:29:14,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:14,171 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2022-01-31 02:29:14,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 02:29:14,172 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 [2022-01-31 02:29:14,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:14,173 INFO L225 Difference]: With dead ends: 350 [2022-01-31 02:29:14,173 INFO L226 Difference]: Without dead ends: 348 [2022-01-31 02:29:14,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 786 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2875, Invalid=6245, Unknown=0, NotChecked=0, Total=9120 [2022-01-31 02:29:14,174 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 116 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:14,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 40 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:29:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-01-31 02:29:14,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2022-01-31 02:29:14,213 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) [2022-01-31 02:29:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2022-01-31 02:29:14,213 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 334 [2022-01-31 02:29:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:14,213 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2022-01-31 02:29:14,213 INFO L471 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) [2022-01-31 02:29:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2022-01-31 02:29:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-01-31 02:29:14,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:14,215 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:14,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-01-31 02:29:14,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:14,415 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:14,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:14,416 INFO L85 PathProgramCache]: Analyzing trace with hash -908799482, now seen corresponding path program 81 times [2022-01-31 02:29:14,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:14,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871874526] [2022-01-31 02:29:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:14,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-31 02:29:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 02:29:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:29:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:29:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:29:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:29:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:29:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:29:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:29:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:29:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:29:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:29:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:29:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:29:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:29:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:29:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:29:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:29:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:29:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:29:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:29:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:29:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:29:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:29:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:29:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 02:29:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 02:29:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 02:29:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 02:29:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 02:29:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 02:29:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 02:29:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 02:29:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 02:29:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 02:29:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 02:29:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 02:29:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 02:29:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 02:29:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 02:29:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 02:29:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-01-31 02:29:16,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:16,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871874526] [2022-01-31 02:29:16,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871874526] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:16,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349641933] [2022-01-31 02:29:16,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:29:16,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:16,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:16,236 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) [2022-01-31 02:29:16,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-31 02:29:16,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2022-01-31 02:29:16,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:29:16,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 86 conjunts are in the unsatisfiable core [2022-01-31 02:29:16,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:29:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-01-31 02:29:16,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:29:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-01-31 02:29:17,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349641933] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:29:17,367 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:29:17,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87, 87] total 89 [2022-01-31 02:29:17,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692458817] [2022-01-31 02:29:17,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:29:17,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-31 02:29:17,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:29:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-31 02:29:17,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1939, Invalid=5893, Unknown=0, NotChecked=0, Total=7832 [2022-01-31 02:29:17,369 INFO L87 Difference]: Start difference. First operand 344 states and 345 transitions. Second operand has 89 states, 89 states have (on average 1.550561797752809) internal successors, (138), 88 states have internal predecessors, (138), 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) [2022-01-31 02:29:19,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:19,972 INFO L93 Difference]: Finished difference Result 479 states and 522 transitions. [2022-01-31 02:29:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-31 02:29:19,972 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.550561797752809) internal successors, (138), 88 states have internal predecessors, (138), 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 341 [2022-01-31 02:29:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:19,973 INFO L225 Difference]: With dead ends: 479 [2022-01-31 02:29:19,973 INFO L226 Difference]: Without dead ends: 345 [2022-01-31 02:29:19,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 764 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7299 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5894, Invalid=24208, Unknown=0, NotChecked=0, Total=30102 [2022-01-31 02:29:19,977 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 19 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:19,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 114 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:29:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-01-31 02:29:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-01-31 02:29:20,032 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) [2022-01-31 02:29:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2022-01-31 02:29:20,033 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 341 [2022-01-31 02:29:20,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:20,033 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2022-01-31 02:29:20,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.550561797752809) internal successors, (138), 88 states have internal predecessors, (138), 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) [2022-01-31 02:29:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2022-01-31 02:29:20,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-01-31 02:29:20,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:20,034 INFO L514 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:20,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-01-31 02:29:20,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-01-31 02:29:20,235 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash -837586068, now seen corresponding path program 82 times [2022-01-31 02:29:20,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:20,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606192636] [2022-01-31 02:29:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:20,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 02:29:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:29:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:29:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:29:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:29:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:29:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:29:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:29:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:29:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:29:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:29:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:20,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:29:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:29:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:29:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:29:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:29:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:29:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:29:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:29:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:29:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:29:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:29:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:29:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:29:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:29:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:29:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 02:29:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 02:29:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 02:29:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 02:29:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 02:29:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 02:29:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 02:29:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 02:29:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 02:29:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 02:29:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 02:29:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 02:29:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 02:29:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 02:29:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 02:29:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-01-31 02:29:21,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:21,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606192636] [2022-01-31 02:29:21,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606192636] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:21,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131834870] [2022-01-31 02:29:21,050 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:29:21,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:21,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:21,051 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) [2022-01-31 02:29:21,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-31 02:29:21,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:29:21,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:29:21,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 87 conjunts are in the unsatisfiable core [2022-01-31 02:29:21,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:29:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-01-31 02:29:21,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:29:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-01-31 02:29:22,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131834870] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:29:22,136 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:29:22,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 51 [2022-01-31 02:29:22,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559035232] [2022-01-31 02:29:22,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:29:22,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-31 02:29:22,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:29:22,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-31 02:29:22,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=1545, Unknown=0, NotChecked=0, Total=2550 [2022-01-31 02:29:22,138 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) [2022-01-31 02:29:23,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:23,091 INFO L93 Difference]: Finished difference Result 358 states and 360 transitions. [2022-01-31 02:29:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-31 02:29:23,092 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 [2022-01-31 02:29:23,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:23,093 INFO L225 Difference]: With dead ends: 358 [2022-01-31 02:29:23,093 INFO L226 Difference]: Without dead ends: 356 [2022-01-31 02:29:23,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 805 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3007, Invalid=6499, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 02:29:23,094 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 118 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:23,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 50 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:29:23,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-01-31 02:29:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 352. [2022-01-31 02:29:23,137 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) [2022-01-31 02:29:23,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2022-01-31 02:29:23,138 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 342 [2022-01-31 02:29:23,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:23,138 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2022-01-31 02:29:23,138 INFO L471 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) [2022-01-31 02:29:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2022-01-31 02:29:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-01-31 02:29:23,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:23,139 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:23,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-01-31 02:29:23,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:23,340 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:23,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1041931513, now seen corresponding path program 83 times [2022-01-31 02:29:23,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:23,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514821190] [2022-01-31 02:29:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:23,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-31 02:29:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:29:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:29:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:29:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:29:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:29:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:29:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:29:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:29:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:29:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:29:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:29:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:29:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:29:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:29:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:29:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:29:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:29:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:29:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:29:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:29:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:29:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:29:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:29:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:29:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:29:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 02:29:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 02:29:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 02:29:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 02:29:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 02:29:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 02:29:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 02:29:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 02:29:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 02:29:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 02:29:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 02:29:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 02:29:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 02:29:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 02:29:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 02:29:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 02:29:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-01-31 02:29:25,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:25,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514821190] [2022-01-31 02:29:25,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514821190] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:25,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121858838] [2022-01-31 02:29:25,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:29:25,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:25,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:25,234 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) [2022-01-31 02:29:25,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-31 02:29:25,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2022-01-31 02:29:25,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:29:25,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 88 conjunts are in the unsatisfiable core [2022-01-31 02:29:25,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:29:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-01-31 02:29:25,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:29:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-01-31 02:29:26,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121858838] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:29:26,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:29:26,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89, 89] total 91 [2022-01-31 02:29:26,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218529334] [2022-01-31 02:29:26,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:29:26,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-31 02:29:26,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:29:26,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-31 02:29:26,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2028, Invalid=6162, Unknown=0, NotChecked=0, Total=8190 [2022-01-31 02:29:26,350 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand has 91 states, 91 states have (on average 1.5494505494505495) internal successors, (141), 90 states have internal predecessors, (141), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 02:29:29,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:29,254 INFO L93 Difference]: Finished difference Result 490 states and 534 transitions. [2022-01-31 02:29:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-31 02:29:29,255 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.5494505494505495) internal successors, (141), 90 states have internal predecessors, (141), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 349 [2022-01-31 02:29:29,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:29,256 INFO L225 Difference]: With dead ends: 490 [2022-01-31 02:29:29,256 INFO L226 Difference]: Without dead ends: 353 [2022-01-31 02:29:29,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 782 SyntacticMatches, 1 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7645 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=6163, Invalid=25343, Unknown=0, NotChecked=0, Total=31506 [2022-01-31 02:29:29,258 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:29,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 105 Invalid, 2647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 02:29:29,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-01-31 02:29:29,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2022-01-31 02:29:29,289 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) [2022-01-31 02:29:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2022-01-31 02:29:29,290 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 349 [2022-01-31 02:29:29,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:29,290 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2022-01-31 02:29:29,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 1.5494505494505495) internal successors, (141), 90 states have internal predecessors, (141), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-01-31 02:29:29,290 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2022-01-31 02:29:29,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-01-31 02:29:29,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:29,291 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:29,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-01-31 02:29:29,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:29,492 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:29,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash -986235283, now seen corresponding path program 84 times [2022-01-31 02:29:29,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:29,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660089255] [2022-01-31 02:29:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:29,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 02:29:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:29:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:29:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:29:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:29:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:29:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:29:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:29:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:29:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:29:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:29:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:29:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:29:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:29:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:29:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:29:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:29:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:29:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:29:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:29:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:29:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:29:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:29:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:29:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:29:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:29:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:29:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 02:29:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 02:29:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 02:29:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 02:29:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 02:29:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 02:29:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 02:29:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 02:29:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 02:29:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 02:29:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 02:29:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 02:29:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 02:29:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 02:29:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 02:29:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-01-31 02:29:30,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:30,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660089255] [2022-01-31 02:29:30,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660089255] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:30,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386232209] [2022-01-31 02:29:30,336 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:29:30,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:30,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:30,340 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) [2022-01-31 02:29:30,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-31 02:29:30,500 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2022-01-31 02:29:30,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:29:30,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 89 conjunts are in the unsatisfiable core [2022-01-31 02:29:30,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:29:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-01-31 02:29:30,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:29:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-01-31 02:29:31,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386232209] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:29:31,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:29:31,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 52 [2022-01-31 02:29:31,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011534684] [2022-01-31 02:29:31,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:29:31,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 02:29:31,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:29:31,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 02:29:31,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1050, Invalid=1602, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 02:29:31,494 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) [2022-01-31 02:29:32,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:32,471 INFO L93 Difference]: Finished difference Result 366 states and 368 transitions. [2022-01-31 02:29:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-31 02:29:32,471 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 [2022-01-31 02:29:32,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:32,472 INFO L225 Difference]: With dead ends: 366 [2022-01-31 02:29:32,472 INFO L226 Difference]: Without dead ends: 364 [2022-01-31 02:29:32,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 824 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3142, Invalid=6758, Unknown=0, NotChecked=0, Total=9900 [2022-01-31 02:29:32,473 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 124 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:32,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 50 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:29:32,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-01-31 02:29:32,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 360. [2022-01-31 02:29:32,505 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) [2022-01-31 02:29:32,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2022-01-31 02:29:32,506 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 350 [2022-01-31 02:29:32,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:32,507 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2022-01-31 02:29:32,507 INFO L471 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) [2022-01-31 02:29:32,507 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2022-01-31 02:29:32,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-01-31 02:29:32,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:32,509 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:32,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-01-31 02:29:32,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:32,713 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:32,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:32,713 INFO L85 PathProgramCache]: Analyzing trace with hash 64513254, now seen corresponding path program 85 times [2022-01-31 02:29:32,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:32,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731000385] [2022-01-31 02:29:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:32,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-01-31 02:29:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:29:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:29:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:29:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:29:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:29:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:29:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:29:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:29:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:29:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:29:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:29:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:29:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:29:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:29:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:29:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:29:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:29:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:29:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:29:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:29:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:29:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:29:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:29:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:29:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:29:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:29:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 02:29:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 02:29:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 02:29:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 02:29:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 02:29:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 02:29:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 02:29:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 02:29:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 02:29:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 02:29:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 02:29:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 02:29:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 02:29:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 02:29:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 02:29:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 02:29:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-01-31 02:29:34,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:34,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731000385] [2022-01-31 02:29:34,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731000385] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:34,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009299110] [2022-01-31 02:29:34,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:29:34,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:34,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:34,707 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) [2022-01-31 02:29:34,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-31 02:29:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:34,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 90 conjunts are in the unsatisfiable core [2022-01-31 02:29:34,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:29:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-01-31 02:29:35,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:29:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-01-31 02:29:35,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009299110] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:29:35,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:29:35,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91, 91] total 93 [2022-01-31 02:29:35,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617511604] [2022-01-31 02:29:35,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:29:35,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-31 02:29:35,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:29:35,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-31 02:29:35,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2119, Invalid=6437, Unknown=0, NotChecked=0, Total=8556 [2022-01-31 02:29:35,815 INFO L87 Difference]: Start difference. First operand 360 states and 361 transitions. Second operand has 93 states, 93 states have (on average 1.5483870967741935) internal successors, (144), 92 states have internal predecessors, (144), 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) [2022-01-31 02:29:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:38,475 INFO L93 Difference]: Finished difference Result 501 states and 546 transitions. [2022-01-31 02:29:38,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-31 02:29:38,476 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.5483870967741935) internal successors, (144), 92 states have internal predecessors, (144), 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 357 [2022-01-31 02:29:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:38,477 INFO L225 Difference]: With dead ends: 501 [2022-01-31 02:29:38,477 INFO L226 Difference]: Without dead ends: 361 [2022-01-31 02:29:38,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 800 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7999 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6438, Invalid=26504, Unknown=0, NotChecked=0, Total=32942 [2022-01-31 02:29:38,479 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:38,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 91 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:29:38,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-01-31 02:29:38,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2022-01-31 02:29:38,520 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) [2022-01-31 02:29:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2022-01-31 02:29:38,521 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 357 [2022-01-31 02:29:38,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:38,521 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2022-01-31 02:29:38,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.5483870967741935) internal successors, (144), 92 states have internal predecessors, (144), 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) [2022-01-31 02:29:38,521 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2022-01-31 02:29:38,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-01-31 02:29:38,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:38,523 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:38,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-01-31 02:29:38,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:38,739 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1000113588, now seen corresponding path program 86 times [2022-01-31 02:29:38,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:38,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930689908] [2022-01-31 02:29:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:38,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 02:29:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:29:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:29:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:29:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:29:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:29:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:29:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:29:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:29:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:29:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:29:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:29:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:29:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:29:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:29:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:29:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:29:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:29:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:29:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:29:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:29:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:29:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:29:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:29:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:29:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:29:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:29:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:29:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 02:29:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 02:29:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 02:29:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 02:29:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 02:29:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 02:29:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 02:29:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 02:29:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 02:29:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 02:29:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 02:29:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 02:29:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 02:29:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 02:29:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 02:29:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1032 proven. 2839 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-01-31 02:29:39,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:39,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930689908] [2022-01-31 02:29:39,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930689908] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:39,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197732591] [2022-01-31 02:29:39,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:29:39,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:39,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:39,618 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) [2022-01-31 02:29:39,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-31 02:29:39,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:29:39,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:29:39,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 91 conjunts are in the unsatisfiable core [2022-01-31 02:29:39,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:29:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-01-31 02:29:40,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:29:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-01-31 02:29:40,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197732591] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:29:40,746 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:29:40,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 53 [2022-01-31 02:29:40,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437016828] [2022-01-31 02:29:40,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:29:40,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-31 02:29:40,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:29:40,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-31 02:29:40,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1096, Invalid=1660, Unknown=0, NotChecked=0, Total=2756 [2022-01-31 02:29:40,747 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) [2022-01-31 02:29:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:41,770 INFO L93 Difference]: Finished difference Result 374 states and 376 transitions. [2022-01-31 02:29:41,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 02:29:41,770 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 [2022-01-31 02:29:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:41,771 INFO L225 Difference]: With dead ends: 374 [2022-01-31 02:29:41,771 INFO L226 Difference]: Without dead ends: 372 [2022-01-31 02:29:41,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 843 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1878 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3280, Invalid=7022, Unknown=0, NotChecked=0, Total=10302 [2022-01-31 02:29:41,772 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 124 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:41,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 60 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:29:41,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-01-31 02:29:41,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 368. [2022-01-31 02:29:41,805 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) [2022-01-31 02:29:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 369 transitions. [2022-01-31 02:29:41,805 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 369 transitions. Word has length 358 [2022-01-31 02:29:41,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:41,805 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 369 transitions. [2022-01-31 02:29:41,806 INFO L471 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) [2022-01-31 02:29:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 369 transitions. [2022-01-31 02:29:41,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-01-31 02:29:41,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:41,807 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:41,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-01-31 02:29:42,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:42,007 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:42,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:42,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1034543143, now seen corresponding path program 87 times [2022-01-31 02:29:42,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:42,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491794870] [2022-01-31 02:29:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:42,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-01-31 02:29:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:29:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:29:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:29:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:29:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:29:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:29:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:29:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:29:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:29:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:29:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:29:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:29:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:29:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:29:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:29:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:29:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:29:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:29:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:29:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:29:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:29:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:29:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:29:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:29:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:29:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:29:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:29:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 02:29:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 02:29:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 02:29:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 02:29:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 02:29:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 02:29:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 02:29:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 02:29:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 02:29:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 02:29:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 02:29:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 02:29:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 02:29:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 02:29:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 02:29:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 02:29:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-01-31 02:29:44,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:44,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491794870] [2022-01-31 02:29:44,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491794870] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:44,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127686799] [2022-01-31 02:29:44,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:29:44,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:44,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:44,064 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) [2022-01-31 02:29:44,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-31 02:29:44,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2022-01-31 02:29:44,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:29:44,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 92 conjunts are in the unsatisfiable core [2022-01-31 02:29:44,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:29:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-01-31 02:29:44,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:29:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-01-31 02:29:45,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127686799] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:29:45,257 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:29:45,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93, 93] total 95 [2022-01-31 02:29:45,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818532869] [2022-01-31 02:29:45,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:29:45,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-01-31 02:29:45,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:29:45,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-01-31 02:29:45,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2212, Invalid=6718, Unknown=0, NotChecked=0, Total=8930 [2022-01-31 02:29:45,259 INFO L87 Difference]: Start difference. First operand 368 states and 369 transitions. Second operand has 95 states, 95 states have (on average 1.5473684210526315) internal successors, (147), 94 states have internal predecessors, (147), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 02:29:48,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:48,153 INFO L93 Difference]: Finished difference Result 512 states and 558 transitions. [2022-01-31 02:29:48,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-31 02:29:48,153 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.5473684210526315) internal successors, (147), 94 states have internal predecessors, (147), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 365 [2022-01-31 02:29:48,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:48,155 INFO L225 Difference]: With dead ends: 512 [2022-01-31 02:29:48,155 INFO L226 Difference]: Without dead ends: 369 [2022-01-31 02:29:48,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1003 GetRequests, 818 SyntacticMatches, 1 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8361 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6719, Invalid=27691, Unknown=0, NotChecked=0, Total=34410 [2022-01-31 02:29:48,156 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:48,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 87 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:29:48,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-01-31 02:29:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2022-01-31 02:29:48,202 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) [2022-01-31 02:29:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2022-01-31 02:29:48,203 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 365 [2022-01-31 02:29:48,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:48,203 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2022-01-31 02:29:48,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.5473684210526315) internal successors, (147), 94 states have internal predecessors, (147), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-31 02:29:48,204 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2022-01-31 02:29:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-01-31 02:29:48,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:48,206 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:48,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-01-31 02:29:48,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-01-31 02:29:48,419 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:48,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash -208392307, now seen corresponding path program 88 times [2022-01-31 02:29:48,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:48,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869654337] [2022-01-31 02:29:48,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:48,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 02:29:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:29:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:29:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:29:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:29:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:29:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:29:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:29:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:29:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:29:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:29:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:29:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:29:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:29:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:29:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:29:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:29:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:29:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:29:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:29:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:29:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:29:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:29:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:29:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:29:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:29:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:29:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:29:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:29:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 02:29:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 02:29:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 02:29:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 02:29:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 02:29:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 02:29:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 02:29:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 02:29:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 02:29:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 02:29:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 02:29:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 02:29:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 02:29:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 02:29:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 02:29:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1078 proven. 2971 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-01-31 02:29:49,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:49,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869654337] [2022-01-31 02:29:49,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869654337] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:49,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047153524] [2022-01-31 02:29:49,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:29:49,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:49,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:49,325 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) [2022-01-31 02:29:49,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-31 02:29:49,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:29:49,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:29:49,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 93 conjunts are in the unsatisfiable core [2022-01-31 02:29:49,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:29:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-01-31 02:29:49,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:29:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-01-31 02:29:50,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047153524] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:29:50,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:29:50,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 54 [2022-01-31 02:29:50,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363175074] [2022-01-31 02:29:50,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:29:50,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-01-31 02:29:50,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:29:50,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-01-31 02:29:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1143, Invalid=1719, Unknown=0, NotChecked=0, Total=2862 [2022-01-31 02:29:50,496 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) [2022-01-31 02:29:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:51,575 INFO L93 Difference]: Finished difference Result 382 states and 384 transitions. [2022-01-31 02:29:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-31 02:29:51,575 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 [2022-01-31 02:29:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:51,576 INFO L225 Difference]: With dead ends: 382 [2022-01-31 02:29:51,576 INFO L226 Difference]: Without dead ends: 380 [2022-01-31 02:29:51,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 862 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1943 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3421, Invalid=7291, Unknown=0, NotChecked=0, Total=10712 [2022-01-31 02:29:51,577 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 126 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:51,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 30 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 02:29:51,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-01-31 02:29:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2022-01-31 02:29:51,624 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) [2022-01-31 02:29:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2022-01-31 02:29:51,624 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 366 [2022-01-31 02:29:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:51,624 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2022-01-31 02:29:51,624 INFO L471 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) [2022-01-31 02:29:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2022-01-31 02:29:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-01-31 02:29:51,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:51,626 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:51,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-01-31 02:29:51,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-01-31 02:29:51,826 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:51,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:51,827 INFO L85 PathProgramCache]: Analyzing trace with hash 761262022, now seen corresponding path program 89 times [2022-01-31 02:29:51,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:51,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124607381] [2022-01-31 02:29:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:51,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-01-31 02:29:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:29:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:29:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:29:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:29:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:29:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:29:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:29:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:29:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:29:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:29:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:29:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:29:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:29:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:29:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:29:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:29:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:29:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:29:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:29:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:29:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:29:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:29:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:29:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:29:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:29:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:29:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:29:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:29:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 02:29:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 02:29:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 02:29:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 02:29:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 02:29:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 02:29:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 02:29:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 02:29:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 02:29:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 02:29:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 02:29:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 02:29:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 02:29:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 02:29:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:54,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 02:29:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 02:29:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-01-31 02:29:54,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:54,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124607381] [2022-01-31 02:29:54,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124607381] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:54,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863630820] [2022-01-31 02:29:54,004 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:29:54,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:54,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:54,007 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) [2022-01-31 02:29:54,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-31 02:29:54,167 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2022-01-31 02:29:54,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:29:54,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 94 conjunts are in the unsatisfiable core [2022-01-31 02:29:54,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:29:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-01-31 02:29:54,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:29:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-01-31 02:29:55,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863630820] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:29:55,217 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:29:55,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95, 95] total 97 [2022-01-31 02:29:55,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342398361] [2022-01-31 02:29:55,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:29:55,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-01-31 02:29:55,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:29:55,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-01-31 02:29:55,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=7005, Unknown=0, NotChecked=0, Total=9312 [2022-01-31 02:29:55,219 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 97 states, 97 states have (on average 1.5463917525773196) internal successors, (150), 96 states have internal predecessors, (150), 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) [2022-01-31 02:29:58,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:29:58,197 INFO L93 Difference]: Finished difference Result 523 states and 570 transitions. [2022-01-31 02:29:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-31 02:29:58,198 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.5463917525773196) internal successors, (150), 96 states have internal predecessors, (150), 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 373 [2022-01-31 02:29:58,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:29:58,199 INFO L225 Difference]: With dead ends: 523 [2022-01-31 02:29:58,199 INFO L226 Difference]: Without dead ends: 377 [2022-01-31 02:29:58,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 836 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8731 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=7006, Invalid=28904, Unknown=0, NotChecked=0, Total=35910 [2022-01-31 02:29:58,201 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1633 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:29:58,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 108 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1633 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:29:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-01-31 02:29:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-01-31 02:29:58,245 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) [2022-01-31 02:29:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2022-01-31 02:29:58,246 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 373 [2022-01-31 02:29:58,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:29:58,246 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2022-01-31 02:29:58,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.5463917525773196) internal successors, (150), 96 states have internal predecessors, (150), 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) [2022-01-31 02:29:58,246 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2022-01-31 02:29:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-01-31 02:29:58,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:29:58,248 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:29:58,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-01-31 02:29:58,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:58,448 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:29:58,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:29:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1966114516, now seen corresponding path program 90 times [2022-01-31 02:29:58,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:29:58,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525960432] [2022-01-31 02:29:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:29:58,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:29:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:29:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 02:29:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:29:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:29:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:29:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:29:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:29:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:29:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:29:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:29:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:29:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:29:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:29:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:29:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:29:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:29:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:29:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:29:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:29:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:29:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:29:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:29:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:29:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:29:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:29:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:29:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:29:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:29:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:29:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:29:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:29:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 02:29:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 02:29:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 02:29:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 02:29:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 02:29:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 02:29:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 02:29:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 02:29:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 02:29:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 02:29:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 02:29:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 02:29:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 02:29:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 02:29:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 02:29:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:29:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1125 proven. 3106 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-01-31 02:29:59,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:29:59,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525960432] [2022-01-31 02:29:59,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525960432] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:29:59,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246449177] [2022-01-31 02:29:59,411 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:29:59,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:29:59,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:29:59,412 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) [2022-01-31 02:29:59,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-31 02:29:59,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2022-01-31 02:29:59,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:29:59,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 95 conjunts are in the unsatisfiable core [2022-01-31 02:29:59,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:30:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-01-31 02:30:00,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:30:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-01-31 02:30:00,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246449177] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:30:00,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:30:00,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 55 [2022-01-31 02:30:00,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125036639] [2022-01-31 02:30:00,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:30:00,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-31 02:30:00,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:30:00,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-31 02:30:00,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=1779, Unknown=0, NotChecked=0, Total=2970 [2022-01-31 02:30:00,644 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) [2022-01-31 02:30:01,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:30:01,776 INFO L93 Difference]: Finished difference Result 390 states and 392 transitions. [2022-01-31 02:30:01,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-31 02:30:01,776 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 [2022-01-31 02:30:01,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:30:01,777 INFO L225 Difference]: With dead ends: 390 [2022-01-31 02:30:01,777 INFO L226 Difference]: Without dead ends: 388 [2022-01-31 02:30:01,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 881 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3565, Invalid=7565, Unknown=0, NotChecked=0, Total=11130 [2022-01-31 02:30:01,778 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 123 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:30:01,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 65 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:30:01,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-01-31 02:30:01,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 384. [2022-01-31 02:30:01,814 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) [2022-01-31 02:30:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2022-01-31 02:30:01,815 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 374 [2022-01-31 02:30:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:30:01,815 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2022-01-31 02:30:01,815 INFO L471 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) [2022-01-31 02:30:01,815 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2022-01-31 02:30:01,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-01-31 02:30:01,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:30:01,816 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:30:01,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-01-31 02:30:02,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:02,017 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:30:02,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:30:02,017 INFO L85 PathProgramCache]: Analyzing trace with hash -932485817, now seen corresponding path program 91 times [2022-01-31 02:30:02,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:30:02,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727546207] [2022-01-31 02:30:02,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:30:02,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:30:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:30:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-01-31 02:30:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:30:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:30:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:30:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:30:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:30:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:30:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:30:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:30:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:30:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:30:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:30:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:30:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:30:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:30:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:30:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:30:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:30:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:30:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:30:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:30:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:30:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:30:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:30:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:30:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:30:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:30:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:30:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:30:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:30:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 02:30:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 02:30:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 02:30:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 02:30:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 02:30:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 02:30:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 02:30:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 02:30:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 02:30:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 02:30:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 02:30:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 02:30:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 02:30:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 02:30:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 02:30:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 02:30:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-01-31 02:30:04,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:30:04,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727546207] [2022-01-31 02:30:04,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727546207] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:30:04,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252599184] [2022-01-31 02:30:04,296 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:30:04,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:04,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:30:04,300 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) [2022-01-31 02:30:04,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-31 02:30:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:04,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 96 conjunts are in the unsatisfiable core [2022-01-31 02:30:04,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:30:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-01-31 02:30:04,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:30:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-01-31 02:30:05,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252599184] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:30:05,506 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:30:05,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97, 97] total 99 [2022-01-31 02:30:05,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177118647] [2022-01-31 02:30:05,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:30:05,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-01-31 02:30:05,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:30:05,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-01-31 02:30:05,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2404, Invalid=7298, Unknown=0, NotChecked=0, Total=9702 [2022-01-31 02:30:05,508 INFO L87 Difference]: Start difference. First operand 384 states and 385 transitions. Second operand has 99 states, 99 states have (on average 1.5454545454545454) internal successors, (153), 98 states have internal predecessors, (153), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 02:30:08,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:30:08,830 INFO L93 Difference]: Finished difference Result 534 states and 582 transitions. [2022-01-31 02:30:08,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-31 02:30:08,830 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.5454545454545454) internal successors, (153), 98 states have internal predecessors, (153), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 381 [2022-01-31 02:30:08,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:30:08,832 INFO L225 Difference]: With dead ends: 534 [2022-01-31 02:30:08,832 INFO L226 Difference]: Without dead ends: 385 [2022-01-31 02:30:08,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 854 SyntacticMatches, 1 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9109 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=7299, Invalid=30143, Unknown=0, NotChecked=0, Total=37442 [2022-01-31 02:30:08,834 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 19 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 02:30:08,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 134 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 02:30:08,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-01-31 02:30:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2022-01-31 02:30:08,888 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) [2022-01-31 02:30:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2022-01-31 02:30:08,889 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 381 [2022-01-31 02:30:08,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:30:08,889 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2022-01-31 02:30:08,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.5454545454545454) internal successors, (153), 98 states have internal predecessors, (153), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-01-31 02:30:08,889 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2022-01-31 02:30:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-01-31 02:30:08,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:30:08,891 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:30:08,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-01-31 02:30:09,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:09,091 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:30:09,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:30:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash -108648275, now seen corresponding path program 92 times [2022-01-31 02:30:09,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:30:09,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012110970] [2022-01-31 02:30:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:30:09,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:30:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:30:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 02:30:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:30:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:30:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:30:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:30:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:30:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:30:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:30:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:30:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:30:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:30:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:30:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:30:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:30:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:30:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:30:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:30:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:30:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:30:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:30:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:30:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:30:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:30:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 02:30:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 02:30:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 02:30:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 02:30:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 02:30:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 02:30:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 02:30:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 02:30:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 02:30:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 02:30:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 02:30:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 02:30:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 02:30:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 02:30:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 02:30:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 02:30:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 02:30:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 02:30:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 02:30:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 02:30:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 02:30:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 02:30:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 02:30:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1173 proven. 3244 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-01-31 02:30:10,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:30:10,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012110970] [2022-01-31 02:30:10,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012110970] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:30:10,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542994189] [2022-01-31 02:30:10,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:30:10,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:10,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:30:10,062 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) [2022-01-31 02:30:10,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-31 02:30:10,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:30:10,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:30:10,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 97 conjunts are in the unsatisfiable core [2022-01-31 02:30:10,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:30:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-01-31 02:30:10,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:30:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-01-31 02:30:11,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542994189] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:30:11,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:30:11,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 52] total 56 [2022-01-31 02:30:11,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549613998] [2022-01-31 02:30:11,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:30:11,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-31 02:30:11,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:30:11,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-31 02:30:11,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1240, Invalid=1840, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 02:30:11,266 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) [2022-01-31 02:30:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:30:12,412 INFO L93 Difference]: Finished difference Result 398 states and 400 transitions. [2022-01-31 02:30:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 02:30:12,412 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 [2022-01-31 02:30:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:30:12,413 INFO L225 Difference]: With dead ends: 398 [2022-01-31 02:30:12,414 INFO L226 Difference]: Without dead ends: 396 [2022-01-31 02:30:12,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 900 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3712, Invalid=7844, Unknown=0, NotChecked=0, Total=11556 [2022-01-31 02:30:12,414 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 121 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:30:12,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 60 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:30:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-01-31 02:30:12,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 392. [2022-01-31 02:30:12,451 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) [2022-01-31 02:30:12,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2022-01-31 02:30:12,452 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 382 [2022-01-31 02:30:12,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:30:12,452 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2022-01-31 02:30:12,452 INFO L471 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) [2022-01-31 02:30:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2022-01-31 02:30:12,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-01-31 02:30:12,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:30:12,454 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:30:12,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-01-31 02:30:12,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:12,654 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:30:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:30:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash -954633562, now seen corresponding path program 93 times [2022-01-31 02:30:12,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:30:12,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459536510] [2022-01-31 02:30:12,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:30:12,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:30:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:30:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-31 02:30:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:30:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:30:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:30:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:30:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:30:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:30:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:30:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:30:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:30:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:30:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:30:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:30:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:30:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:30:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:30:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:30:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:30:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:30:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:30:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:30:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:30:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:30:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 02:30:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 02:30:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 02:30:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 02:30:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 02:30:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 02:30:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 02:30:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 02:30:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 02:30:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 02:30:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 02:30:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 02:30:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 02:30:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 02:30:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 02:30:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 02:30:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 02:30:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 02:30:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 02:30:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 02:30:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 02:30:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 02:30:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 02:30:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 02:30:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-01-31 02:30:14,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:30:14,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459536510] [2022-01-31 02:30:14,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459536510] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:30:14,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024712483] [2022-01-31 02:30:14,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:30:14,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:14,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:30:14,988 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) [2022-01-31 02:30:14,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-31 02:30:15,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2022-01-31 02:30:15,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:30:15,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 98 conjunts are in the unsatisfiable core [2022-01-31 02:30:15,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:30:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-01-31 02:30:15,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:30:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-01-31 02:30:16,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024712483] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:30:16,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:30:16,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99, 99] total 101 [2022-01-31 02:30:16,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984279646] [2022-01-31 02:30:16,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:30:16,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-01-31 02:30:16,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:30:16,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-01-31 02:30:16,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2503, Invalid=7597, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 02:30:16,267 INFO L87 Difference]: Start difference. First operand 392 states and 393 transitions. Second operand has 101 states, 101 states have (on average 1.5445544554455446) internal successors, (156), 100 states have internal predecessors, (156), 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) [2022-01-31 02:30:19,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:30:19,519 INFO L93 Difference]: Finished difference Result 545 states and 594 transitions. [2022-01-31 02:30:19,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-31 02:30:19,519 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.5445544554455446) internal successors, (156), 100 states have internal predecessors, (156), 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 389 [2022-01-31 02:30:19,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:30:19,521 INFO L225 Difference]: With dead ends: 545 [2022-01-31 02:30:19,521 INFO L226 Difference]: Without dead ends: 393 [2022-01-31 02:30:19,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 872 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9495 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7598, Invalid=31408, Unknown=0, NotChecked=0, Total=39006 [2022-01-31 02:30:19,524 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 19 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 02:30:19,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 125 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 02:30:19,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-01-31 02:30:19,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-01-31 02:30:19,576 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) [2022-01-31 02:30:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2022-01-31 02:30:19,577 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 389 [2022-01-31 02:30:19,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:30:19,577 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2022-01-31 02:30:19,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.5445544554455446) internal successors, (156), 100 states have internal predecessors, (156), 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) [2022-01-31 02:30:19,577 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2022-01-31 02:30:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-01-31 02:30:19,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:30:19,579 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:30:19,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-01-31 02:30:19,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:19,779 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:30:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:30:19,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1912958988, now seen corresponding path program 94 times [2022-01-31 02:30:19,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:30:19,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926461523] [2022-01-31 02:30:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:30:19,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:30:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:30:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 02:30:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:30:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:30:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:30:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:30:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:30:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:30:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:30:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:30:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:30:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:30:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:30:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:30:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:30:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:30:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:30:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:30:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:30:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:30:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:30:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:30:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:30:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:30:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:30:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 02:30:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 02:30:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 02:30:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 02:30:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 02:30:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 02:30:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 02:30:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 02:30:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 02:30:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 02:30:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 02:30:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 02:30:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 02:30:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 02:30:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 02:30:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 02:30:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 02:30:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 02:30:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 02:30:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 02:30:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 02:30:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 02:30:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 02:30:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1222 proven. 3385 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-01-31 02:30:20,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:30:20,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926461523] [2022-01-31 02:30:20,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926461523] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:30:20,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38713567] [2022-01-31 02:30:20,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:30:20,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:20,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:30:20,787 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) [2022-01-31 02:30:20,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-31 02:30:20,911 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:30:20,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:30:20,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 99 conjunts are in the unsatisfiable core [2022-01-31 02:30:20,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:30:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-01-31 02:30:21,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:30:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-01-31 02:30:22,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38713567] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:30:22,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:30:22,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 57 [2022-01-31 02:30:22,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920855257] [2022-01-31 02:30:22,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:30:22,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-31 02:30:22,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:30:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-31 02:30:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1290, Invalid=1902, Unknown=0, NotChecked=0, Total=3192 [2022-01-31 02:30:22,025 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) [2022-01-31 02:30:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:30:23,213 INFO L93 Difference]: Finished difference Result 406 states and 408 transitions. [2022-01-31 02:30:23,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-31 02:30:23,214 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 [2022-01-31 02:30:23,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:30:23,215 INFO L225 Difference]: With dead ends: 406 [2022-01-31 02:30:23,215 INFO L226 Difference]: Without dead ends: 404 [2022-01-31 02:30:23,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 919 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3862, Invalid=8128, Unknown=0, NotChecked=0, Total=11990 [2022-01-31 02:30:23,216 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 131 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:30:23,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 55 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:30:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-01-31 02:30:23,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 400. [2022-01-31 02:30:23,256 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) [2022-01-31 02:30:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 401 transitions. [2022-01-31 02:30:23,256 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 401 transitions. Word has length 390 [2022-01-31 02:30:23,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:30:23,257 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 401 transitions. [2022-01-31 02:30:23,257 INFO L471 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) [2022-01-31 02:30:23,257 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 401 transitions. [2022-01-31 02:30:23,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-01-31 02:30:23,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:30:23,259 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:30:23,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-01-31 02:30:23,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-01-31 02:30:23,483 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:30:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:30:23,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1849953689, now seen corresponding path program 95 times [2022-01-31 02:30:23,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:30:23,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103731880] [2022-01-31 02:30:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:30:23,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:30:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:30:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-31 02:30:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:30:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:30:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:30:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:30:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:30:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:30:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:30:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:30:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:30:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:30:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:30:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:30:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:30:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:30:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:30:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:30:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:30:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:30:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:30:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:30:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:30:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:30:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:30:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 02:30:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 02:30:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 02:30:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 02:30:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 02:30:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 02:30:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 02:30:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 02:30:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 02:30:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 02:30:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 02:30:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 02:30:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 02:30:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 02:30:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 02:30:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 02:30:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 02:30:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 02:30:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 02:30:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 02:30:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 02:30:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 02:30:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 02:30:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 02:30:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-01-31 02:30:25,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:30:25,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103731880] [2022-01-31 02:30:25,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103731880] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:30:25,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727457471] [2022-01-31 02:30:25,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:30:25,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:25,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:30:25,903 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) [2022-01-31 02:30:25,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-31 02:30:26,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2022-01-31 02:30:26,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:30:26,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 100 conjunts are in the unsatisfiable core [2022-01-31 02:30:26,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:30:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-01-31 02:30:26,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:30:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-01-31 02:30:27,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727457471] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:30:27,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:30:27,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 101] total 103 [2022-01-31 02:30:27,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98783756] [2022-01-31 02:30:27,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:30:27,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-31 02:30:27,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:30:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-31 02:30:27,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2604, Invalid=7902, Unknown=0, NotChecked=0, Total=10506 [2022-01-31 02:30:27,185 INFO L87 Difference]: Start difference. First operand 400 states and 401 transitions. Second operand has 103 states, 103 states have (on average 1.5436893203883495) internal successors, (159), 102 states have internal predecessors, (159), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 02:30:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:30:30,441 INFO L93 Difference]: Finished difference Result 556 states and 606 transitions. [2022-01-31 02:30:30,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-31 02:30:30,441 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.5436893203883495) internal successors, (159), 102 states have internal predecessors, (159), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 397 [2022-01-31 02:30:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:30:30,443 INFO L225 Difference]: With dead ends: 556 [2022-01-31 02:30:30,443 INFO L226 Difference]: Without dead ends: 401 [2022-01-31 02:30:30,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1091 GetRequests, 890 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9889 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=7903, Invalid=32699, Unknown=0, NotChecked=0, Total=40602 [2022-01-31 02:30:30,445 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:30:30,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 106 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:30:30,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-01-31 02:30:30,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-01-31 02:30:30,495 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) [2022-01-31 02:30:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2022-01-31 02:30:30,495 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 397 [2022-01-31 02:30:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:30:30,495 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2022-01-31 02:30:30,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.5436893203883495) internal successors, (159), 102 states have internal predecessors, (159), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-01-31 02:30:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2022-01-31 02:30:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-01-31 02:30:30,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:30:30,497 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:30:30,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-01-31 02:30:30,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:30,698 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:30:30,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:30:30,698 INFO L85 PathProgramCache]: Analyzing trace with hash -694212147, now seen corresponding path program 96 times [2022-01-31 02:30:30,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:30:30,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267837832] [2022-01-31 02:30:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:30:30,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:30:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:30:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:30:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:30:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:30:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:30:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:30:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:30:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:30:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:30:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:30:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:30:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:30:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:30:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:30:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:30:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:30:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:30:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:30:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:30:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:30:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:30:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:30:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:30:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:30:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:30:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:30:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 02:30:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 02:30:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 02:30:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 02:30:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 02:30:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 02:30:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 02:30:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 02:30:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 02:30:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 02:30:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 02:30:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 02:30:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 02:30:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 02:30:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 02:30:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 02:30:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 02:30:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 02:30:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 02:30:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 02:30:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 02:30:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 02:30:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 02:30:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1272 proven. 3529 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-01-31 02:30:31,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:30:31,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267837832] [2022-01-31 02:30:31,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267837832] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:30:31,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066140831] [2022-01-31 02:30:31,739 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:30:31,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:31,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:30:31,740 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) [2022-01-31 02:30:31,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-31 02:30:31,923 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2022-01-31 02:30:31,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:30:31,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 101 conjunts are in the unsatisfiable core [2022-01-31 02:30:31,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:30:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-01-31 02:30:32,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:30:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-01-31 02:30:33,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066140831] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:30:33,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:30:33,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 58 [2022-01-31 02:30:33,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967592117] [2022-01-31 02:30:33,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:30:33,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-31 02:30:33,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:30:33,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-31 02:30:33,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1341, Invalid=1965, Unknown=0, NotChecked=0, Total=3306 [2022-01-31 02:30:33,061 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) [2022-01-31 02:30:34,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:30:34,303 INFO L93 Difference]: Finished difference Result 414 states and 416 transitions. [2022-01-31 02:30:34,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-31 02:30:34,303 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 [2022-01-31 02:30:34,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:30:34,305 INFO L225 Difference]: With dead ends: 414 [2022-01-31 02:30:34,305 INFO L226 Difference]: Without dead ends: 412 [2022-01-31 02:30:34,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 938 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2213 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4015, Invalid=8417, Unknown=0, NotChecked=0, Total=12432 [2022-01-31 02:30:34,306 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 131 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:30:34,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 60 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:30:34,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-01-31 02:30:34,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 408. [2022-01-31 02:30:34,354 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) [2022-01-31 02:30:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 409 transitions. [2022-01-31 02:30:34,355 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 409 transitions. Word has length 398 [2022-01-31 02:30:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:30:34,355 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 409 transitions. [2022-01-31 02:30:34,355 INFO L471 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) [2022-01-31 02:30:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 409 transitions. [2022-01-31 02:30:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-01-31 02:30:34,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:30:34,357 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:30:34,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-01-31 02:30:34,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:34,557 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:30:34,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:30:34,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1993151098, now seen corresponding path program 97 times [2022-01-31 02:30:34,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:30:34,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81167400] [2022-01-31 02:30:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:30:34,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:30:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:30:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-01-31 02:30:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:30:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:30:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:30:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:30:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:30:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:30:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:30:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:30:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:30:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:30:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:30:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:30:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:30:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:30:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:30:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:30:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:30:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:30:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:30:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:30:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:30:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:30:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:30:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:30:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 02:30:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 02:30:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 02:30:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 02:30:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 02:30:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 02:30:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 02:30:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 02:30:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 02:30:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 02:30:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 02:30:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 02:30:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 02:30:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 02:30:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 02:30:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 02:30:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 02:30:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 02:30:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 02:30:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 02:30:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 02:30:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 02:30:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 02:30:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 02:30:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-01-31 02:30:37,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:30:37,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81167400] [2022-01-31 02:30:37,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81167400] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:30:37,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925072877] [2022-01-31 02:30:37,084 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:30:37,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:37,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:30:37,085 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) [2022-01-31 02:30:37,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-31 02:30:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:37,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 102 conjunts are in the unsatisfiable core [2022-01-31 02:30:37,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:30:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-01-31 02:30:37,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:30:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-01-31 02:30:38,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925072877] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:30:38,354 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:30:38,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103, 103] total 105 [2022-01-31 02:30:38,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786046365] [2022-01-31 02:30:38,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:30:38,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-01-31 02:30:38,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:30:38,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-01-31 02:30:38,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=8213, Unknown=0, NotChecked=0, Total=10920 [2022-01-31 02:30:38,356 INFO L87 Difference]: Start difference. First operand 408 states and 409 transitions. Second operand has 105 states, 105 states have (on average 1.542857142857143) internal successors, (162), 104 states have internal predecessors, (162), 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) [2022-01-31 02:30:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:30:41,725 INFO L93 Difference]: Finished difference Result 567 states and 618 transitions. [2022-01-31 02:30:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-31 02:30:41,727 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.542857142857143) internal successors, (162), 104 states have internal predecessors, (162), 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 405 [2022-01-31 02:30:41,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:30:41,729 INFO L225 Difference]: With dead ends: 567 [2022-01-31 02:30:41,729 INFO L226 Difference]: Without dead ends: 409 [2022-01-31 02:30:41,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 908 SyntacticMatches, 1 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10291 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=8214, Invalid=34016, Unknown=0, NotChecked=0, Total=42230 [2022-01-31 02:30:41,732 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:30:41,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 97 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:30:41,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-01-31 02:30:41,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2022-01-31 02:30:41,774 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) [2022-01-31 02:30:41,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2022-01-31 02:30:41,774 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 405 [2022-01-31 02:30:41,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:30:41,774 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2022-01-31 02:30:41,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.542857142857143) internal successors, (162), 104 states have internal predecessors, (162), 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) [2022-01-31 02:30:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2022-01-31 02:30:41,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-01-31 02:30:41,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:30:41,776 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:30:41,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-01-31 02:30:41,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-01-31 02:30:41,977 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:30:41,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:30:41,977 INFO L85 PathProgramCache]: Analyzing trace with hash 36921068, now seen corresponding path program 98 times [2022-01-31 02:30:41,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:30:41,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585844975] [2022-01-31 02:30:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:30:41,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:30:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:30:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:30:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:30:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:30:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:30:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:30:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:30:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:30:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:30:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:30:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:30:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:30:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:30:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:30:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:30:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:30:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:30:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:30:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:30:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:30:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:30:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:30:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:30:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:30:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:30:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:30:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:30:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 02:30:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 02:30:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 02:30:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 02:30:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 02:30:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 02:30:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 02:30:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 02:30:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 02:30:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 02:30:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 02:30:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 02:30:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 02:30:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 02:30:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 02:30:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 02:30:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 02:30:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 02:30:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 02:30:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 02:30:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 02:30:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 02:30:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 02:30:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1323 proven. 3676 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-01-31 02:30:43,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:30:43,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585844975] [2022-01-31 02:30:43,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585844975] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:30:43,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128334857] [2022-01-31 02:30:43,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:30:43,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:43,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:30:43,079 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) [2022-01-31 02:30:43,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-31 02:30:43,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:30:43,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:30:43,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 103 conjunts are in the unsatisfiable core [2022-01-31 02:30:43,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:30:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-01-31 02:30:43,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:30:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-01-31 02:30:44,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128334857] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:30:44,353 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:30:44,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 59 [2022-01-31 02:30:44,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337718031] [2022-01-31 02:30:44,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:30:44,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-31 02:30:44,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:30:44,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-31 02:30:44,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1393, Invalid=2029, Unknown=0, NotChecked=0, Total=3422 [2022-01-31 02:30:44,354 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) [2022-01-31 02:30:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:30:45,570 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2022-01-31 02:30:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-31 02:30:45,570 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 [2022-01-31 02:30:45,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:30:45,572 INFO L225 Difference]: With dead ends: 422 [2022-01-31 02:30:45,572 INFO L226 Difference]: Without dead ends: 420 [2022-01-31 02:30:45,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 957 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4171, Invalid=8711, Unknown=0, NotChecked=0, Total=12882 [2022-01-31 02:30:45,573 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 138 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:30:45,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 45 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:30:45,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-31 02:30:45,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 416. [2022-01-31 02:30:45,617 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) [2022-01-31 02:30:45,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 417 transitions. [2022-01-31 02:30:45,618 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 417 transitions. Word has length 406 [2022-01-31 02:30:45,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:30:45,618 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 417 transitions. [2022-01-31 02:30:45,618 INFO L471 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) [2022-01-31 02:30:45,618 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 417 transitions. [2022-01-31 02:30:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-01-31 02:30:45,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:30:45,620 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:30:45,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-01-31 02:30:45,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:45,821 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:30:45,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:30:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash 565020551, now seen corresponding path program 99 times [2022-01-31 02:30:45,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:30:45,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951379982] [2022-01-31 02:30:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:30:45,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:30:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:30:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-31 02:30:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:30:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:30:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:30:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:30:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:30:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:30:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:30:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:30:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:30:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:30:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:30:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:30:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:30:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:30:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:30:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:30:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:30:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:30:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:30:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:30:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:30:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:30:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:30:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:30:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:30:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 02:30:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 02:30:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 02:30:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 02:30:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 02:30:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 02:30:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 02:30:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 02:30:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 02:30:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 02:30:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 02:30:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 02:30:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 02:30:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 02:30:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 02:30:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 02:30:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 02:30:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 02:30:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 02:30:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 02:30:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 02:30:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 02:30:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 02:30:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 02:30:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-01-31 02:30:48,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:30:48,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951379982] [2022-01-31 02:30:48,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951379982] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:30:48,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969705587] [2022-01-31 02:30:48,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:30:48,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:48,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:30:48,456 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) [2022-01-31 02:30:48,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-31 02:30:48,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2022-01-31 02:30:48,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:30:48,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 104 conjunts are in the unsatisfiable core [2022-01-31 02:30:48,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:30:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-01-31 02:30:49,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:30:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-01-31 02:30:49,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969705587] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:30:49,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:30:49,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105, 105] total 107 [2022-01-31 02:30:49,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680692202] [2022-01-31 02:30:49,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:30:49,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-31 02:30:49,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:30:49,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-31 02:30:49,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2812, Invalid=8530, Unknown=0, NotChecked=0, Total=11342 [2022-01-31 02:30:49,825 INFO L87 Difference]: Start difference. First operand 416 states and 417 transitions. Second operand has 107 states, 107 states have (on average 1.5420560747663552) internal successors, (165), 106 states have internal predecessors, (165), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 02:30:53,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:30:53,493 INFO L93 Difference]: Finished difference Result 578 states and 630 transitions. [2022-01-31 02:30:53,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-31 02:30:53,493 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.5420560747663552) internal successors, (165), 106 states have internal predecessors, (165), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 413 [2022-01-31 02:30:53,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:30:53,495 INFO L225 Difference]: With dead ends: 578 [2022-01-31 02:30:53,495 INFO L226 Difference]: Without dead ends: 417 [2022-01-31 02:30:53,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 926 SyntacticMatches, 1 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10701 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=8531, Invalid=35359, Unknown=0, NotChecked=0, Total=43890 [2022-01-31 02:30:53,498 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 02:30:53,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 108 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 02:30:53,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-01-31 02:30:53,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-01-31 02:30:53,558 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) [2022-01-31 02:30:53,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2022-01-31 02:30:53,558 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 413 [2022-01-31 02:30:53,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:30:53,558 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2022-01-31 02:30:53,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.5420560747663552) internal successors, (165), 106 states have internal predecessors, (165), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-01-31 02:30:53,559 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2022-01-31 02:30:53,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-01-31 02:30:53,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:30:53,560 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:30:53,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-01-31 02:30:53,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:53,775 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:30:53,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:30:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -487509267, now seen corresponding path program 100 times [2022-01-31 02:30:53,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:30:53,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423620774] [2022-01-31 02:30:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:30:53,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:30:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:30:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:30:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:30:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:30:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:30:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:30:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:30:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:30:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:30:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:30:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:30:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:30:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:30:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:30:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:30:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:30:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:30:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:30:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:30:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:30:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:30:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:30:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:30:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:30:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:30:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:30:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:30:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:30:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 02:30:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 02:30:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 02:30:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 02:30:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 02:30:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 02:30:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 02:30:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 02:30:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 02:30:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 02:30:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 02:30:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 02:30:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 02:30:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 02:30:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 02:30:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 02:30:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 02:30:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 02:30:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 02:30:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 02:30:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 02:30:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 02:30:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 02:30:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:30:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1375 proven. 3826 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-01-31 02:30:54,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:30:54,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423620774] [2022-01-31 02:30:54,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423620774] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:30:54,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609273798] [2022-01-31 02:30:54,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:30:54,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:30:54,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:30:54,925 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) [2022-01-31 02:30:54,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-31 02:30:55,079 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:30:55,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:30:55,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 105 conjunts are in the unsatisfiable core [2022-01-31 02:30:55,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:30:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-01-31 02:30:55,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:30:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-01-31 02:30:56,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609273798] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:30:56,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:30:56,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 60 [2022-01-31 02:30:56,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36790404] [2022-01-31 02:30:56,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:30:56,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 02:30:56,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:30:56,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 02:30:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1446, Invalid=2094, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 02:30:56,269 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) [2022-01-31 02:30:57,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:30:57,531 INFO L93 Difference]: Finished difference Result 430 states and 432 transitions. [2022-01-31 02:30:57,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 02:30:57,532 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 [2022-01-31 02:30:57,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:30:57,533 INFO L225 Difference]: With dead ends: 430 [2022-01-31 02:30:57,533 INFO L226 Difference]: Without dead ends: 428 [2022-01-31 02:30:57,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1092 GetRequests, 976 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2354 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4330, Invalid=9010, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 02:30:57,534 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 135 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:30:57,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 65 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:30:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-31 02:30:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 424. [2022-01-31 02:30:57,582 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) [2022-01-31 02:30:57,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 425 transitions. [2022-01-31 02:30:57,582 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 425 transitions. Word has length 414 [2022-01-31 02:30:57,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:30:57,583 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 425 transitions. [2022-01-31 02:30:57,583 INFO L471 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) [2022-01-31 02:30:57,583 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 425 transitions. [2022-01-31 02:30:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-01-31 02:30:57,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:30:57,590 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:30:57,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-01-31 02:30:57,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-01-31 02:30:57,791 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:30:57,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:30:57,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1129996390, now seen corresponding path program 101 times [2022-01-31 02:30:57,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:30:57,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682315966] [2022-01-31 02:30:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:30:57,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:30:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:31:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-31 02:31:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:31:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:31:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:31:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:31:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:31:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:31:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:31:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:31:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:31:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:31:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:31:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:31:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:31:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:31:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:31:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:31:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:31:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:31:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:31:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:31:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:31:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:31:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:31:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:31:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:31:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:31:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 02:31:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 02:31:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 02:31:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 02:31:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 02:31:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 02:31:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 02:31:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 02:31:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 02:31:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 02:31:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 02:31:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 02:31:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 02:31:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 02:31:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 02:31:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 02:31:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 02:31:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 02:31:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 02:31:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 02:31:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 02:31:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 02:31:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 02:31:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 02:31:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-01-31 02:31:00,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:31:00,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682315966] [2022-01-31 02:31:00,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682315966] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:31:00,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585210265] [2022-01-31 02:31:00,492 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:31:00,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:00,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:31:00,494 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) [2022-01-31 02:31:00,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-31 02:31:00,682 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2022-01-31 02:31:00,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:31:00,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 106 conjunts are in the unsatisfiable core [2022-01-31 02:31:00,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:31:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-01-31 02:31:01,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:31:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-01-31 02:31:01,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585210265] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:31:01,884 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:31:01,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107, 107] total 109 [2022-01-31 02:31:01,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229984990] [2022-01-31 02:31:01,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:31:01,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-01-31 02:31:01,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:31:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-01-31 02:31:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2919, Invalid=8853, Unknown=0, NotChecked=0, Total=11772 [2022-01-31 02:31:01,885 INFO L87 Difference]: Start difference. First operand 424 states and 425 transitions. Second operand has 109 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 108 states have internal predecessors, (168), 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) [2022-01-31 02:31:05,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:31:05,441 INFO L93 Difference]: Finished difference Result 589 states and 642 transitions. [2022-01-31 02:31:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-31 02:31:05,441 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 108 states have internal predecessors, (168), 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 421 [2022-01-31 02:31:05,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:31:05,442 INFO L225 Difference]: With dead ends: 589 [2022-01-31 02:31:05,442 INFO L226 Difference]: Without dead ends: 425 [2022-01-31 02:31:05,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1157 GetRequests, 944 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11119 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8854, Invalid=36728, Unknown=0, NotChecked=0, Total=45582 [2022-01-31 02:31:05,445 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:31:05,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 104 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:31:05,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-01-31 02:31:05,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2022-01-31 02:31:05,499 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) [2022-01-31 02:31:05,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2022-01-31 02:31:05,500 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 421 [2022-01-31 02:31:05,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:31:05,500 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2022-01-31 02:31:05,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 1.5412844036697249) internal successors, (168), 108 states have internal predecessors, (168), 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) [2022-01-31 02:31:05,500 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2022-01-31 02:31:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-01-31 02:31:05,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:31:05,501 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:31:05,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-01-31 02:31:05,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-01-31 02:31:05,702 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:31:05,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:31:05,702 INFO L85 PathProgramCache]: Analyzing trace with hash -620280372, now seen corresponding path program 102 times [2022-01-31 02:31:05,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:31:05,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503892488] [2022-01-31 02:31:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:31:05,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:31:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:31:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:31:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:31:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:31:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:31:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:31:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:31:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:31:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:31:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:31:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:31:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:31:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:31:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:31:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:31:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:31:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:31:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:31:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:31:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:31:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:31:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:31:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:31:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:31:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:31:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:31:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:31:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:31:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:31:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 02:31:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 02:31:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 02:31:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 02:31:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 02:31:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 02:31:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 02:31:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 02:31:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 02:31:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 02:31:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 02:31:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 02:31:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 02:31:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 02:31:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 02:31:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 02:31:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 02:31:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 02:31:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 02:31:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 02:31:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 02:31:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 02:31:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 02:31:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1428 proven. 3979 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-01-31 02:31:06,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:31:06,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503892488] [2022-01-31 02:31:06,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503892488] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:31:06,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178138832] [2022-01-31 02:31:06,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:31:06,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:06,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:31:06,884 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) [2022-01-31 02:31:06,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-31 02:31:07,090 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2022-01-31 02:31:07,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:31:07,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 107 conjunts are in the unsatisfiable core [2022-01-31 02:31:07,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:31:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-01-31 02:31:07,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:31:08,284 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-01-31 02:31:08,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178138832] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:31:08,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:31:08,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 61 [2022-01-31 02:31:08,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044570028] [2022-01-31 02:31:08,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:31:08,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-31 02:31:08,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:31:08,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-31 02:31:08,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1500, Invalid=2160, Unknown=0, NotChecked=0, Total=3660 [2022-01-31 02:31:08,286 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) [2022-01-31 02:31:09,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:31:09,581 INFO L93 Difference]: Finished difference Result 438 states and 440 transitions. [2022-01-31 02:31:09,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-31 02:31:09,582 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 [2022-01-31 02:31:09,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:31:09,583 INFO L225 Difference]: With dead ends: 438 [2022-01-31 02:31:09,583 INFO L226 Difference]: Without dead ends: 436 [2022-01-31 02:31:09,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 995 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2426 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4492, Invalid=9314, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 02:31:09,584 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 133 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:31:09,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 55 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:31:09,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-01-31 02:31:09,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 432. [2022-01-31 02:31:09,638 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) [2022-01-31 02:31:09,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 433 transitions. [2022-01-31 02:31:09,639 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 433 transitions. Word has length 422 [2022-01-31 02:31:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:31:09,639 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 433 transitions. [2022-01-31 02:31:09,639 INFO L471 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) [2022-01-31 02:31:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 433 transitions. [2022-01-31 02:31:09,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-01-31 02:31:09,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:31:09,641 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:31:09,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-01-31 02:31:09,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-01-31 02:31:09,841 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:31:09,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:31:09,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2027037863, now seen corresponding path program 103 times [2022-01-31 02:31:09,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:31:09,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111353613] [2022-01-31 02:31:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:31:09,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:31:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:31:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-01-31 02:31:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:31:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:31:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:31:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:31:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:31:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:31:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:31:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:31:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:31:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:31:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:31:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:31:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:31:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:31:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:31:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:31:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:31:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:31:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:31:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:31:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:31:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:31:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:31:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:31:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:31:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:31:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:31:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 02:31:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 02:31:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 02:31:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 02:31:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 02:31:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 02:31:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 02:31:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 02:31:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 02:31:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 02:31:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 02:31:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 02:31:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 02:31:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 02:31:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 02:31:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 02:31:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 02:31:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 02:31:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 02:31:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 02:31:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 02:31:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 02:31:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 02:31:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 02:31:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-01-31 02:31:12,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:31:12,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111353613] [2022-01-31 02:31:12,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111353613] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:31:12,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73454935] [2022-01-31 02:31:12,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:31:12,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:12,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:31:12,639 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) [2022-01-31 02:31:12,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-31 02:31:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:12,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 108 conjunts are in the unsatisfiable core [2022-01-31 02:31:12,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:31:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-01-31 02:31:13,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:31:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-01-31 02:31:13,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73454935] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:31:13,968 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:31:13,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109, 109] total 111 [2022-01-31 02:31:13,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433092040] [2022-01-31 02:31:13,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:31:13,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-01-31 02:31:13,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:31:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-01-31 02:31:13,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3028, Invalid=9182, Unknown=0, NotChecked=0, Total=12210 [2022-01-31 02:31:13,970 INFO L87 Difference]: Start difference. First operand 432 states and 433 transitions. Second operand has 111 states, 111 states have (on average 1.5405405405405406) internal successors, (171), 110 states have internal predecessors, (171), 54 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 02:31:17,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:31:17,797 INFO L93 Difference]: Finished difference Result 600 states and 654 transitions. [2022-01-31 02:31:17,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-31 02:31:17,797 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 1.5405405405405406) internal successors, (171), 110 states have internal predecessors, (171), 54 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Word has length 429 [2022-01-31 02:31:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:31:17,798 INFO L225 Difference]: With dead ends: 600 [2022-01-31 02:31:17,798 INFO L226 Difference]: Without dead ends: 433 [2022-01-31 02:31:17,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1179 GetRequests, 962 SyntacticMatches, 1 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11545 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=9183, Invalid=38123, Unknown=0, NotChecked=0, Total=47306 [2022-01-31 02:31:17,801 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 19 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2042 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 2042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 02:31:17,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 120 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 2042 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 02:31:17,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-01-31 02:31:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2022-01-31 02:31:17,846 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) [2022-01-31 02:31:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 434 transitions. [2022-01-31 02:31:17,846 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 434 transitions. Word has length 429 [2022-01-31 02:31:17,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:31:17,846 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 434 transitions. [2022-01-31 02:31:17,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 1.5405405405405406) internal successors, (171), 110 states have internal predecessors, (171), 54 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-01-31 02:31:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 434 transitions. [2022-01-31 02:31:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-01-31 02:31:17,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:31:17,848 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:31:17,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-01-31 02:31:18,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:18,049 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:31:18,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:31:18,049 INFO L85 PathProgramCache]: Analyzing trace with hash -284277747, now seen corresponding path program 104 times [2022-01-31 02:31:18,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:31:18,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762810130] [2022-01-31 02:31:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:31:18,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:31:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:31:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:31:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:31:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:31:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:31:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:31:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:31:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:31:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:31:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:31:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:31:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:31:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:31:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:31:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:31:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:31:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:31:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:31:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:31:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:31:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:31:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:31:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:31:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:31:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:31:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:31:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:31:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:31:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:31:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:31:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 02:31:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 02:31:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 02:31:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 02:31:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 02:31:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 02:31:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 02:31:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 02:31:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 02:31:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 02:31:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 02:31:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 02:31:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 02:31:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 02:31:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 02:31:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 02:31:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 02:31:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 02:31:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 02:31:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 02:31:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 02:31:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 02:31:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 02:31:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10921 backedges. 1482 proven. 4135 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-01-31 02:31:19,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:31:19,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762810130] [2022-01-31 02:31:19,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762810130] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:31:19,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038832060] [2022-01-31 02:31:19,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:31:19,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:19,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:31:19,246 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) [2022-01-31 02:31:19,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-31 02:31:19,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:31:19,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:31:19,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 109 conjunts are in the unsatisfiable core [2022-01-31 02:31:19,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:31:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10921 backedges. 1535 proven. 4082 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-01-31 02:31:19,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:31:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 10921 backedges. 1535 proven. 4082 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-01-31 02:31:20,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038832060] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:31:20,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:31:20,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 62 [2022-01-31 02:31:20,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049029704] [2022-01-31 02:31:20,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:31:20,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-31 02:31:20,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:31:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-31 02:31:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1555, Invalid=2227, Unknown=0, NotChecked=0, Total=3782 [2022-01-31 02:31:20,586 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) [2022-01-31 02:31:21,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:31:21,959 INFO L93 Difference]: Finished difference Result 446 states and 448 transitions. [2022-01-31 02:31:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-31 02:31:21,960 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 [2022-01-31 02:31:21,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:31:21,961 INFO L225 Difference]: With dead ends: 446 [2022-01-31 02:31:21,961 INFO L226 Difference]: Without dead ends: 444 [2022-01-31 02:31:21,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1014 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4657, Invalid=9623, Unknown=0, NotChecked=0, Total=14280 [2022-01-31 02:31:21,962 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 135 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:31:21,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 65 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:31:21,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-01-31 02:31:22,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 440. [2022-01-31 02:31:22,008 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) [2022-01-31 02:31:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 441 transitions. [2022-01-31 02:31:22,009 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 441 transitions. Word has length 430 [2022-01-31 02:31:22,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:31:22,009 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 441 transitions. [2022-01-31 02:31:22,010 INFO L471 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) [2022-01-31 02:31:22,010 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 441 transitions. [2022-01-31 02:31:22,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-01-31 02:31:22,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:31:22,011 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:31:22,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-01-31 02:31:22,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-01-31 02:31:22,212 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:31:22,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:31:22,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1128412346, now seen corresponding path program 105 times [2022-01-31 02:31:22,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:31:22,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212162321] [2022-01-31 02:31:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:31:22,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:31:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:31:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-31 02:31:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:31:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:31:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:31:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:31:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:31:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:31:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:31:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:31:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:31:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:31:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:31:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:31:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:31:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:31:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:31:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:31:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:31:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:31:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:31:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:31:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:31:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:31:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:31:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:31:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:31:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:31:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:31:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:31:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 02:31:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 02:31:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 02:31:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 02:31:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 02:31:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 02:31:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 02:31:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 02:31:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 02:31:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 02:31:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 02:31:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 02:31:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 02:31:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 02:31:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 02:31:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 02:31:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 02:31:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 02:31:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 02:31:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 02:31:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 02:31:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 02:31:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 02:31:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 02:31:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11289 backedges. 4346 proven. 1431 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-01-31 02:31:25,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:31:25,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212162321] [2022-01-31 02:31:25,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212162321] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:31:25,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733646930] [2022-01-31 02:31:25,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:31:25,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:25,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:31:25,121 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) [2022-01-31 02:31:25,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-31 02:31:25,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2022-01-31 02:31:25,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:31:25,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 110 conjunts are in the unsatisfiable core [2022-01-31 02:31:25,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:31:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11289 backedges. 4346 proven. 1431 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-01-31 02:31:25,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:31:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11289 backedges. 4346 proven. 1431 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-01-31 02:31:26,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733646930] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:31:26,559 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:31:26,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 111, 111] total 113 [2022-01-31 02:31:26,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047815311] [2022-01-31 02:31:26,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:31:26,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-01-31 02:31:26,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:31:26,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-01-31 02:31:26,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=9517, Unknown=0, NotChecked=0, Total=12656 [2022-01-31 02:31:26,561 INFO L87 Difference]: Start difference. First operand 440 states and 441 transitions. Second operand has 113 states, 113 states have (on average 1.5398230088495575) internal successors, (174), 112 states have internal predecessors, (174), 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) [2022-01-31 02:31:30,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:31:30,699 INFO L93 Difference]: Finished difference Result 611 states and 666 transitions. [2022-01-31 02:31:30,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-31 02:31:30,700 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.5398230088495575) internal successors, (174), 112 states have internal predecessors, (174), 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 437 [2022-01-31 02:31:30,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:31:30,701 INFO L225 Difference]: With dead ends: 611 [2022-01-31 02:31:30,701 INFO L226 Difference]: Without dead ends: 441 [2022-01-31 02:31:30,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1201 GetRequests, 980 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11979 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9518, Invalid=39544, Unknown=0, NotChecked=0, Total=49062 [2022-01-31 02:31:30,717 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 19 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 02:31:30,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 141 Invalid, 3005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 2782 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 02:31:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-01-31 02:31:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-01-31 02:31:30,764 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) [2022-01-31 02:31:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2022-01-31 02:31:30,764 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 437 [2022-01-31 02:31:30,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:31:30,764 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2022-01-31 02:31:30,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.5398230088495575) internal successors, (174), 112 states have internal predecessors, (174), 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) [2022-01-31 02:31:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2022-01-31 02:31:30,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-01-31 02:31:30,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:31:30,766 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:31:30,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-01-31 02:31:30,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-01-31 02:31:30,967 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:31:30,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:31:30,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1817238356, now seen corresponding path program 106 times [2022-01-31 02:31:30,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:31:30,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759258460] [2022-01-31 02:31:30,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:31:30,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:31:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:31:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:31:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:31:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:31:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:31:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:31:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:31:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:31:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:31:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:31:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:31:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:31:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:31:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:31:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:31:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:31:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:31:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:31:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:31:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:31:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:31:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:31:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:31:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 02:31:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 02:31:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 02:31:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 02:31:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 02:31:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 02:31:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 02:31:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 02:31:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 02:31:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 02:31:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 02:31:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 02:31:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 02:31:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 02:31:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 02:31:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 02:31:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 02:31:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 02:31:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 02:31:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 02:31:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 02:31:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 02:31:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 02:31:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 02:31:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 02:31:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 02:31:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 02:31:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 02:31:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 02:31:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 02:31:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 02:31:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 1537 proven. 4294 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-01-31 02:31:32,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:31:32,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759258460] [2022-01-31 02:31:32,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759258460] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:31:32,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684621941] [2022-01-31 02:31:32,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:31:32,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:32,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:31:32,202 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) [2022-01-31 02:31:32,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-31 02:31:32,339 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:31:32,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:31:32,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 111 conjunts are in the unsatisfiable core [2022-01-31 02:31:32,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:31:32,946 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 1591 proven. 4240 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-01-31 02:31:32,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:31:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 1591 proven. 4240 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-01-31 02:31:33,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684621941] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:31:33,588 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:31:33,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 63 [2022-01-31 02:31:33,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638527084] [2022-01-31 02:31:33,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:31:33,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-31 02:31:33,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:31:33,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-31 02:31:33,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1611, Invalid=2295, Unknown=0, NotChecked=0, Total=3906 [2022-01-31 02:31:33,589 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) [2022-01-31 02:31:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:31:35,003 INFO L93 Difference]: Finished difference Result 454 states and 456 transitions. [2022-01-31 02:31:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-31 02:31:35,004 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 [2022-01-31 02:31:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:31:35,004 INFO L225 Difference]: With dead ends: 454 [2022-01-31 02:31:35,005 INFO L226 Difference]: Without dead ends: 452 [2022-01-31 02:31:35,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1155 GetRequests, 1033 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2573 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4825, Invalid=9937, Unknown=0, NotChecked=0, Total=14762 [2022-01-31 02:31:35,006 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 137 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:31:35,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 60 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:31:35,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-01-31 02:31:35,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 448. [2022-01-31 02:31:35,054 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) [2022-01-31 02:31:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 449 transitions. [2022-01-31 02:31:35,055 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 449 transitions. Word has length 438 [2022-01-31 02:31:35,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:31:35,056 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 449 transitions. [2022-01-31 02:31:35,056 INFO L471 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) [2022-01-31 02:31:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 449 transitions. [2022-01-31 02:31:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-01-31 02:31:35,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:31:35,058 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:31:35,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-01-31 02:31:35,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:35,281 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:31:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:31:35,282 INFO L85 PathProgramCache]: Analyzing trace with hash 809224647, now seen corresponding path program 107 times [2022-01-31 02:31:35,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:31:35,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827970963] [2022-01-31 02:31:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:31:35,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:31:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:31:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-31 02:31:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:31:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:31:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:31:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:31:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:31:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:31:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:31:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:31:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:31:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:31:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:31:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:31:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:31:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:31:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:31:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:31:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:31:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:31:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:31:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:31:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:31:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 02:31:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 02:31:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 02:31:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 02:31:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 02:31:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 02:31:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 02:31:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 02:31:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 02:31:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 02:31:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 02:31:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 02:31:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 02:31:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 02:31:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 02:31:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 02:31:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 02:31:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 02:31:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 02:31:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 02:31:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 02:31:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 02:31:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 02:31:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 02:31:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 02:31:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 02:31:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 02:31:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 02:31:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 02:31:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 02:31:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 02:31:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 02:31:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 4509 proven. 1485 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-01-31 02:31:38,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:31:38,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827970963] [2022-01-31 02:31:38,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827970963] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:31:38,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120560446] [2022-01-31 02:31:38,289 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:31:38,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:38,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:31:38,290 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) [2022-01-31 02:31:38,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-01-31 02:31:38,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2022-01-31 02:31:38,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:31:38,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 112 conjunts are in the unsatisfiable core [2022-01-31 02:31:38,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:31:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 4509 proven. 1485 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-01-31 02:31:39,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:31:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 4509 proven. 1485 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-01-31 02:31:39,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120560446] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:31:39,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:31:39,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 113, 113] total 115 [2022-01-31 02:31:39,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024416145] [2022-01-31 02:31:39,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:31:39,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-01-31 02:31:39,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:31:39,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-01-31 02:31:39,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3252, Invalid=9858, Unknown=0, NotChecked=0, Total=13110 [2022-01-31 02:31:39,735 INFO L87 Difference]: Start difference. First operand 448 states and 449 transitions. Second operand has 115 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 114 states have internal predecessors, (177), 56 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 02:31:43,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:31:43,772 INFO L93 Difference]: Finished difference Result 622 states and 678 transitions. [2022-01-31 02:31:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-31 02:31:43,773 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 114 states have internal predecessors, (177), 56 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 445 [2022-01-31 02:31:43,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:31:43,774 INFO L225 Difference]: With dead ends: 622 [2022-01-31 02:31:43,774 INFO L226 Difference]: Without dead ends: 449 [2022-01-31 02:31:43,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1223 GetRequests, 998 SyntacticMatches, 1 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12421 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=9859, Invalid=40991, Unknown=0, NotChecked=0, Total=50850 [2022-01-31 02:31:43,777 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 02:31:43,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 112 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 02:31:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-01-31 02:31:43,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2022-01-31 02:31:43,834 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) [2022-01-31 02:31:43,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 450 transitions. [2022-01-31 02:31:43,835 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 450 transitions. Word has length 445 [2022-01-31 02:31:43,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:31:43,835 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 450 transitions. [2022-01-31 02:31:43,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 114 states have internal predecessors, (177), 56 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 02:31:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 450 transitions. [2022-01-31 02:31:43,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-01-31 02:31:43,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:31:43,837 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:31:43,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-01-31 02:31:44,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:44,038 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:31:44,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:31:44,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1678269741, now seen corresponding path program 108 times [2022-01-31 02:31:44,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:31:44,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645291320] [2022-01-31 02:31:44,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:31:44,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:31:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:31:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:31:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:31:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:31:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:31:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:31:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:31:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:31:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:31:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:31:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:31:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:31:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:31:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:31:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:31:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:31:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:31:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:31:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:31:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:31:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:31:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:31:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:31:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:31:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 02:31:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 02:31:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 02:31:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 02:31:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 02:31:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 02:31:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 02:31:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 02:31:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 02:31:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 02:31:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 02:31:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 02:31:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 02:31:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 02:31:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 02:31:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 02:31:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 02:31:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 02:31:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 02:31:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 02:31:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 02:31:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 02:31:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 02:31:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 02:31:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 02:31:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 02:31:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 02:31:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 02:31:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 02:31:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 02:31:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 02:31:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11773 backedges. 1593 proven. 4456 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-01-31 02:31:45,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:31:45,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645291320] [2022-01-31 02:31:45,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645291320] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:31:45,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476786241] [2022-01-31 02:31:45,311 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:31:45,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:45,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:31:45,312 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) [2022-01-31 02:31:45,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-01-31 02:31:45,524 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2022-01-31 02:31:45,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:31:45,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 113 conjunts are in the unsatisfiable core [2022-01-31 02:31:45,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:31:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 11773 backedges. 1648 proven. 4401 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-01-31 02:31:46,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:31:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 11773 backedges. 1648 proven. 4401 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-01-31 02:31:46,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476786241] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:31:46,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:31:46,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 60] total 64 [2022-01-31 02:31:46,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527360216] [2022-01-31 02:31:46,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:31:46,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-31 02:31:46,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:31:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-31 02:31:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1668, Invalid=2364, Unknown=0, NotChecked=0, Total=4032 [2022-01-31 02:31:46,783 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) [2022-01-31 02:31:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:31:48,207 INFO L93 Difference]: Finished difference Result 462 states and 464 transitions. [2022-01-31 02:31:48,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-31 02:31:48,208 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 [2022-01-31 02:31:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:31:48,209 INFO L225 Difference]: With dead ends: 462 [2022-01-31 02:31:48,209 INFO L226 Difference]: Without dead ends: 460 [2022-01-31 02:31:48,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1052 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4996, Invalid=10256, Unknown=0, NotChecked=0, Total=15252 [2022-01-31 02:31:48,210 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 143 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:31:48,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 55 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:31:48,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-31 02:31:48,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 456. [2022-01-31 02:31:48,294 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) [2022-01-31 02:31:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 457 transitions. [2022-01-31 02:31:48,295 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 457 transitions. Word has length 446 [2022-01-31 02:31:48,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:31:48,295 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 457 transitions. [2022-01-31 02:31:48,295 INFO L471 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) [2022-01-31 02:31:48,295 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 457 transitions. [2022-01-31 02:31:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-01-31 02:31:48,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:31:48,297 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:31:48,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-01-31 02:31:48,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2022-01-31 02:31:48,511 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:31:48,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:31:48,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1811206618, now seen corresponding path program 109 times [2022-01-31 02:31:48,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:31:48,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548328178] [2022-01-31 02:31:48,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:31:48,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:31:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:31:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-31 02:31:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:31:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:31:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:31:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:31:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:31:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:31:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:31:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:31:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:31:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:31:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:31:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:31:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:31:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:31:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:31:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:31:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:31:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:31:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:31:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:31:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:31:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:31:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 02:31:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 02:31:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 02:31:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 02:31:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 02:31:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 02:31:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 02:31:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 02:31:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 02:31:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 02:31:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 02:31:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 02:31:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 02:31:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 02:31:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 02:31:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 02:31:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 02:31:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 02:31:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 02:31:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 02:31:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 02:31:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 02:31:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 02:31:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 02:31:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 02:31:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 02:31:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 02:31:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 02:31:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 02:31:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 02:31:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 02:31:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 02:31:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 12155 backedges. 4675 proven. 1540 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-01-31 02:31:51,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:31:51,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548328178] [2022-01-31 02:31:51,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548328178] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:31:51,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65344974] [2022-01-31 02:31:51,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:31:51,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:51,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:31:51,621 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) [2022-01-31 02:31:51,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-01-31 02:31:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:51,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 114 conjunts are in the unsatisfiable core [2022-01-31 02:31:51,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:31:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12155 backedges. 4675 proven. 1540 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-01-31 02:31:52,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:31:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12155 backedges. 4675 proven. 1540 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-01-31 02:31:53,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65344974] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:31:53,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:31:53,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 115, 115] total 117 [2022-01-31 02:31:53,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303665224] [2022-01-31 02:31:53,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:31:53,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-01-31 02:31:53,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:31:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-01-31 02:31:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=10205, Unknown=0, NotChecked=0, Total=13572 [2022-01-31 02:31:53,037 INFO L87 Difference]: Start difference. First operand 456 states and 457 transitions. Second operand has 117 states, 117 states have (on average 1.5384615384615385) internal successors, (180), 116 states have internal predecessors, (180), 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) [2022-01-31 02:31:57,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:31:57,360 INFO L93 Difference]: Finished difference Result 633 states and 690 transitions. [2022-01-31 02:31:57,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-31 02:31:57,360 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 1.5384615384615385) internal successors, (180), 116 states have internal predecessors, (180), 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 453 [2022-01-31 02:31:57,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:31:57,361 INFO L225 Difference]: With dead ends: 633 [2022-01-31 02:31:57,361 INFO L226 Difference]: Without dead ends: 457 [2022-01-31 02:31:57,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 1016 SyntacticMatches, 1 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12871 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=10206, Invalid=42464, Unknown=0, NotChecked=0, Total=52670 [2022-01-31 02:31:57,365 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 19 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 02:31:57,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 133 Invalid, 2899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 02:31:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-01-31 02:31:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2022-01-31 02:31:57,431 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) [2022-01-31 02:31:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 458 transitions. [2022-01-31 02:31:57,432 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 458 transitions. Word has length 453 [2022-01-31 02:31:57,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:31:57,432 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 458 transitions. [2022-01-31 02:31:57,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 1.5384615384615385) internal successors, (180), 116 states have internal predecessors, (180), 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) [2022-01-31 02:31:57,432 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 458 transitions. [2022-01-31 02:31:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-01-31 02:31:57,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:31:57,434 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:31:57,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-01-31 02:31:57,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:57,635 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:31:57,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:31:57,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1697055860, now seen corresponding path program 110 times [2022-01-31 02:31:57,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:31:57,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778376814] [2022-01-31 02:31:57,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:31:57,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:31:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:31:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:31:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:31:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:31:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:31:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:31:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:31:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:31:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:31:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:31:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:31:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:31:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:31:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:31:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:31:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:31:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:31:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:31:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:31:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:31:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:31:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:31:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:31:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:31:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:31:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 02:31:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 02:31:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 02:31:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 02:31:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 02:31:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 02:31:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 02:31:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 02:31:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 02:31:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 02:31:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 02:31:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 02:31:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 02:31:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 02:31:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 02:31:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 02:31:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 02:31:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 02:31:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 02:31:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 02:31:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 02:31:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 02:31:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 02:31:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 02:31:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 02:31:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 02:31:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 02:31:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 02:31:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 02:31:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 02:31:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 02:31:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:31:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12211 backedges. 1650 proven. 4621 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-01-31 02:31:58,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:31:58,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778376814] [2022-01-31 02:31:58,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778376814] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:31:58,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858605285] [2022-01-31 02:31:58,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:31:58,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:31:58,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:31:58,978 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) [2022-01-31 02:31:58,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-01-31 02:31:59,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:31:59,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:31:59,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 115 conjunts are in the unsatisfiable core [2022-01-31 02:31:59,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:31:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12211 backedges. 1706 proven. 4565 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-01-31 02:31:59,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:32:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 12211 backedges. 1706 proven. 4565 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-01-31 02:32:00,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858605285] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:32:00,400 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:32:00,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 65 [2022-01-31 02:32:00,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789326991] [2022-01-31 02:32:00,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:32:00,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-01-31 02:32:00,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:32:00,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-01-31 02:32:00,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1726, Invalid=2434, Unknown=0, NotChecked=0, Total=4160 [2022-01-31 02:32:00,402 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) [2022-01-31 02:32:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:32:01,854 INFO L93 Difference]: Finished difference Result 470 states and 472 transitions. [2022-01-31 02:32:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-31 02:32:01,854 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 [2022-01-31 02:32:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:32:01,855 INFO L225 Difference]: With dead ends: 470 [2022-01-31 02:32:01,855 INFO L226 Difference]: Without dead ends: 468 [2022-01-31 02:32:01,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1071 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2724 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5170, Invalid=10580, Unknown=0, NotChecked=0, Total=15750 [2022-01-31 02:32:01,857 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 145 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:32:01,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 50 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:32:01,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-01-31 02:32:01,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 464. [2022-01-31 02:32:01,921 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) [2022-01-31 02:32:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 465 transitions. [2022-01-31 02:32:01,921 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 465 transitions. Word has length 454 [2022-01-31 02:32:01,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:32:01,922 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 465 transitions. [2022-01-31 02:32:01,922 INFO L471 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) [2022-01-31 02:32:01,922 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 465 transitions. [2022-01-31 02:32:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2022-01-31 02:32:01,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:32:01,924 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:32:01,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-01-31 02:32:02,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-01-31 02:32:02,147 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:32:02,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:32:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1719896345, now seen corresponding path program 111 times [2022-01-31 02:32:02,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:32:02,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318691482] [2022-01-31 02:32:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:32:02,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:32:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:32:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-01-31 02:32:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:32:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:32:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:32:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:32:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:32:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:32:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:32:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:32:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:32:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:32:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:32:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:32:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:32:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:32:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:32:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:32:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:32:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:32:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:32:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:32:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:32:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:32:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:32:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 02:32:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 02:32:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 02:32:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 02:32:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 02:32:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 02:32:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 02:32:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 02:32:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 02:32:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 02:32:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 02:32:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 02:32:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 02:32:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 02:32:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 02:32:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 02:32:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 02:32:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 02:32:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 02:32:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 02:32:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 02:32:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 02:32:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 02:32:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 02:32:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 02:32:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 02:32:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 02:32:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 02:32:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 02:32:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 02:32:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 02:32:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 02:32:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 4844 proven. 1596 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-01-31 02:32:05,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:32:05,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318691482] [2022-01-31 02:32:05,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318691482] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:32:05,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307113009] [2022-01-31 02:32:05,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:32:05,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:32:05,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:32:05,365 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) [2022-01-31 02:32:05,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-01-31 02:32:05,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2022-01-31 02:32:05,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:32:05,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 116 conjunts are in the unsatisfiable core [2022-01-31 02:32:05,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:32:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 4844 proven. 1596 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-01-31 02:32:06,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:32:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 4844 proven. 1596 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-01-31 02:32:06,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307113009] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:32:06,889 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:32:06,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 117, 117] total 119 [2022-01-31 02:32:06,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326469150] [2022-01-31 02:32:06,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:32:06,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-01-31 02:32:06,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:32:06,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-01-31 02:32:06,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3484, Invalid=10558, Unknown=0, NotChecked=0, Total=14042 [2022-01-31 02:32:06,891 INFO L87 Difference]: Start difference. First operand 464 states and 465 transitions. Second operand has 119 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 118 states have internal predecessors, (183), 58 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 02:32:11,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:32:11,421 INFO L93 Difference]: Finished difference Result 644 states and 702 transitions. [2022-01-31 02:32:11,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-31 02:32:11,422 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 118 states have internal predecessors, (183), 58 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 461 [2022-01-31 02:32:11,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:32:11,423 INFO L225 Difference]: With dead ends: 644 [2022-01-31 02:32:11,423 INFO L226 Difference]: Without dead ends: 465 [2022-01-31 02:32:11,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 1034 SyntacticMatches, 1 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13329 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=10559, Invalid=43963, Unknown=0, NotChecked=0, Total=54522 [2022-01-31 02:32:11,427 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 19 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2876 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 2876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 02:32:11,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 134 Invalid, 3110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 2876 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 02:32:11,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-01-31 02:32:11,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2022-01-31 02:32:11,491 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) [2022-01-31 02:32:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 466 transitions. [2022-01-31 02:32:11,491 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 466 transitions. Word has length 461 [2022-01-31 02:32:11,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:32:11,491 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 466 transitions. [2022-01-31 02:32:11,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.5378151260504203) internal successors, (183), 118 states have internal predecessors, (183), 58 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-01-31 02:32:11,492 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 466 transitions. [2022-01-31 02:32:11,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-01-31 02:32:11,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:32:11,494 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:32:11,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-01-31 02:32:11,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-01-31 02:32:11,694 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:32:11,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:32:11,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1668382285, now seen corresponding path program 112 times [2022-01-31 02:32:11,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:32:11,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142184356] [2022-01-31 02:32:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:32:11,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:32:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:12,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:32:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:12,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:32:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:12,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:32:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:12,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:32:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:12,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:32:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:32:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:12,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:32:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:12,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:32:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:12,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:32:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:32:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:12,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:32:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:32:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:32:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:32:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:32:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:32:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:32:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:32:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:32:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:32:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:32:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:32:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:32:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:32:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:32:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:32:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 02:32:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 02:32:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 02:32:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 02:32:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 02:32:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 02:32:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 02:32:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 02:32:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 02:32:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 02:32:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 02:32:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 02:32:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 02:32:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 02:32:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 02:32:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 02:32:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 02:32:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 02:32:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 02:32:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 02:32:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 02:32:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 02:32:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 02:32:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 02:32:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 02:32:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 02:32:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 02:32:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 02:32:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 02:32:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 02:32:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 02:32:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12657 backedges. 1708 proven. 4789 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-01-31 02:32:13,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:32:13,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142184356] [2022-01-31 02:32:13,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142184356] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:32:13,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933944133] [2022-01-31 02:32:13,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:32:13,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:32:13,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:32:13,056 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) [2022-01-31 02:32:13,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-01-31 02:32:13,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:32:13,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:32:13,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 117 conjunts are in the unsatisfiable core [2022-01-31 02:32:13,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:32:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12657 backedges. 1765 proven. 4732 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-01-31 02:32:13,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:32:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 12657 backedges. 1765 proven. 4732 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-01-31 02:32:14,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933944133] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:32:14,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:32:14,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 62] total 66 [2022-01-31 02:32:14,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891101948] [2022-01-31 02:32:14,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:32:14,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-31 02:32:14,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:32:14,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-31 02:32:14,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1785, Invalid=2505, Unknown=0, NotChecked=0, Total=4290 [2022-01-31 02:32:14,524 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) [2022-01-31 02:32:15,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:32:15,989 INFO L93 Difference]: Finished difference Result 478 states and 480 transitions. [2022-01-31 02:32:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-31 02:32:15,989 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 [2022-01-31 02:32:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:32:15,990 INFO L225 Difference]: With dead ends: 478 [2022-01-31 02:32:15,990 INFO L226 Difference]: Without dead ends: 476 [2022-01-31 02:32:15,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1218 GetRequests, 1090 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2801 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5347, Invalid=10909, Unknown=0, NotChecked=0, Total=16256 [2022-01-31 02:32:15,991 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 150 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:32:15,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 50 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:32:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-01-31 02:32:16,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 472. [2022-01-31 02:32:16,042 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) [2022-01-31 02:32:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 473 transitions. [2022-01-31 02:32:16,043 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 473 transitions. Word has length 462 [2022-01-31 02:32:16,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:32:16,044 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 473 transitions. [2022-01-31 02:32:16,044 INFO L471 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) [2022-01-31 02:32:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 473 transitions. [2022-01-31 02:32:16,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-01-31 02:32:16,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:32:16,045 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:32:16,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-01-31 02:32:16,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:32:16,246 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:32:16,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:32:16,246 INFO L85 PathProgramCache]: Analyzing trace with hash 527468806, now seen corresponding path program 113 times [2022-01-31 02:32:16,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:32:16,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516252245] [2022-01-31 02:32:16,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:32:16,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:32:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:32:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-01-31 02:32:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:32:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:32:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:32:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:32:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:32:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:32:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:32:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:32:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:32:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:32:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:32:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:32:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:32:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:32:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:32:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:32:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:32:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:32:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:32:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:32:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:32:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:32:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:32:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:32:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 02:32:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 02:32:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 02:32:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 02:32:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 02:32:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 02:32:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 02:32:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 02:32:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 02:32:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 02:32:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 02:32:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 02:32:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 02:32:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 02:32:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 02:32:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 02:32:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 02:32:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 02:32:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 02:32:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 02:32:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 02:32:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 02:32:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 02:32:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 02:32:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 02:32:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 02:32:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 02:32:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 02:32:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 02:32:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 02:32:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 02:32:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 02:32:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 13053 backedges. 5016 proven. 1653 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-01-31 02:32:19,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:32:19,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516252245] [2022-01-31 02:32:19,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516252245] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:32:19,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551550805] [2022-01-31 02:32:19,651 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:32:19,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:32:19,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:32:19,652 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) [2022-01-31 02:32:19,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-01-31 02:32:19,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2022-01-31 02:32:19,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:32:19,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 118 conjunts are in the unsatisfiable core [2022-01-31 02:32:19,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:32:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13053 backedges. 5016 proven. 1653 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-01-31 02:32:20,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:32:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 13053 backedges. 5016 proven. 1653 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-01-31 02:32:21,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551550805] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:32:21,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:32:21,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 119, 119] total 121 [2022-01-31 02:32:21,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086887501] [2022-01-31 02:32:21,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:32:21,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-01-31 02:32:21,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:32:21,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-01-31 02:32:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3603, Invalid=10917, Unknown=0, NotChecked=0, Total=14520 [2022-01-31 02:32:21,185 INFO L87 Difference]: Start difference. First operand 472 states and 473 transitions. Second operand has 121 states, 121 states have (on average 1.537190082644628) internal successors, (186), 120 states have internal predecessors, (186), 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) [2022-01-31 02:32:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:32:25,770 INFO L93 Difference]: Finished difference Result 655 states and 714 transitions. [2022-01-31 02:32:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-31 02:32:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 1.537190082644628) internal successors, (186), 120 states have internal predecessors, (186), 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 469 [2022-01-31 02:32:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:32:25,772 INFO L225 Difference]: With dead ends: 655 [2022-01-31 02:32:25,772 INFO L226 Difference]: Without dead ends: 473 [2022-01-31 02:32:25,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1289 GetRequests, 1052 SyntacticMatches, 1 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13795 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=10918, Invalid=45488, Unknown=0, NotChecked=0, Total=56406 [2022-01-31 02:32:25,774 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 19 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 02:32:25,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 140 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 02:32:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-01-31 02:32:25,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2022-01-31 02:32:25,832 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) [2022-01-31 02:32:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 474 transitions. [2022-01-31 02:32:25,832 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 474 transitions. Word has length 469 [2022-01-31 02:32:25,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:32:25,833 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 474 transitions. [2022-01-31 02:32:25,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 1.537190082644628) internal successors, (186), 120 states have internal predecessors, (186), 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) [2022-01-31 02:32:25,833 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 474 transitions. [2022-01-31 02:32:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-01-31 02:32:25,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:32:25,835 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:32:25,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-01-31 02:32:26,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-01-31 02:32:26,035 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:32:26,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:32:26,036 INFO L85 PathProgramCache]: Analyzing trace with hash 380815980, now seen corresponding path program 114 times [2022-01-31 02:32:26,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:32:26,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973544859] [2022-01-31 02:32:26,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:32:26,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:32:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:32:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:32:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:32:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:32:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:32:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:32:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:32:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:32:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:32:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:32:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:32:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:32:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:32:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:32:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:32:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:32:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:32:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:32:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:32:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:32:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:32:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:32:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:32:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:32:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:32:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:32:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:32:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 02:32:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 02:32:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 02:32:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 02:32:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 02:32:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 02:32:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 02:32:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 02:32:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 02:32:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 02:32:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 02:32:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 02:32:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 02:32:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 02:32:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 02:32:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 02:32:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 02:32:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 02:32:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 02:32:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 02:32:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 02:32:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 02:32:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 02:32:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 02:32:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 02:32:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 02:32:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 02:32:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 02:32:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 02:32:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 02:32:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 02:32:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13111 backedges. 1767 proven. 4960 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-01-31 02:32:27,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:32:27,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973544859] [2022-01-31 02:32:27,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973544859] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:32:27,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861790332] [2022-01-31 02:32:27,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:32:27,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:32:27,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:32:27,440 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) [2022-01-31 02:32:27,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-01-31 02:32:27,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2022-01-31 02:32:27,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:32:27,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 119 conjunts are in the unsatisfiable core [2022-01-31 02:32:27,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:32:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 13111 backedges. 1825 proven. 4902 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-01-31 02:32:28,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:32:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13111 backedges. 1825 proven. 4902 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-01-31 02:32:29,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861790332] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:32:29,017 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:32:29,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 67 [2022-01-31 02:32:29,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065227833] [2022-01-31 02:32:29,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:32:29,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-31 02:32:29,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:32:29,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-31 02:32:29,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1845, Invalid=2577, Unknown=0, NotChecked=0, Total=4422 [2022-01-31 02:32:29,019 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) [2022-01-31 02:32:30,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:32:30,564 INFO L93 Difference]: Finished difference Result 486 states and 488 transitions. [2022-01-31 02:32:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-31 02:32:30,565 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 [2022-01-31 02:32:30,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:32:30,566 INFO L225 Difference]: With dead ends: 486 [2022-01-31 02:32:30,566 INFO L226 Difference]: Without dead ends: 484 [2022-01-31 02:32:30,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1239 GetRequests, 1109 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2879 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5527, Invalid=11243, Unknown=0, NotChecked=0, Total=16770 [2022-01-31 02:32:30,567 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 146 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:32:30,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 60 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:32:30,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-01-31 02:32:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 480. [2022-01-31 02:32:30,631 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) [2022-01-31 02:32:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 481 transitions. [2022-01-31 02:32:30,631 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 481 transitions. Word has length 470 [2022-01-31 02:32:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:32:30,632 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 481 transitions. [2022-01-31 02:32:30,632 INFO L471 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) [2022-01-31 02:32:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 481 transitions. [2022-01-31 02:32:30,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-01-31 02:32:30,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:32:30,634 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:32:30,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-01-31 02:32:30,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-01-31 02:32:30,858 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:32:30,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:32:30,859 INFO L85 PathProgramCache]: Analyzing trace with hash -559535097, now seen corresponding path program 115 times [2022-01-31 02:32:30,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:32:30,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274601178] [2022-01-31 02:32:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:32:30,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:32:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:32:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-31 02:32:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:32:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:32:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:32:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:32:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:32:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:32:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:32:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:32:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:32:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:32:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:32:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:32:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:32:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:32:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:32:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:32:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:32:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:32:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:32:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:32:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:32:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:32:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:32:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:32:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:32:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 02:32:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 02:32:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 02:32:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 02:32:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 02:32:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 02:32:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 02:32:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 02:32:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 02:32:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 02:32:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 02:32:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 02:32:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 02:32:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 02:32:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 02:32:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 02:32:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 02:32:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 02:32:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 02:32:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 02:32:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 02:32:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 02:32:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 02:32:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 02:32:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 02:32:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 02:32:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 02:32:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 02:32:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 02:32:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 02:32:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 02:32:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 02:32:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 13514 backedges. 5191 proven. 1711 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-01-31 02:32:34,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:32:34,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274601178] [2022-01-31 02:32:34,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274601178] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:32:34,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805148413] [2022-01-31 02:32:34,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:32:34,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:32:34,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:32:34,306 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) [2022-01-31 02:32:34,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-01-31 02:32:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:34,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 120 conjunts are in the unsatisfiable core [2022-01-31 02:32:34,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:32:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 13514 backedges. 5191 proven. 1711 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-01-31 02:32:35,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:32:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 13514 backedges. 5191 proven. 1711 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-01-31 02:32:35,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805148413] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:32:35,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:32:35,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 121, 121] total 123 [2022-01-31 02:32:35,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210692515] [2022-01-31 02:32:35,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:32:35,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-01-31 02:32:35,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:32:35,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-01-31 02:32:35,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3724, Invalid=11282, Unknown=0, NotChecked=0, Total=15006 [2022-01-31 02:32:35,786 INFO L87 Difference]: Start difference. First operand 480 states and 481 transitions. Second operand has 123 states, 123 states have (on average 1.5365853658536586) internal successors, (189), 122 states have internal predecessors, (189), 60 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 02:32:40,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:32:40,237 INFO L93 Difference]: Finished difference Result 666 states and 726 transitions. [2022-01-31 02:32:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-31 02:32:40,238 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.5365853658536586) internal successors, (189), 122 states have internal predecessors, (189), 60 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 477 [2022-01-31 02:32:40,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:32:40,239 INFO L225 Difference]: With dead ends: 666 [2022-01-31 02:32:40,239 INFO L226 Difference]: Without dead ends: 481 [2022-01-31 02:32:40,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1070 SyntacticMatches, 1 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14269 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=11283, Invalid=47039, Unknown=0, NotChecked=0, Total=58322 [2022-01-31 02:32:40,242 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 02:32:40,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 106 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 02:32:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-01-31 02:32:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2022-01-31 02:32:40,312 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) [2022-01-31 02:32:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 482 transitions. [2022-01-31 02:32:40,313 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 482 transitions. Word has length 477 [2022-01-31 02:32:40,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:32:40,313 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 482 transitions. [2022-01-31 02:32:40,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.5365853658536586) internal successors, (189), 122 states have internal predecessors, (189), 60 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-01-31 02:32:40,313 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 482 transitions. [2022-01-31 02:32:40,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-01-31 02:32:40,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:32:40,315 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:32:40,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-01-31 02:32:40,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:32:40,515 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:32:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:32:40,516 INFO L85 PathProgramCache]: Analyzing trace with hash -413423763, now seen corresponding path program 116 times [2022-01-31 02:32:40,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:32:40,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642425492] [2022-01-31 02:32:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:32:40,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:32:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:32:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:32:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:32:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:32:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:32:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:32:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:32:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:32:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:32:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:32:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:32:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:32:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:32:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:32:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:32:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:32:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:32:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:32:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:32:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:32:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:32:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:32:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:32:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:32:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:32:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:32:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:32:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:32:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 02:32:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 02:32:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 02:32:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 02:32:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 02:32:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 02:32:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 02:32:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 02:32:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 02:32:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 02:32:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 02:32:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 02:32:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 02:32:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 02:32:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 02:32:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 02:32:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 02:32:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 02:32:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 02:32:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 02:32:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 02:32:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 02:32:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 02:32:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 02:32:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-01-31 02:32:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 02:32:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 02:32:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 02:32:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 02:32:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-01-31 02:32:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 02:32:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 13573 backedges. 1827 proven. 5134 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-01-31 02:32:41,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:32:41,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642425492] [2022-01-31 02:32:41,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642425492] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:32:41,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307686573] [2022-01-31 02:32:41,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:32:41,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:32:41,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:32:41,989 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) [2022-01-31 02:32:41,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-01-31 02:32:42,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:32:42,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:32:42,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 121 conjunts are in the unsatisfiable core [2022-01-31 02:32:42,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:32:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 13573 backedges. 1886 proven. 5075 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-01-31 02:32:42,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:32:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13573 backedges. 1886 proven. 5075 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-01-31 02:32:43,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307686573] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:32:43,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:32:43,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 68 [2022-01-31 02:32:43,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865482460] [2022-01-31 02:32:43,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:32:43,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-31 02:32:43,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:32:43,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-31 02:32:43,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1906, Invalid=2650, Unknown=0, NotChecked=0, Total=4556 [2022-01-31 02:32:43,499 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) [2022-01-31 02:32:45,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:32:45,042 INFO L93 Difference]: Finished difference Result 494 states and 496 transitions. [2022-01-31 02:32:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-31 02:32:45,043 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 [2022-01-31 02:32:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:32:45,044 INFO L225 Difference]: With dead ends: 494 [2022-01-31 02:32:45,044 INFO L226 Difference]: Without dead ends: 492 [2022-01-31 02:32:45,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1260 GetRequests, 1128 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2958 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5710, Invalid=11582, Unknown=0, NotChecked=0, Total=17292 [2022-01-31 02:32:45,045 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 154 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 02:32:45,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 50 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 02:32:45,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-01-31 02:32:45,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 488. [2022-01-31 02:32:45,116 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) [2022-01-31 02:32:45,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 489 transitions. [2022-01-31 02:32:45,116 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 489 transitions. Word has length 478 [2022-01-31 02:32:45,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:32:45,116 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 489 transitions. [2022-01-31 02:32:45,117 INFO L471 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) [2022-01-31 02:32:45,117 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 489 transitions. [2022-01-31 02:32:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-01-31 02:32:45,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:32:45,118 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:32:45,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-01-31 02:32:45,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:32:45,323 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:32:45,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:32:45,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1285282790, now seen corresponding path program 117 times [2022-01-31 02:32:45,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:32:45,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439339736] [2022-01-31 02:32:45,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:32:45,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:32:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:32:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-31 02:32:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:32:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:32:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:32:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:32:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:32:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:32:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:32:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:32:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:32:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:32:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:32:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:32:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:32:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:32:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:32:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:32:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:32:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:32:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:32:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:32:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:32:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:32:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:32:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:32:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:32:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:32:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 02:32:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 02:32:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 02:32:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 02:32:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 02:32:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 02:32:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 02:32:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 02:32:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 02:32:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 02:32:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 02:32:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 02:32:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 02:32:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 02:32:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 02:32:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 02:32:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 02:32:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 02:32:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 02:32:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 02:32:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 02:32:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 02:32:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 02:32:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 02:32:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-01-31 02:32:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 02:32:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 02:32:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 02:32:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 02:32:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-01-31 02:32:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 02:32:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 02:32:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:48,927 INFO L134 CoverageAnalysis]: Checked inductivity of 13983 backedges. 5369 proven. 1770 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-01-31 02:32:48,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:32:48,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439339736] [2022-01-31 02:32:48,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439339736] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:32:48,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041836436] [2022-01-31 02:32:48,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:32:48,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:32:48,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:32:48,929 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) [2022-01-31 02:32:48,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-01-31 02:32:49,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2022-01-31 02:32:49,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:32:49,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 122 conjunts are in the unsatisfiable core [2022-01-31 02:32:49,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:32:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 13983 backedges. 5369 proven. 1770 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-01-31 02:32:49,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:32:50,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13983 backedges. 5369 proven. 1770 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-01-31 02:32:50,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041836436] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:32:50,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:32:50,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 123, 123] total 125 [2022-01-31 02:32:50,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650798164] [2022-01-31 02:32:50,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:32:50,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-01-31 02:32:50,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:32:50,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-01-31 02:32:50,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3847, Invalid=11653, Unknown=0, NotChecked=0, Total=15500 [2022-01-31 02:32:50,563 INFO L87 Difference]: Start difference. First operand 488 states and 489 transitions. Second operand has 125 states, 125 states have (on average 1.536) internal successors, (192), 124 states have internal predecessors, (192), 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) [2022-01-31 02:32:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:32:55,519 INFO L93 Difference]: Finished difference Result 677 states and 738 transitions. [2022-01-31 02:32:55,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-01-31 02:32:55,520 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 1.536) internal successors, (192), 124 states have internal predecessors, (192), 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 485 [2022-01-31 02:32:55,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:32:55,521 INFO L225 Difference]: With dead ends: 677 [2022-01-31 02:32:55,521 INFO L226 Difference]: Without dead ends: 489 [2022-01-31 02:32:55,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 1088 SyntacticMatches, 1 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14751 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=11654, Invalid=48616, Unknown=0, NotChecked=0, Total=60270 [2022-01-31 02:32:55,524 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 2961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 02:32:55,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 112 Invalid, 2961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 02:32:55,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-01-31 02:32:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-01-31 02:32:55,593 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) [2022-01-31 02:32:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 490 transitions. [2022-01-31 02:32:55,594 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 490 transitions. Word has length 485 [2022-01-31 02:32:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:32:55,594 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 490 transitions. [2022-01-31 02:32:55,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 1.536) internal successors, (192), 124 states have internal predecessors, (192), 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) [2022-01-31 02:32:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 490 transitions. [2022-01-31 02:32:55,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-01-31 02:32:55,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:32:55,596 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:32:55,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-01-31 02:32:55,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-01-31 02:32:55,797 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:32:55,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:32:55,797 INFO L85 PathProgramCache]: Analyzing trace with hash -991260340, now seen corresponding path program 118 times [2022-01-31 02:32:55,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:32:55,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163565988] [2022-01-31 02:32:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:32:55,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:32:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:32:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:32:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:32:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:32:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:32:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:32:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:32:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:32:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:32:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:32:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:32:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:32:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:32:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:32:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:32:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:32:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:32:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:32:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:32:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:32:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:32:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:32:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:32:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:32:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:32:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:32:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:32:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:32:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:32:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 02:32:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 02:32:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 02:32:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 02:32:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 02:32:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 02:32:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 02:32:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 02:32:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 02:32:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 02:32:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 02:32:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 02:32:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 02:32:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 02:32:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 02:32:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 02:32:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 02:32:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 02:32:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 02:32:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 02:32:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 02:32:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 02:32:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 02:32:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 02:32:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-01-31 02:32:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 02:32:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 02:32:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 02:32:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 02:32:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-01-31 02:32:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-01-31 02:32:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:32:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 14043 backedges. 1888 proven. 5311 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-01-31 02:32:57,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:32:57,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163565988] [2022-01-31 02:32:57,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163565988] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:32:57,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412062521] [2022-01-31 02:32:57,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:32:57,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:32:57,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:32:57,290 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) [2022-01-31 02:32:57,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-01-31 02:32:57,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:32:57,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:32:57,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 123 conjunts are in the unsatisfiable core [2022-01-31 02:32:57,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:32:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 14043 backedges. 1948 proven. 5251 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-01-31 02:32:58,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:32:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14043 backedges. 1948 proven. 5251 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-01-31 02:32:58,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412062521] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:32:58,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:32:58,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 69 [2022-01-31 02:32:58,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896711369] [2022-01-31 02:32:58,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:32:58,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-31 02:32:58,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:32:58,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-31 02:32:58,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1968, Invalid=2724, Unknown=0, NotChecked=0, Total=4692 [2022-01-31 02:32:58,843 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) [2022-01-31 02:33:00,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:33:00,511 INFO L93 Difference]: Finished difference Result 502 states and 504 transitions. [2022-01-31 02:33:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-31 02:33:00,511 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 [2022-01-31 02:33:00,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:33:00,512 INFO L225 Difference]: With dead ends: 502 [2022-01-31 02:33:00,512 INFO L226 Difference]: Without dead ends: 500 [2022-01-31 02:33:00,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1281 GetRequests, 1147 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3038 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=5896, Invalid=11926, Unknown=0, NotChecked=0, Total=17822 [2022-01-31 02:33:00,513 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 145 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:33:00,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 60 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:33:00,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-01-31 02:33:00,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 496. [2022-01-31 02:33:00,571 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) [2022-01-31 02:33:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 497 transitions. [2022-01-31 02:33:00,572 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 497 transitions. Word has length 486 [2022-01-31 02:33:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:33:00,572 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 497 transitions. [2022-01-31 02:33:00,572 INFO L471 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) [2022-01-31 02:33:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 497 transitions. [2022-01-31 02:33:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2022-01-31 02:33:00,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:33:00,574 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:33:00,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-01-31 02:33:00,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2022-01-31 02:33:00,775 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:33:00,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:33:00,775 INFO L85 PathProgramCache]: Analyzing trace with hash 575334695, now seen corresponding path program 119 times [2022-01-31 02:33:00,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:33:00,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924556854] [2022-01-31 02:33:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:33:00,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:33:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:33:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-31 02:33:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:33:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:33:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:33:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:33:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:33:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:33:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:33:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:33:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:33:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:33:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:33:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:33:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:33:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:33:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:33:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:33:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:33:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:33:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:33:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:33:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:33:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:33:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:33:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:33:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:33:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:33:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:33:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 02:33:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 02:33:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 02:33:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 02:33:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 02:33:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 02:33:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 02:33:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 02:33:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 02:33:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 02:33:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 02:33:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 02:33:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 02:33:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 02:33:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 02:33:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 02:33:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 02:33:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 02:33:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 02:33:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 02:33:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 02:33:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 02:33:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 02:33:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 02:33:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-01-31 02:33:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 02:33:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 02:33:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 02:33:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 02:33:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-01-31 02:33:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-01-31 02:33:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 02:33:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 14460 backedges. 5550 proven. 1830 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-01-31 02:33:04,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:33:04,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924556854] [2022-01-31 02:33:04,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924556854] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:33:04,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111953037] [2022-01-31 02:33:04,491 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:33:04,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:33:04,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:33:04,492 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) [2022-01-31 02:33:04,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-01-31 02:33:04,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2022-01-31 02:33:04,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:33:04,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 124 conjunts are in the unsatisfiable core [2022-01-31 02:33:04,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:33:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 14460 backedges. 5550 proven. 1830 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-01-31 02:33:05,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:33:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14460 backedges. 5550 proven. 1830 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-01-31 02:33:06,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111953037] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:33:06,129 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:33:06,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 125, 125] total 127 [2022-01-31 02:33:06,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297802786] [2022-01-31 02:33:06,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:33:06,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-01-31 02:33:06,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:33:06,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-01-31 02:33:06,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3972, Invalid=12030, Unknown=0, NotChecked=0, Total=16002 [2022-01-31 02:33:06,132 INFO L87 Difference]: Start difference. First operand 496 states and 497 transitions. Second operand has 127 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 126 states have internal predecessors, (195), 62 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-01-31 02:33:11,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:33:11,208 INFO L93 Difference]: Finished difference Result 688 states and 750 transitions. [2022-01-31 02:33:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-31 02:33:11,209 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 126 states have internal predecessors, (195), 62 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Word has length 493 [2022-01-31 02:33:11,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:33:11,210 INFO L225 Difference]: With dead ends: 688 [2022-01-31 02:33:11,210 INFO L226 Difference]: Without dead ends: 497 [2022-01-31 02:33:11,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1355 GetRequests, 1106 SyntacticMatches, 1 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15241 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=12031, Invalid=50219, Unknown=0, NotChecked=0, Total=62250 [2022-01-31 02:33:11,213 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 19 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2641 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 02:33:11,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 133 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2641 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 02:33:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-01-31 02:33:11,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2022-01-31 02:33:11,276 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) [2022-01-31 02:33:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 498 transitions. [2022-01-31 02:33:11,277 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 498 transitions. Word has length 493 [2022-01-31 02:33:11,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:33:11,277 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 498 transitions. [2022-01-31 02:33:11,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 126 states have internal predecessors, (195), 62 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-01-31 02:33:11,277 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 498 transitions. [2022-01-31 02:33:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-01-31 02:33:11,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:33:11,280 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:33:11,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-01-31 02:33:11,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:33:11,490 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:33:11,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:33:11,490 INFO L85 PathProgramCache]: Analyzing trace with hash -497493875, now seen corresponding path program 120 times [2022-01-31 02:33:11,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:33:11,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187903346] [2022-01-31 02:33:11,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:33:11,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:33:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:33:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:33:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:33:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:33:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:33:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:33:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:33:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:33:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:33:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:33:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:33:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:33:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:33:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:33:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:33:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:33:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:33:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:33:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:33:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:33:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:33:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:33:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 02:33:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 02:33:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 02:33:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 02:33:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 02:33:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 02:33:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 02:33:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 02:33:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 02:33:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 02:33:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 02:33:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 02:33:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 02:33:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 02:33:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 02:33:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 02:33:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 02:33:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 02:33:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:12,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 02:33:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 02:33:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 02:33:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 02:33:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 02:33:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 02:33:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 02:33:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 02:33:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 02:33:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 02:33:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 02:33:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 02:33:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 02:33:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 02:33:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-01-31 02:33:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-01-31 02:33:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 02:33:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 02:33:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 02:33:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-01-31 02:33:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-01-31 02:33:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 1950 proven. 5491 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-01-31 02:33:13,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:33:13,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187903346] [2022-01-31 02:33:13,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187903346] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:33:13,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763661827] [2022-01-31 02:33:13,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:33:13,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:33:13,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:33:13,026 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) [2022-01-31 02:33:13,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-01-31 02:33:13,277 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2022-01-31 02:33:13,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:33:13,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 125 conjunts are in the unsatisfiable core [2022-01-31 02:33:13,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:33:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 2011 proven. 5430 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-01-31 02:33:13,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:33:14,693 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 2011 proven. 5430 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-01-31 02:33:14,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763661827] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:33:14,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:33:14,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 70 [2022-01-31 02:33:14,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66816124] [2022-01-31 02:33:14,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:33:14,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 02:33:14,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:33:14,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 02:33:14,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2031, Invalid=2799, Unknown=0, NotChecked=0, Total=4830 [2022-01-31 02:33:14,695 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) [2022-01-31 02:33:16,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:33:16,414 INFO L93 Difference]: Finished difference Result 510 states and 512 transitions. [2022-01-31 02:33:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-31 02:33:16,415 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 [2022-01-31 02:33:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:33:16,416 INFO L225 Difference]: With dead ends: 510 [2022-01-31 02:33:16,416 INFO L226 Difference]: Without dead ends: 508 [2022-01-31 02:33:16,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1302 GetRequests, 1166 SyntacticMatches, 2 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=6085, Invalid=12275, Unknown=0, NotChecked=0, Total=18360 [2022-01-31 02:33:16,418 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 155 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:33:16,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 65 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:33:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-01-31 02:33:16,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 504. [2022-01-31 02:33:16,486 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) [2022-01-31 02:33:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 505 transitions. [2022-01-31 02:33:16,486 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 505 transitions. Word has length 494 [2022-01-31 02:33:16,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:33:16,487 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 505 transitions. [2022-01-31 02:33:16,487 INFO L471 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) [2022-01-31 02:33:16,487 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 505 transitions. [2022-01-31 02:33:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-01-31 02:33:16,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:33:16,489 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:33:16,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-01-31 02:33:16,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:33:16,689 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:33:16,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:33:16,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2135218490, now seen corresponding path program 121 times [2022-01-31 02:33:16,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:33:16,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892317026] [2022-01-31 02:33:16,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:33:16,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:33:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:33:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-01-31 02:33:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:33:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:33:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:33:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:33:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:33:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:33:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:33:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:33:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:33:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:33:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:33:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:33:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:33:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:33:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:33:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:33:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:33:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:33:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:33:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:33:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 02:33:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 02:33:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 02:33:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 02:33:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 02:33:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 02:33:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 02:33:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 02:33:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 02:33:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 02:33:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 02:33:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 02:33:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 02:33:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 02:33:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 02:33:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 02:33:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 02:33:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 02:33:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 02:33:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 02:33:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 02:33:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 02:33:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 02:33:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 02:33:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 02:33:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 02:33:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 02:33:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 02:33:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 02:33:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 02:33:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 02:33:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 02:33:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-01-31 02:33:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-01-31 02:33:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 02:33:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 02:33:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 02:33:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-01-31 02:33:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-01-31 02:33:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 02:33:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 14945 backedges. 5734 proven. 1891 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-01-31 02:33:20,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:33:20,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892317026] [2022-01-31 02:33:20,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892317026] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:33:20,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956861333] [2022-01-31 02:33:20,522 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:33:20,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:33:20,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:33:20,523 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) [2022-01-31 02:33:20,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-01-31 02:33:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:20,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 126 conjunts are in the unsatisfiable core [2022-01-31 02:33:20,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:33:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 14945 backedges. 5734 proven. 1891 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-01-31 02:33:21,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:33:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14945 backedges. 5734 proven. 1891 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-01-31 02:33:22,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956861333] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:33:22,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:33:22,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 127, 127] total 129 [2022-01-31 02:33:22,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426255152] [2022-01-31 02:33:22,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:33:22,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-01-31 02:33:22,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:33:22,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-01-31 02:33:22,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=12413, Unknown=0, NotChecked=0, Total=16512 [2022-01-31 02:33:22,113 INFO L87 Difference]: Start difference. First operand 504 states and 505 transitions. Second operand has 129 states, 129 states have (on average 1.5348837209302326) internal successors, (198), 128 states have internal predecessors, (198), 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) [2022-01-31 02:33:27,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:33:27,470 INFO L93 Difference]: Finished difference Result 699 states and 762 transitions. [2022-01-31 02:33:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-31 02:33:27,471 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 1.5348837209302326) internal successors, (198), 128 states have internal predecessors, (198), 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 501 [2022-01-31 02:33:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:33:27,472 INFO L225 Difference]: With dead ends: 699 [2022-01-31 02:33:27,472 INFO L226 Difference]: Without dead ends: 505 [2022-01-31 02:33:27,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1377 GetRequests, 1124 SyntacticMatches, 1 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15739 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=12414, Invalid=51848, Unknown=0, NotChecked=0, Total=64262 [2022-01-31 02:33:27,476 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 19 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 3302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:33:27,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 139 Invalid, 3302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 3049 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 02:33:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-01-31 02:33:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2022-01-31 02:33:27,550 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) [2022-01-31 02:33:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 506 transitions. [2022-01-31 02:33:27,550 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 506 transitions. Word has length 501 [2022-01-31 02:33:27,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:33:27,550 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 506 transitions. [2022-01-31 02:33:27,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 1.5348837209302326) internal successors, (198), 128 states have internal predecessors, (198), 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) [2022-01-31 02:33:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 506 transitions. [2022-01-31 02:33:27,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2022-01-31 02:33:27,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:33:27,552 INFO L514 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:33:27,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-01-31 02:33:27,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:33:27,753 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:33:27,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:33:27,753 INFO L85 PathProgramCache]: Analyzing trace with hash -626110420, now seen corresponding path program 122 times [2022-01-31 02:33:27,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:33:27,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129569520] [2022-01-31 02:33:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:33:27,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:33:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:33:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:33:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:33:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:33:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:33:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:33:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:33:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:33:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:33:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:33:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:33:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:33:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:33:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:33:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:33:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:33:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:33:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:33:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:33:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:33:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:33:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:33:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:33:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 02:33:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 02:33:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 02:33:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 02:33:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 02:33:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 02:33:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 02:33:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 02:33:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 02:33:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 02:33:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 02:33:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 02:33:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 02:33:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 02:33:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 02:33:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 02:33:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 02:33:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 02:33:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 02:33:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 02:33:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 02:33:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 02:33:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 02:33:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 02:33:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 02:33:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 02:33:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 02:33:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 02:33:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 02:33:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 02:33:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 02:33:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 02:33:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-01-31 02:33:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-01-31 02:33:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 02:33:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 02:33:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 02:33:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-01-31 02:33:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-01-31 02:33:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15007 backedges. 2013 proven. 5674 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-01-31 02:33:29,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:33:29,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129569520] [2022-01-31 02:33:29,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129569520] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:33:29,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800895125] [2022-01-31 02:33:29,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:33:29,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:33:29,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:33:29,335 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) [2022-01-31 02:33:29,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-01-31 02:33:29,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:33:29,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:33:29,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 127 conjunts are in the unsatisfiable core [2022-01-31 02:33:29,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:33:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 15007 backedges. 2075 proven. 5612 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-01-31 02:33:30,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:33:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 15007 backedges. 2075 proven. 5612 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-01-31 02:33:30,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800895125] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:33:30,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:33:30,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 71 [2022-01-31 02:33:30,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248131694] [2022-01-31 02:33:30,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:33:30,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-31 02:33:30,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:33:30,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-31 02:33:30,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2095, Invalid=2875, Unknown=0, NotChecked=0, Total=4970 [2022-01-31 02:33:30,919 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) [2022-01-31 02:33:32,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:33:32,705 INFO L93 Difference]: Finished difference Result 518 states and 520 transitions. [2022-01-31 02:33:32,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-31 02:33:32,705 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 [2022-01-31 02:33:32,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:33:32,707 INFO L225 Difference]: With dead ends: 518 [2022-01-31 02:33:32,707 INFO L226 Difference]: Without dead ends: 516 [2022-01-31 02:33:32,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1323 GetRequests, 1185 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3201 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=6277, Invalid=12629, Unknown=0, NotChecked=0, Total=18906 [2022-01-31 02:33:32,708 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 153 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 02:33:32,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 60 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 02:33:32,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-01-31 02:33:32,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 512. [2022-01-31 02:33:32,780 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) [2022-01-31 02:33:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 513 transitions. [2022-01-31 02:33:32,780 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 513 transitions. Word has length 502 [2022-01-31 02:33:32,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:33:32,781 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 513 transitions. [2022-01-31 02:33:32,781 INFO L471 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) [2022-01-31 02:33:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 513 transitions. [2022-01-31 02:33:32,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-01-31 02:33:32,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:33:32,783 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:33:32,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-01-31 02:33:32,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-01-31 02:33:32,984 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:33:32,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:33:32,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1619218873, now seen corresponding path program 123 times [2022-01-31 02:33:32,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:33:32,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140298660] [2022-01-31 02:33:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:33:32,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:33:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:33:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-01-31 02:33:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:33:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:33:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:33:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:33:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:33:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:33:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:33:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:33:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:33:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:33:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:33:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:33:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:33:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:33:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:33:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:33:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:33:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:33:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:33:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:33:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:33:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 02:33:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 02:33:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 02:33:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 02:33:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 02:33:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 02:33:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 02:33:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 02:33:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 02:33:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 02:33:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 02:33:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 02:33:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 02:33:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 02:33:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 02:33:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 02:33:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 02:33:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 02:33:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 02:33:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 02:33:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 02:33:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 02:33:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 02:33:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 02:33:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 02:33:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 02:33:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 02:33:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 02:33:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 02:33:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 02:33:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 02:33:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 02:33:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-01-31 02:33:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-01-31 02:33:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 02:33:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 02:33:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 02:33:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-01-31 02:33:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-01-31 02:33:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 02:33:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15438 backedges. 5921 proven. 1953 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-01-31 02:33:36,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:33:36,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140298660] [2022-01-31 02:33:36,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140298660] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:33:36,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666340421] [2022-01-31 02:33:36,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:33:36,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:33:36,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:33:36,928 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) [2022-01-31 02:33:36,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-01-31 02:33:37,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2022-01-31 02:33:37,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:33:37,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 128 conjunts are in the unsatisfiable core [2022-01-31 02:33:37,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:33:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 15438 backedges. 5921 proven. 1953 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-01-31 02:33:37,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:33:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 15438 backedges. 5921 proven. 1953 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-01-31 02:33:38,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666340421] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:33:38,649 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:33:38,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 129, 129] total 131 [2022-01-31 02:33:38,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298527465] [2022-01-31 02:33:38,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:33:38,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-01-31 02:33:38,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:33:38,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-01-31 02:33:38,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4228, Invalid=12802, Unknown=0, NotChecked=0, Total=17030 [2022-01-31 02:33:38,651 INFO L87 Difference]: Start difference. First operand 512 states and 513 transitions. Second operand has 131 states, 131 states have (on average 1.534351145038168) internal successors, (201), 130 states have internal predecessors, (201), 64 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 02:33:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:33:43,848 INFO L93 Difference]: Finished difference Result 710 states and 774 transitions. [2022-01-31 02:33:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-31 02:33:43,849 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.534351145038168) internal successors, (201), 130 states have internal predecessors, (201), 64 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Word has length 509 [2022-01-31 02:33:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:33:43,850 INFO L225 Difference]: With dead ends: 710 [2022-01-31 02:33:43,850 INFO L226 Difference]: Without dead ends: 513 [2022-01-31 02:33:43,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1399 GetRequests, 1142 SyntacticMatches, 1 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16245 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=12803, Invalid=53503, Unknown=0, NotChecked=0, Total=66306 [2022-01-31 02:33:43,853 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 02:33:43,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 105 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 02:33:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-01-31 02:33:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2022-01-31 02:33:43,962 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) [2022-01-31 02:33:43,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 514 transitions. [2022-01-31 02:33:43,962 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 514 transitions. Word has length 509 [2022-01-31 02:33:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:33:43,963 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 514 transitions. [2022-01-31 02:33:43,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.534351145038168) internal successors, (201), 130 states have internal predecessors, (201), 64 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-01-31 02:33:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 514 transitions. [2022-01-31 02:33:43,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2022-01-31 02:33:43,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:33:43,965 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:33:43,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-01-31 02:33:44,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-01-31 02:33:44,165 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:33:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:33:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1601900973, now seen corresponding path program 124 times [2022-01-31 02:33:44,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:33:44,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68028495] [2022-01-31 02:33:44,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:33:44,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:33:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:33:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:33:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:33:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:33:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:33:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:33:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:33:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:33:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:33:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:33:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:33:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:33:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:33:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:33:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:33:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:33:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:33:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:33:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:33:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:33:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:33:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:33:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:33:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:33:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 02:33:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 02:33:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 02:33:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 02:33:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 02:33:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 02:33:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 02:33:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 02:33:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 02:33:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 02:33:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 02:33:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 02:33:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 02:33:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 02:33:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 02:33:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 02:33:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 02:33:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 02:33:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 02:33:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 02:33:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 02:33:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 02:33:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 02:33:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 02:33:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 02:33:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 02:33:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 02:33:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 02:33:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 02:33:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 02:33:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 02:33:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 02:33:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-01-31 02:33:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-01-31 02:33:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 02:33:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 02:33:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 02:33:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-01-31 02:33:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-01-31 02:33:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 15501 backedges. 2077 proven. 5860 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-01-31 02:33:45,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:33:45,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68028495] [2022-01-31 02:33:45,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68028495] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:33:45,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432765006] [2022-01-31 02:33:45,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:33:45,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:33:45,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:33:45,791 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) [2022-01-31 02:33:45,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-01-31 02:33:45,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:33:45,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:33:45,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 129 conjunts are in the unsatisfiable core [2022-01-31 02:33:45,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:33:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15501 backedges. 2140 proven. 5797 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-01-31 02:33:46,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:33:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 15501 backedges. 2140 proven. 5797 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-01-31 02:33:47,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432765006] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:33:47,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:33:47,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 68] total 72 [2022-01-31 02:33:47,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888670272] [2022-01-31 02:33:47,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:33:47,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-31 02:33:47,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:33:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-31 02:33:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2160, Invalid=2952, Unknown=0, NotChecked=0, Total=5112 [2022-01-31 02:33:47,408 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) [2022-01-31 02:33:49,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:33:49,076 INFO L93 Difference]: Finished difference Result 526 states and 528 transitions. [2022-01-31 02:33:49,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-31 02:33:49,076 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 [2022-01-31 02:33:49,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:33:49,078 INFO L225 Difference]: With dead ends: 526 [2022-01-31 02:33:49,078 INFO L226 Difference]: Without dead ends: 524 [2022-01-31 02:33:49,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1204 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3284 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=6472, Invalid=12988, Unknown=0, NotChecked=0, Total=19460 [2022-01-31 02:33:49,079 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 164 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:33:49,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 60 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:33:49,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-31 02:33:49,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 520. [2022-01-31 02:33:49,151 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) [2022-01-31 02:33:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 521 transitions. [2022-01-31 02:33:49,152 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 521 transitions. Word has length 510 [2022-01-31 02:33:49,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:33:49,152 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 521 transitions. [2022-01-31 02:33:49,152 INFO L471 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) [2022-01-31 02:33:49,152 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 521 transitions. [2022-01-31 02:33:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-01-31 02:33:49,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:33:49,154 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:33:49,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-01-31 02:33:49,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-01-31 02:33:49,355 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:33:49,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:33:49,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2021419430, now seen corresponding path program 125 times [2022-01-31 02:33:49,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:33:49,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309169218] [2022-01-31 02:33:49,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:33:49,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:33:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:33:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-01-31 02:33:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:33:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:33:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:33:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:33:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:33:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:33:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:33:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:33:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:33:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:33:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:33:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:33:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:33:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:33:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:33:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:33:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:33:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:33:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:33:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:33:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:33:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:33:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 02:33:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 02:33:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 02:33:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 02:33:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 02:33:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 02:33:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 02:33:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 02:33:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 02:33:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 02:33:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 02:33:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 02:33:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 02:33:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 02:33:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 02:33:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 02:33:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 02:33:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 02:33:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 02:33:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 02:33:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 02:33:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 02:33:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 02:33:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 02:33:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 02:33:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 02:33:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 02:33:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 02:33:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 02:33:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 02:33:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 02:33:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 02:33:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-01-31 02:33:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-01-31 02:33:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 02:33:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 02:33:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 02:33:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-01-31 02:33:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-01-31 02:33:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 02:33:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:33:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 15939 backedges. 6111 proven. 2016 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-01-31 02:33:53,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:33:53,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309169218] [2022-01-31 02:33:53,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309169218] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:33:53,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347877965] [2022-01-31 02:33:53,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:33:53,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:33:53,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:33:53,417 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) [2022-01-31 02:33:53,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-01-31 02:33:53,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2022-01-31 02:33:53,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:33:53,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 130 conjunts are in the unsatisfiable core [2022-01-31 02:33:53,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:33:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 15939 backedges. 6111 proven. 2016 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-01-31 02:33:54,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:33:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15939 backedges. 6111 proven. 2016 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-01-31 02:33:55,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347877965] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:33:55,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:33:55,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 131, 131] total 133 [2022-01-31 02:33:55,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317668989] [2022-01-31 02:33:55,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:33:55,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-01-31 02:33:55,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:33:55,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-01-31 02:33:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4359, Invalid=13197, Unknown=0, NotChecked=0, Total=17556 [2022-01-31 02:33:55,144 INFO L87 Difference]: Start difference. First operand 520 states and 521 transitions. Second operand has 133 states, 133 states have (on average 1.5338345864661653) internal successors, (204), 132 states have internal predecessors, (204), 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) [2022-01-31 02:34:00,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:34:00,595 INFO L93 Difference]: Finished difference Result 721 states and 786 transitions. [2022-01-31 02:34:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-31 02:34:00,595 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 1.5338345864661653) internal successors, (204), 132 states have internal predecessors, (204), 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 517 [2022-01-31 02:34:00,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:34:00,597 INFO L225 Difference]: With dead ends: 721 [2022-01-31 02:34:00,597 INFO L226 Difference]: Without dead ends: 521 [2022-01-31 02:34:00,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1421 GetRequests, 1160 SyntacticMatches, 1 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16759 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=13198, Invalid=55184, Unknown=0, NotChecked=0, Total=68382 [2022-01-31 02:34:00,600 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 02:34:00,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 126 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 02:34:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-01-31 02:34:00,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2022-01-31 02:34:00,679 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) [2022-01-31 02:34:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 522 transitions. [2022-01-31 02:34:00,680 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 522 transitions. Word has length 517 [2022-01-31 02:34:00,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:34:00,680 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 522 transitions. [2022-01-31 02:34:00,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 1.5338345864661653) internal successors, (204), 132 states have internal predecessors, (204), 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) [2022-01-31 02:34:00,680 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 522 transitions. [2022-01-31 02:34:00,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-01-31 02:34:00,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:34:00,682 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:34:00,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-01-31 02:34:00,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:34:00,883 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:34:00,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:34:00,884 INFO L85 PathProgramCache]: Analyzing trace with hash -458488052, now seen corresponding path program 126 times [2022-01-31 02:34:00,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:34:00,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986140453] [2022-01-31 02:34:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:34:00,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:34:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:34:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:34:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:34:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:34:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:34:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:34:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:34:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:34:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:34:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:34:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:34:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:34:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:34:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:34:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:34:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:34:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:34:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:34:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:34:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:34:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:34:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:34:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:34:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:34:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:34:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 02:34:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 02:34:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 02:34:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 02:34:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 02:34:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 02:34:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 02:34:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 02:34:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 02:34:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 02:34:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 02:34:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 02:34:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 02:34:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 02:34:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 02:34:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 02:34:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 02:34:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 02:34:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 02:34:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 02:34:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 02:34:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 02:34:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 02:34:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 02:34:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 02:34:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 02:34:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 02:34:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 02:34:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 02:34:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 02:34:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 02:34:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 02:34:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-01-31 02:34:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-01-31 02:34:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 02:34:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 02:34:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 02:34:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-01-31 02:34:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-01-31 02:34:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16003 backedges. 2142 proven. 6049 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-01-31 02:34:02,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:34:02,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986140453] [2022-01-31 02:34:02,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986140453] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:34:02,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203115166] [2022-01-31 02:34:02,564 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:34:02,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:34:02,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:34:02,567 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) [2022-01-31 02:34:02,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-01-31 02:34:02,827 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2022-01-31 02:34:02,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:34:02,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 131 conjunts are in the unsatisfiable core [2022-01-31 02:34:02,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:34:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 16003 backedges. 2206 proven. 5985 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-01-31 02:34:03,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:34:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16003 backedges. 2206 proven. 5985 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-01-31 02:34:04,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203115166] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:34:04,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:34:04,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 73 [2022-01-31 02:34:04,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617065823] [2022-01-31 02:34:04,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:34:04,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-31 02:34:04,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:34:04,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-31 02:34:04,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2226, Invalid=3030, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 02:34:04,347 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) [2022-01-31 02:34:06,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:34:06,085 INFO L93 Difference]: Finished difference Result 534 states and 536 transitions. [2022-01-31 02:34:06,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-31 02:34:06,086 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 [2022-01-31 02:34:06,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:34:06,087 INFO L225 Difference]: With dead ends: 534 [2022-01-31 02:34:06,088 INFO L226 Difference]: Without dead ends: 532 [2022-01-31 02:34:06,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1365 GetRequests, 1223 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3368 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=6670, Invalid=13352, Unknown=0, NotChecked=0, Total=20022 [2022-01-31 02:34:06,089 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 164 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:34:06,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 45 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:34:06,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-01-31 02:34:06,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 528. [2022-01-31 02:34:06,167 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) [2022-01-31 02:34:06,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 529 transitions. [2022-01-31 02:34:06,168 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 529 transitions. Word has length 518 [2022-01-31 02:34:06,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:34:06,169 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 529 transitions. [2022-01-31 02:34:06,169 INFO L471 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) [2022-01-31 02:34:06,169 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 529 transitions. [2022-01-31 02:34:06,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-01-31 02:34:06,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:34:06,171 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 65, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:34:06,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-01-31 02:34:06,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:34:06,373 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:34:06,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:34:06,373 INFO L85 PathProgramCache]: Analyzing trace with hash -909280409, now seen corresponding path program 127 times [2022-01-31 02:34:06,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:34:06,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561423725] [2022-01-31 02:34:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:34:06,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:34:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:34:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-31 02:34:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:34:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:34:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:34:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:34:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:34:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:34:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:34:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:34:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:34:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:34:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:34:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:34:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:34:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:34:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:34:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:34:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:34:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:34:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:34:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:34:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:34:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:34:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:34:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 02:34:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 02:34:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 02:34:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 02:34:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 02:34:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 02:34:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 02:34:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 02:34:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 02:34:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 02:34:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 02:34:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 02:34:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 02:34:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 02:34:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 02:34:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 02:34:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 02:34:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 02:34:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 02:34:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 02:34:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 02:34:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 02:34:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 02:34:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 02:34:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 02:34:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 02:34:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 02:34:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 02:34:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 02:34:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 02:34:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 02:34:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 02:34:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-01-31 02:34:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-01-31 02:34:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 02:34:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 02:34:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 02:34:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-01-31 02:34:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-01-31 02:34:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 02:34:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6304 proven. 2080 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-01-31 02:34:10,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:34:10,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561423725] [2022-01-31 02:34:10,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561423725] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:34:10,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189622963] [2022-01-31 02:34:10,564 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:34:10,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:34:10,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:34:10,568 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) [2022-01-31 02:34:10,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-01-31 02:34:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:10,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 132 conjunts are in the unsatisfiable core [2022-01-31 02:34:10,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:34:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6304 proven. 2080 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-01-31 02:34:11,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:34:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6304 proven. 2080 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-01-31 02:34:12,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189622963] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:34:12,225 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:34:12,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 133, 133] total 135 [2022-01-31 02:34:12,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467876011] [2022-01-31 02:34:12,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:34:12,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2022-01-31 02:34:12,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:34:12,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2022-01-31 02:34:12,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4492, Invalid=13598, Unknown=0, NotChecked=0, Total=18090 [2022-01-31 02:34:12,228 INFO L87 Difference]: Start difference. First operand 528 states and 529 transitions. Second operand has 135 states, 135 states have (on average 1.5333333333333334) internal successors, (207), 134 states have internal predecessors, (207), 66 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-01-31 02:34:17,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:34:17,917 INFO L93 Difference]: Finished difference Result 732 states and 798 transitions. [2022-01-31 02:34:17,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-01-31 02:34:17,917 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 1.5333333333333334) internal successors, (207), 134 states have internal predecessors, (207), 66 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Word has length 525 [2022-01-31 02:34:17,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:34:17,918 INFO L225 Difference]: With dead ends: 732 [2022-01-31 02:34:17,918 INFO L226 Difference]: Without dead ends: 529 [2022-01-31 02:34:17,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1178 SyntacticMatches, 1 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17281 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=13599, Invalid=56891, Unknown=0, NotChecked=0, Total=70490 [2022-01-31 02:34:17,921 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 19 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2945 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 02:34:17,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 142 Invalid, 3213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2945 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 02:34:17,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-01-31 02:34:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2022-01-31 02:34:17,988 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) [2022-01-31 02:34:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 530 transitions. [2022-01-31 02:34:17,988 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 530 transitions. Word has length 525 [2022-01-31 02:34:17,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:34:17,989 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 530 transitions. [2022-01-31 02:34:17,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 1.5333333333333334) internal successors, (207), 134 states have internal predecessors, (207), 66 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-01-31 02:34:17,989 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 530 transitions. [2022-01-31 02:34:17,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2022-01-31 02:34:17,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:34:17,991 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:34:18,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-01-31 02:34:18,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-01-31 02:34:18,192 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:34:18,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:34:18,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1571532083, now seen corresponding path program 128 times [2022-01-31 02:34:18,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:34:18,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474880992] [2022-01-31 02:34:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:34:18,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:34:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:34:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:34:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:34:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:34:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:34:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:34:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:34:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:34:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:34:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:34:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:34:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:34:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:34:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:34:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:34:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:34:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:34:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:34:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:34:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:34:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:34:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:34:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:34:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:34:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:34:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:34:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 02:34:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 02:34:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 02:34:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 02:34:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 02:34:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 02:34:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 02:34:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 02:34:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 02:34:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 02:34:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 02:34:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 02:34:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 02:34:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 02:34:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 02:34:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 02:34:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 02:34:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 02:34:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 02:34:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 02:34:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 02:34:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 02:34:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 02:34:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 02:34:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 02:34:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 02:34:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 02:34:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 02:34:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 02:34:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 02:34:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 02:34:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 02:34:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-01-31 02:34:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-01-31 02:34:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 02:34:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 02:34:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 02:34:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-01-31 02:34:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-01-31 02:34:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 16513 backedges. 2208 proven. 6241 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-01-31 02:34:19,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:34:19,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474880992] [2022-01-31 02:34:19,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474880992] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:34:19,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217580800] [2022-01-31 02:34:19,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:34:19,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:34:19,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:34:19,947 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) [2022-01-31 02:34:19,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-01-31 02:34:20,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:34:20,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:34:20,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1277 conjuncts, 133 conjunts are in the unsatisfiable core [2022-01-31 02:34:20,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:34:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 16513 backedges. 2273 proven. 6176 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-01-31 02:34:20,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:34:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16513 backedges. 2273 proven. 6176 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-01-31 02:34:21,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217580800] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:34:21,606 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:34:21,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70, 70] total 74 [2022-01-31 02:34:21,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790879381] [2022-01-31 02:34:21,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:34:21,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-31 02:34:21,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:34:21,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-31 02:34:21,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2293, Invalid=3109, Unknown=0, NotChecked=0, Total=5402 [2022-01-31 02:34:21,608 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) [2022-01-31 02:34:23,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:34:23,427 INFO L93 Difference]: Finished difference Result 542 states and 544 transitions. [2022-01-31 02:34:23,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-31 02:34:23,427 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 [2022-01-31 02:34:23,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:34:23,428 INFO L225 Difference]: With dead ends: 542 [2022-01-31 02:34:23,428 INFO L226 Difference]: Without dead ends: 540 [2022-01-31 02:34:23,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1386 GetRequests, 1242 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3453 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=6871, Invalid=13721, Unknown=0, NotChecked=0, Total=20592 [2022-01-31 02:34:23,429 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 167 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 02:34:23,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 65 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 02:34:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-01-31 02:34:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 536. [2022-01-31 02:34:23,505 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) [2022-01-31 02:34:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 537 transitions. [2022-01-31 02:34:23,506 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 537 transitions. Word has length 526 [2022-01-31 02:34:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:34:23,506 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 537 transitions. [2022-01-31 02:34:23,506 INFO L471 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) [2022-01-31 02:34:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 537 transitions. [2022-01-31 02:34:23,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-01-31 02:34:23,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:34:23,508 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:34:23,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-01-31 02:34:23,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-01-31 02:34:23,709 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:34:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:34:23,709 INFO L85 PathProgramCache]: Analyzing trace with hash 671982726, now seen corresponding path program 129 times [2022-01-31 02:34:23,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:34:23,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653287542] [2022-01-31 02:34:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:34:23,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:34:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:34:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-31 02:34:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:34:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:34:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:34:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:34:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:34:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:34:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:34:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:34:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:34:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:34:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:34:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:34:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:34:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:34:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:34:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:34:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:34:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:34:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:34:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:34:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:34:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:34:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:34:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:34:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 02:34:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 02:34:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 02:34:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 02:34:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 02:34:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 02:34:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 02:34:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 02:34:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 02:34:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 02:34:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 02:34:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 02:34:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 02:34:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 02:34:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 02:34:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 02:34:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 02:34:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 02:34:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 02:34:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 02:34:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 02:34:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 02:34:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 02:34:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 02:34:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 02:34:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 02:34:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 02:34:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 02:34:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 02:34:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 02:34:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 02:34:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 02:34:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-01-31 02:34:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-01-31 02:34:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 02:34:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 02:34:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 02:34:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-01-31 02:34:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-01-31 02:34:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 02:34:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 16965 backedges. 6500 proven. 2145 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-01-31 02:34:27,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:34:27,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653287542] [2022-01-31 02:34:27,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653287542] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:34:27,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907433568] [2022-01-31 02:34:27,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:34:27,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:34:27,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:34:27,991 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) [2022-01-31 02:34:27,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-01-31 02:34:28,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2022-01-31 02:34:28,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:34:28,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 134 conjunts are in the unsatisfiable core [2022-01-31 02:34:28,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:34:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16965 backedges. 6500 proven. 2145 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-01-31 02:34:28,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:34:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 16965 backedges. 6500 proven. 2145 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-01-31 02:34:29,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907433568] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:34:29,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:34:29,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 135, 135] total 137 [2022-01-31 02:34:29,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968521871] [2022-01-31 02:34:29,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:34:29,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-01-31 02:34:29,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:34:29,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-01-31 02:34:29,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4627, Invalid=14005, Unknown=0, NotChecked=0, Total=18632 [2022-01-31 02:34:29,794 INFO L87 Difference]: Start difference. First operand 536 states and 537 transitions. Second operand has 137 states, 137 states have (on average 1.532846715328467) internal successors, (210), 136 states have internal predecessors, (210), 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) [2022-01-31 02:34:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:34:35,340 INFO L93 Difference]: Finished difference Result 743 states and 810 transitions. [2022-01-31 02:34:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-01-31 02:34:35,341 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 1.532846715328467) internal successors, (210), 136 states have internal predecessors, (210), 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 533 [2022-01-31 02:34:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:34:35,342 INFO L225 Difference]: With dead ends: 743 [2022-01-31 02:34:35,342 INFO L226 Difference]: Without dead ends: 537 [2022-01-31 02:34:35,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1465 GetRequests, 1196 SyntacticMatches, 1 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17811 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=14006, Invalid=58624, Unknown=0, NotChecked=0, Total=72630 [2022-01-31 02:34:35,345 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 02:34:35,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 118 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 02:34:35,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-01-31 02:34:35,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2022-01-31 02:34:35,420 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) [2022-01-31 02:34:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 538 transitions. [2022-01-31 02:34:35,421 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 538 transitions. Word has length 533 [2022-01-31 02:34:35,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:34:35,421 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 538 transitions. [2022-01-31 02:34:35,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 1.532846715328467) internal successors, (210), 136 states have internal predecessors, (210), 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) [2022-01-31 02:34:35,421 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 538 transitions. [2022-01-31 02:34:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-01-31 02:34:35,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:34:35,423 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:34:35,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-01-31 02:34:35,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:34:35,624 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:34:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:34:35,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1492011540, now seen corresponding path program 130 times [2022-01-31 02:34:35,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:34:35,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849035331] [2022-01-31 02:34:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:34:35,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:34:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:34:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:34:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:34:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:34:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:34:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:34:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:34:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:34:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:34:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:34:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:34:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:34:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:34:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:34:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:34:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:34:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:34:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:34:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:34:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:34:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:34:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:34:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:34:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:34:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:34:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:34:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:34:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 02:34:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 02:34:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 02:34:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 02:34:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 02:34:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 02:34:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 02:34:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 02:34:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 02:34:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 02:34:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 02:34:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 02:34:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 02:34:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 02:34:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 02:34:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 02:34:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 02:34:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 02:34:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 02:34:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 02:34:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 02:34:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 02:34:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 02:34:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 02:34:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-01-31 02:34:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 02:34:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 02:34:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 02:34:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 02:34:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-01-31 02:34:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 02:34:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 02:34:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-01-31 02:34:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-01-31 02:34:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 02:34:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 02:34:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 02:34:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-01-31 02:34:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-01-31 02:34:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:37,391 INFO L134 CoverageAnalysis]: Checked inductivity of 17031 backedges. 2275 proven. 6436 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-01-31 02:34:37,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:34:37,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849035331] [2022-01-31 02:34:37,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849035331] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:34:37,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326262015] [2022-01-31 02:34:37,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:34:37,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:34:37,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:34:37,392 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) [2022-01-31 02:34:37,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-01-31 02:34:37,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:34:37,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:34:37,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 135 conjunts are in the unsatisfiable core [2022-01-31 02:34:37,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:34:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17031 backedges. 2341 proven. 6370 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-01-31 02:34:38,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:34:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 17031 backedges. 2341 proven. 6370 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-01-31 02:34:39,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326262015] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:34:39,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:34:39,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 75 [2022-01-31 02:34:39,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720657654] [2022-01-31 02:34:39,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:34:39,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-31 02:34:39,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:34:39,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-31 02:34:39,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2361, Invalid=3189, Unknown=0, NotChecked=0, Total=5550 [2022-01-31 02:34:39,089 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) [2022-01-31 02:34:40,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:34:40,943 INFO L93 Difference]: Finished difference Result 550 states and 552 transitions. [2022-01-31 02:34:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-31 02:34:40,944 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 [2022-01-31 02:34:40,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:34:40,945 INFO L225 Difference]: With dead ends: 550 [2022-01-31 02:34:40,945 INFO L226 Difference]: Without dead ends: 548 [2022-01-31 02:34:40,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1407 GetRequests, 1261 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3539 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=7075, Invalid=14095, Unknown=0, NotChecked=0, Total=21170 [2022-01-31 02:34:40,946 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 169 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:34:40,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 45 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:34:40,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-01-31 02:34:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 544. [2022-01-31 02:34:41,015 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) [2022-01-31 02:34:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 545 transitions. [2022-01-31 02:34:41,016 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 545 transitions. Word has length 534 [2022-01-31 02:34:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:34:41,016 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 545 transitions. [2022-01-31 02:34:41,016 INFO L471 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) [2022-01-31 02:34:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 545 transitions. [2022-01-31 02:34:41,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-01-31 02:34:41,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:34:41,018 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 67, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:34:41,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-01-31 02:34:41,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:34:41,219 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:34:41,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:34:41,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1833914503, now seen corresponding path program 131 times [2022-01-31 02:34:41,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:34:41,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159958518] [2022-01-31 02:34:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:34:41,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:34:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:34:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-31 02:34:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:34:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:34:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:34:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:34:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:34:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:34:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:34:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:34:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:34:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:34:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:34:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:34:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:34:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:34:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:34:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:34:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:34:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:34:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:34:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:34:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:34:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:34:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:34:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:34:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:34:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 02:34:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 02:34:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 02:34:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 02:34:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 02:34:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 02:34:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 02:34:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 02:34:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 02:34:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 02:34:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 02:34:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 02:34:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 02:34:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 02:34:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 02:34:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 02:34:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 02:34:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 02:34:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 02:34:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 02:34:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 02:34:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 02:34:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 02:34:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 02:34:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-01-31 02:34:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 02:34:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 02:34:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 02:34:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 02:34:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-01-31 02:34:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 02:34:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 02:34:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-01-31 02:34:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-01-31 02:34:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 02:34:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 02:34:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 02:34:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-01-31 02:34:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-01-31 02:34:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-01-31 02:34:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 17490 backedges. 6699 proven. 2211 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-01-31 02:34:45,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:34:45,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159958518] [2022-01-31 02:34:45,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159958518] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:34:45,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236191770] [2022-01-31 02:34:45,647 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:34:45,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:34:45,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:34:45,648 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) [2022-01-31 02:34:45,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-01-31 02:34:45,902 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2022-01-31 02:34:45,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:34:45,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 136 conjunts are in the unsatisfiable core [2022-01-31 02:34:45,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:34:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 17490 backedges. 6699 proven. 2211 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-01-31 02:34:46,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:34:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 17490 backedges. 6699 proven. 2211 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-01-31 02:34:47,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236191770] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:34:47,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:34:47,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 137, 137] total 139 [2022-01-31 02:34:47,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088720084] [2022-01-31 02:34:47,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:34:47,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-01-31 02:34:47,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:34:47,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-01-31 02:34:47,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4764, Invalid=14418, Unknown=0, NotChecked=0, Total=19182 [2022-01-31 02:34:47,448 INFO L87 Difference]: Start difference. First operand 544 states and 545 transitions. Second operand has 139 states, 139 states have (on average 1.5323741007194245) internal successors, (213), 138 states have internal predecessors, (213), 68 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-01-31 02:34:53,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:34:53,309 INFO L93 Difference]: Finished difference Result 754 states and 822 transitions. [2022-01-31 02:34:53,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-31 02:34:53,310 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 1.5323741007194245) internal successors, (213), 138 states have internal predecessors, (213), 68 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 541 [2022-01-31 02:34:53,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:34:53,311 INFO L225 Difference]: With dead ends: 754 [2022-01-31 02:34:53,311 INFO L226 Difference]: Without dead ends: 545 [2022-01-31 02:34:53,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1487 GetRequests, 1214 SyntacticMatches, 1 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18349 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=14419, Invalid=60383, Unknown=0, NotChecked=0, Total=74802 [2022-01-31 02:34:53,315 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 02:34:53,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 129 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2512 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 02:34:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-01-31 02:34:53,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2022-01-31 02:34:53,386 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) [2022-01-31 02:34:53,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 546 transitions. [2022-01-31 02:34:53,387 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 546 transitions. Word has length 541 [2022-01-31 02:34:53,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:34:53,387 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 546 transitions. [2022-01-31 02:34:53,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 1.5323741007194245) internal successors, (213), 138 states have internal predecessors, (213), 68 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-01-31 02:34:53,387 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 546 transitions. [2022-01-31 02:34:53,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-01-31 02:34:53,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:34:53,408 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:34:53,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-01-31 02:34:53,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2022-01-31 02:34:53,608 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:34:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:34:53,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1190566893, now seen corresponding path program 132 times [2022-01-31 02:34:53,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:34:53,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441700863] [2022-01-31 02:34:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:34:53,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:34:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:34:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:34:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:34:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:34:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:34:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:34:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:34:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:34:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:34:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:34:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:34:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:34:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:34:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:34:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:34:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:34:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:34:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:34:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:34:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:34:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:34:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:34:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:34:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:34:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:34:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:34:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:34:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:34:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 02:34:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 02:34:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 02:34:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 02:34:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 02:34:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 02:34:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 02:34:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 02:34:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 02:34:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 02:34:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 02:34:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 02:34:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 02:34:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 02:34:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 02:34:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 02:34:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 02:34:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 02:34:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 02:34:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 02:34:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 02:34:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 02:34:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 02:34:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 02:34:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-01-31 02:34:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 02:34:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 02:34:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 02:34:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 02:34:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-01-31 02:34:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-01-31 02:34:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 02:34:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-01-31 02:34:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-01-31 02:34:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 02:34:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 02:34:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 02:34:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-01-31 02:34:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-01-31 02:34:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:34:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 17557 backedges. 2343 proven. 6634 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-01-31 02:34:55,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:34:55,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441700863] [2022-01-31 02:34:55,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441700863] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:34:55,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649387681] [2022-01-31 02:34:55,431 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:34:55,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:34:55,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:34:55,432 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) [2022-01-31 02:34:55,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-01-31 02:34:55,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2022-01-31 02:34:55,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:34:55,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 137 conjunts are in the unsatisfiable core [2022-01-31 02:34:55,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:34:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 17557 backedges. 2410 proven. 6567 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-01-31 02:34:56,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:34:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 17557 backedges. 2410 proven. 6567 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-01-31 02:34:57,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649387681] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:34:57,270 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:34:57,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72, 72] total 76 [2022-01-31 02:34:57,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656803285] [2022-01-31 02:34:57,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:34:57,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-31 02:34:57,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:34:57,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-31 02:34:57,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2430, Invalid=3270, Unknown=0, NotChecked=0, Total=5700 [2022-01-31 02:34:57,272 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) [2022-01-31 02:34:59,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:34:59,244 INFO L93 Difference]: Finished difference Result 558 states and 560 transitions. [2022-01-31 02:34:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-31 02:34:59,244 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 [2022-01-31 02:34:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:34:59,246 INFO L225 Difference]: With dead ends: 558 [2022-01-31 02:34:59,246 INFO L226 Difference]: Without dead ends: 556 [2022-01-31 02:34:59,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1428 GetRequests, 1280 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=7282, Invalid=14474, Unknown=0, NotChecked=0, Total=21756 [2022-01-31 02:34:59,247 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 165 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 02:34:59,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 65 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 02:34:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-01-31 02:34:59,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 552. [2022-01-31 02:34:59,352 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) [2022-01-31 02:34:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 553 transitions. [2022-01-31 02:34:59,353 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 553 transitions. Word has length 542 [2022-01-31 02:34:59,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:34:59,354 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 553 transitions. [2022-01-31 02:34:59,354 INFO L471 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) [2022-01-31 02:34:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 553 transitions. [2022-01-31 02:34:59,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2022-01-31 02:34:59,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:34:59,357 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:34:59,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-01-31 02:34:59,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-01-31 02:34:59,586 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:34:59,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:34:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1692608666, now seen corresponding path program 133 times [2022-01-31 02:34:59,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:34:59,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123075929] [2022-01-31 02:34:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:34:59,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:34:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:35:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-31 02:35:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:35:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:35:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:35:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:35:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:35:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:35:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:35:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:35:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:35:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:35:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:35:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:35:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:35:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:35:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:35:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:35:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:35:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:35:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:35:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:35:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:35:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:35:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:35:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:35:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:35:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:35:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 02:35:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 02:35:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 02:35:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 02:35:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 02:35:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 02:35:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 02:35:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 02:35:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 02:35:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 02:35:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 02:35:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 02:35:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 02:35:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 02:35:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 02:35:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 02:35:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 02:35:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 02:35:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 02:35:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 02:35:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 02:35:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 02:35:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 02:35:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 02:35:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-01-31 02:35:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 02:35:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 02:35:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 02:35:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 02:35:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-01-31 02:35:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-01-31 02:35:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 02:35:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-01-31 02:35:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-01-31 02:35:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 02:35:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 02:35:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 02:35:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-01-31 02:35:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-01-31 02:35:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-01-31 02:35:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 18023 backedges. 6901 proven. 2278 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-01-31 02:35:04,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:35:04,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123075929] [2022-01-31 02:35:04,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123075929] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:35:04,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225260582] [2022-01-31 02:35:04,165 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:35:04,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:35:04,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:35:04,166 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) [2022-01-31 02:35:04,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-01-31 02:35:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:04,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 138 conjunts are in the unsatisfiable core [2022-01-31 02:35:04,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:35:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 18023 backedges. 6901 proven. 2278 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-01-31 02:35:05,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:35:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 18023 backedges. 6901 proven. 2278 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-01-31 02:35:05,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225260582] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:35:05,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:35:05,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 139, 139] total 141 [2022-01-31 02:35:05,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165775042] [2022-01-31 02:35:05,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:35:05,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-01-31 02:35:05,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:35:05,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-01-31 02:35:05,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4903, Invalid=14837, Unknown=0, NotChecked=0, Total=19740 [2022-01-31 02:35:05,882 INFO L87 Difference]: Start difference. First operand 552 states and 553 transitions. Second operand has 141 states, 141 states have (on average 1.5319148936170213) internal successors, (216), 140 states have internal predecessors, (216), 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) [2022-01-31 02:35:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:35:11,980 INFO L93 Difference]: Finished difference Result 765 states and 834 transitions. [2022-01-31 02:35:11,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-31 02:35:11,980 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 1.5319148936170213) internal successors, (216), 140 states have internal predecessors, (216), 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 549 [2022-01-31 02:35:11,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:35:11,982 INFO L225 Difference]: With dead ends: 765 [2022-01-31 02:35:11,982 INFO L226 Difference]: Without dead ends: 553 [2022-01-31 02:35:11,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1509 GetRequests, 1232 SyntacticMatches, 1 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18895 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=14838, Invalid=62168, Unknown=0, NotChecked=0, Total=77006 [2022-01-31 02:35:11,985 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2864 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 02:35:11,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 125 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2864 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 02:35:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-01-31 02:35:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-01-31 02:35:12,058 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) [2022-01-31 02:35:12,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 554 transitions. [2022-01-31 02:35:12,059 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 554 transitions. Word has length 549 [2022-01-31 02:35:12,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:35:12,059 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 554 transitions. [2022-01-31 02:35:12,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 1.5319148936170213) internal successors, (216), 140 states have internal predecessors, (216), 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) [2022-01-31 02:35:12,059 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 554 transitions. [2022-01-31 02:35:12,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2022-01-31 02:35:12,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:35:12,061 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:35:12,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2022-01-31 02:35:12,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-01-31 02:35:12,262 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:35:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:35:12,262 INFO L85 PathProgramCache]: Analyzing trace with hash -41067316, now seen corresponding path program 134 times [2022-01-31 02:35:12,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:35:12,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025124861] [2022-01-31 02:35:12,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:35:12,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:35:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:35:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:35:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:35:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:35:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:35:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:35:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:35:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:35:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:35:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:35:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:35:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:35:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:35:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:35:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:35:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:35:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:35:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:35:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:35:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:35:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:35:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 02:35:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 02:35:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 02:35:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 02:35:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 02:35:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 02:35:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 02:35:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 02:35:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 02:35:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 02:35:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 02:35:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 02:35:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 02:35:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 02:35:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 02:35:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 02:35:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 02:35:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 02:35:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 02:35:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 02:35:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 02:35:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 02:35:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 02:35:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 02:35:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 02:35:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 02:35:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 02:35:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 02:35:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 02:35:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 02:35:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 02:35:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 02:35:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-01-31 02:35:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-01-31 02:35:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 02:35:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 02:35:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 02:35:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-01-31 02:35:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-01-31 02:35:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 02:35:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-01-31 02:35:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-01-31 02:35:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 02:35:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-01-31 02:35:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 02:35:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-01-31 02:35:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-01-31 02:35:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18091 backedges. 2412 proven. 6835 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-01-31 02:35:14,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:35:14,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025124861] [2022-01-31 02:35:14,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025124861] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:35:14,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783438077] [2022-01-31 02:35:14,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:35:14,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:35:14,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:35:14,140 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) [2022-01-31 02:35:14,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-01-31 02:35:14,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:35:14,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:35:14,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 139 conjunts are in the unsatisfiable core [2022-01-31 02:35:14,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:35:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18091 backedges. 2480 proven. 6767 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-01-31 02:35:15,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:35:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 18091 backedges. 2480 proven. 6767 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-01-31 02:35:15,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783438077] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:35:15,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:35:15,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73, 73] total 77 [2022-01-31 02:35:15,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156080387] [2022-01-31 02:35:15,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:35:15,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-31 02:35:15,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:35:15,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-31 02:35:15,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2500, Invalid=3352, Unknown=0, NotChecked=0, Total=5852 [2022-01-31 02:35:15,882 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) [2022-01-31 02:35:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:35:17,736 INFO L93 Difference]: Finished difference Result 566 states and 568 transitions. [2022-01-31 02:35:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-31 02:35:17,736 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 [2022-01-31 02:35:17,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:35:17,737 INFO L225 Difference]: With dead ends: 566 [2022-01-31 02:35:17,737 INFO L226 Difference]: Without dead ends: 564 [2022-01-31 02:35:17,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1449 GetRequests, 1299 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3714 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=7492, Invalid=14858, Unknown=0, NotChecked=0, Total=22350 [2022-01-31 02:35:17,738 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 174 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-31 02:35:17,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 45 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-31 02:35:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-31 02:35:17,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2022-01-31 02:35:17,812 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) [2022-01-31 02:35:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 561 transitions. [2022-01-31 02:35:17,812 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 561 transitions. Word has length 550 [2022-01-31 02:35:17,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:35:17,813 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 561 transitions. [2022-01-31 02:35:17,813 INFO L471 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) [2022-01-31 02:35:17,813 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 561 transitions. [2022-01-31 02:35:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-01-31 02:35:17,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:35:17,815 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 69, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:35:17,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2022-01-31 02:35:18,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-01-31 02:35:18,015 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:35:18,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:35:18,016 INFO L85 PathProgramCache]: Analyzing trace with hash -829149785, now seen corresponding path program 135 times [2022-01-31 02:35:18,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:35:18,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580688198] [2022-01-31 02:35:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:35:18,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:35:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:35:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-01-31 02:35:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-31 02:35:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-31 02:35:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-31 02:35:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-31 02:35:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-31 02:35:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-01-31 02:35:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-01-31 02:35:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-31 02:35:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-01-31 02:35:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-01-31 02:35:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-01-31 02:35:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-01-31 02:35:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-01-31 02:35:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-31 02:35:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-01-31 02:35:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-01-31 02:35:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-01-31 02:35:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-01-31 02:35:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-01-31 02:35:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-01-31 02:35:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-01-31 02:35:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-01-31 02:35:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-01-31 02:35:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-01-31 02:35:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-01-31 02:35:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-01-31 02:35:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-01-31 02:35:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-01-31 02:35:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-01-31 02:35:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-01-31 02:35:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-01-31 02:35:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-01-31 02:35:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-01-31 02:35:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-01-31 02:35:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-01-31 02:35:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-01-31 02:35:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-01-31 02:35:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-01-31 02:35:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-01-31 02:35:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-01-31 02:35:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-01-31 02:35:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-01-31 02:35:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-01-31 02:35:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-01-31 02:35:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-01-31 02:35:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-01-31 02:35:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-01-31 02:35:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-01-31 02:35:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-01-31 02:35:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-01-31 02:35:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-01-31 02:35:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-01-31 02:35:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-01-31 02:35:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-01-31 02:35:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-01-31 02:35:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-01-31 02:35:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-01-31 02:35:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-01-31 02:35:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-01-31 02:35:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-01-31 02:35:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-01-31 02:35:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-01-31 02:35:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-01-31 02:35:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-01-31 02:35:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-01-31 02:35:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-01-31 02:35:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-01-31 02:35:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 7106 proven. 2346 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-01-31 02:35:22,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:35:22,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580688198] [2022-01-31 02:35:22,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580688198] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:35:22,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166068689] [2022-01-31 02:35:22,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:35:22,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:35:22,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:35:22,702 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) [2022-01-31 02:35:22,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-01-31 02:35:23,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2022-01-31 02:35:23,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:35:23,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 140 conjunts are in the unsatisfiable core [2022-01-31 02:35:23,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:35:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 7106 proven. 2346 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-01-31 02:35:23,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:35:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 7106 proven. 2346 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-01-31 02:35:24,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166068689] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:35:24,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:35:24,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 141, 141] total 143 [2022-01-31 02:35:24,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871607270] [2022-01-31 02:35:24,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:35:24,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2022-01-31 02:35:24,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:35:24,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2022-01-31 02:35:24,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5044, Invalid=15262, Unknown=0, NotChecked=0, Total=20306 [2022-01-31 02:35:24,586 INFO L87 Difference]: Start difference. First operand 560 states and 561 transitions. Second operand has 143 states, 143 states have (on average 1.5314685314685315) internal successors, (219), 142 states have internal predecessors, (219), 70 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-01-31 02:35:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:35:31,004 INFO L93 Difference]: Finished difference Result 776 states and 846 transitions. [2022-01-31 02:35:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-31 02:35:31,004 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 1.5314685314685315) internal successors, (219), 142 states have internal predecessors, (219), 70 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Word has length 557 [2022-01-31 02:35:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:35:31,005 INFO L225 Difference]: With dead ends: 776 [2022-01-31 02:35:31,005 INFO L226 Difference]: Without dead ends: 561 [2022-01-31 02:35:31,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1531 GetRequests, 1250 SyntacticMatches, 1 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19449 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=15263, Invalid=63979, Unknown=0, NotChecked=0, Total=79242 [2022-01-31 02:35:31,009 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 19 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3426 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 3426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:35:31,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 141 Invalid, 3709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 3426 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 02:35:31,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-31 02:35:31,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-01-31 02:35:31,083 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) [2022-01-31 02:35:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 562 transitions. [2022-01-31 02:35:31,084 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 562 transitions. Word has length 557 [2022-01-31 02:35:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:35:31,084 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 562 transitions. [2022-01-31 02:35:31,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 1.5314685314685315) internal successors, (219), 142 states have internal predecessors, (219), 70 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-01-31 02:35:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 562 transitions. [2022-01-31 02:35:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2022-01-31 02:35:31,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:35:31,087 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:35:31,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-01-31 02:35:31,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-01-31 02:35:31,287 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:35:31,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:35:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1643375885, now seen corresponding path program 136 times [2022-01-31 02:35:31,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:35:31,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068336880] [2022-01-31 02:35:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:35:31,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:35:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:35:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:35:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:35:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:35:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:35:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:35:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:35:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:35:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:35:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:35:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:35:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:35:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:35:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:35:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:35:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:35:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:35:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:35:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:35:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:35:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:35:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:35:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 02:35:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 02:35:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 02:35:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 02:35:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 02:35:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 02:35:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 02:35:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 02:35:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 02:35:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 02:35:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 02:35:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 02:35:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 02:35:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 02:35:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 02:35:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 02:35:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 02:35:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 02:35:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 02:35:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 02:35:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 02:35:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 02:35:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 02:35:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 02:35:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 02:35:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 02:35:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 02:35:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 02:35:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 02:35:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 02:35:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 02:35:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 02:35:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-01-31 02:35:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-01-31 02:35:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 02:35:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 02:35:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 02:35:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-01-31 02:35:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-01-31 02:35:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 02:35:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2022-01-31 02:35:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-01-31 02:35:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 02:35:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-01-31 02:35:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 02:35:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-01-31 02:35:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-01-31 02:35:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 18633 backedges. 2482 proven. 7039 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-01-31 02:35:33,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:35:33,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068336880] [2022-01-31 02:35:33,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068336880] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:35:33,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581331133] [2022-01-31 02:35:33,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:35:33,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:35:33,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:35:33,198 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) [2022-01-31 02:35:33,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-01-31 02:35:33,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:35:33,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:35:33,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 141 conjunts are in the unsatisfiable core [2022-01-31 02:35:33,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:35:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18633 backedges. 2551 proven. 6970 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-01-31 02:35:34,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:35:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18633 backedges. 2551 proven. 6970 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-01-31 02:35:34,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581331133] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:35:34,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:35:34,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74, 74] total 78 [2022-01-31 02:35:34,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587483453] [2022-01-31 02:35:34,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:35:34,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-01-31 02:35:34,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:35:34,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-01-31 02:35:34,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2571, Invalid=3435, Unknown=0, NotChecked=0, Total=6006 [2022-01-31 02:35:34,978 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) [2022-01-31 02:35:36,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:35:36,975 INFO L93 Difference]: Finished difference Result 574 states and 576 transitions. [2022-01-31 02:35:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-31 02:35:36,975 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 [2022-01-31 02:35:36,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:35:36,976 INFO L225 Difference]: With dead ends: 574 [2022-01-31 02:35:36,976 INFO L226 Difference]: Without dead ends: 572 [2022-01-31 02:35:36,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1318 SyntacticMatches, 2 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3803 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=7705, Invalid=15247, Unknown=0, NotChecked=0, Total=22952 [2022-01-31 02:35:36,978 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 172 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 02:35:36,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 80 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 02:35:36,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-01-31 02:35:37,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 568. [2022-01-31 02:35:37,053 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) [2022-01-31 02:35:37,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 569 transitions. [2022-01-31 02:35:37,054 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 569 transitions. Word has length 558 [2022-01-31 02:35:37,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:35:37,054 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 569 transitions. [2022-01-31 02:35:37,054 INFO L471 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) [2022-01-31 02:35:37,054 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 569 transitions. [2022-01-31 02:35:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-01-31 02:35:37,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:35:37,056 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 70, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:35:37,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-01-31 02:35:37,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-01-31 02:35:37,257 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:35:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:35:37,257 INFO L85 PathProgramCache]: Analyzing trace with hash -724041146, now seen corresponding path program 137 times [2022-01-31 02:35:37,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:35:37,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101431384] [2022-01-31 02:35:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:35:37,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:35:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:35:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-31 02:35:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-01-31 02:35:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-01-31 02:35:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-01-31 02:35:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-31 02:35:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-01-31 02:35:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-31 02:35:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-31 02:35:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-01-31 02:35:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-01-31 02:35:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-01-31 02:35:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-01-31 02:35:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:41,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-01-31 02:35:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-31 02:35:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-01-31 02:35:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-01-31 02:35:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-01-31 02:35:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-01-31 02:35:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-01-31 02:35:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-01-31 02:35:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-01-31 02:35:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-01-31 02:35:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-01-31 02:35:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-01-31 02:35:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-01-31 02:35:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-01-31 02:35:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-01-31 02:35:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-01-31 02:35:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-01-31 02:35:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-01-31 02:35:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-01-31 02:35:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-01-31 02:35:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-01-31 02:35:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-01-31 02:35:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-01-31 02:35:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-01-31 02:35:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-01-31 02:35:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-01-31 02:35:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-01-31 02:35:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-01-31 02:35:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-01-31 02:35:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-01-31 02:35:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-01-31 02:35:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-01-31 02:35:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-01-31 02:35:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-01-31 02:35:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-01-31 02:35:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-01-31 02:35:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-01-31 02:35:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-01-31 02:35:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-01-31 02:35:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-01-31 02:35:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-01-31 02:35:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-01-31 02:35:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-01-31 02:35:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-01-31 02:35:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-01-31 02:35:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-01-31 02:35:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-01-31 02:35:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-01-31 02:35:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-01-31 02:35:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2022-01-31 02:35:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-01-31 02:35:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-01-31 02:35:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-01-31 02:35:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-01-31 02:35:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-01-31 02:35:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-01-31 02:35:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-01-31 02:35:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 19113 backedges. 7314 proven. 2415 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-01-31 02:35:42,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:35:42,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101431384] [2022-01-31 02:35:42,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101431384] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:35:42,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886867309] [2022-01-31 02:35:42,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:35:42,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:35:42,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:35:42,069 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) [2022-01-31 02:35:42,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-01-31 02:35:42,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2022-01-31 02:35:42,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:35:42,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 142 conjunts are in the unsatisfiable core [2022-01-31 02:35:42,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:35:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 19113 backedges. 7314 proven. 2415 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-01-31 02:35:43,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:35:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 19113 backedges. 7314 proven. 2415 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-01-31 02:35:43,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886867309] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:35:43,951 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:35:43,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 143, 143] total 145 [2022-01-31 02:35:43,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966051719] [2022-01-31 02:35:43,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:35:43,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2022-01-31 02:35:43,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:35:43,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2022-01-31 02:35:43,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5187, Invalid=15693, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 02:35:43,954 INFO L87 Difference]: Start difference. First operand 568 states and 569 transitions. Second operand has 145 states, 145 states have (on average 1.5310344827586206) internal successors, (222), 144 states have internal predecessors, (222), 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) [2022-01-31 02:35:50,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:35:50,072 INFO L93 Difference]: Finished difference Result 787 states and 858 transitions. [2022-01-31 02:35:50,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-31 02:35:50,073 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 145 states have (on average 1.5310344827586206) internal successors, (222), 144 states have internal predecessors, (222), 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 565 [2022-01-31 02:35:50,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:35:50,074 INFO L225 Difference]: With dead ends: 787 [2022-01-31 02:35:50,074 INFO L226 Difference]: Without dead ends: 569 [2022-01-31 02:35:50,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1553 GetRequests, 1268 SyntacticMatches, 1 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20011 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=15694, Invalid=65816, Unknown=0, NotChecked=0, Total=81510 [2022-01-31 02:35:50,078 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 02:35:50,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 127 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 02:35:50,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-01-31 02:35:50,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2022-01-31 02:35:50,171 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) [2022-01-31 02:35:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 570 transitions. [2022-01-31 02:35:50,172 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 570 transitions. Word has length 565 [2022-01-31 02:35:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:35:50,172 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 570 transitions. [2022-01-31 02:35:50,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 1.5310344827586206) internal successors, (222), 144 states have internal predecessors, (222), 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) [2022-01-31 02:35:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 570 transitions. [2022-01-31 02:35:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2022-01-31 02:35:50,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:35:50,174 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:35:50,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-01-31 02:35:50,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-01-31 02:35:50,375 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:35:50,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:35:50,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1152582740, now seen corresponding path program 138 times [2022-01-31 02:35:50,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:35:50,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635136378] [2022-01-31 02:35:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:35:50,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:35:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:35:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:35:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:35:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:35:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:35:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:35:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:35:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:35:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:35:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:35:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:35:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:35:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:35:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:35:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:35:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:35:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:35:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:35:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:35:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:35:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:35:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:35:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:35:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 02:35:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 02:35:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 02:35:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 02:35:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 02:35:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 02:35:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 02:35:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 02:35:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 02:35:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 02:35:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 02:35:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 02:35:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 02:35:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 02:35:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 02:35:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 02:35:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 02:35:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 02:35:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 02:35:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 02:35:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 02:35:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 02:35:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 02:35:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 02:35:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 02:35:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 02:35:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 02:35:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 02:35:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 02:35:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 02:35:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 02:35:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 02:35:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-01-31 02:35:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-01-31 02:35:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 02:35:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 02:35:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 02:35:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-01-31 02:35:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-01-31 02:35:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 02:35:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2022-01-31 02:35:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-01-31 02:35:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 02:35:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-01-31 02:35:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 02:35:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-01-31 02:35:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2022-01-31 02:35:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:35:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 19183 backedges. 2553 proven. 7246 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-01-31 02:35:52,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:35:52,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635136378] [2022-01-31 02:35:52,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635136378] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:35:52,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290217954] [2022-01-31 02:35:52,332 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:35:52,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:35:52,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:35:52,333 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) [2022-01-31 02:35:52,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-01-31 02:35:52,629 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2022-01-31 02:35:52,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:35:52,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 143 conjunts are in the unsatisfiable core [2022-01-31 02:35:52,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:35:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 19183 backedges. 2623 proven. 7176 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-01-31 02:35:53,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:35:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 19183 backedges. 2623 proven. 7176 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-01-31 02:35:54,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290217954] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:35:54,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:35:54,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 75] total 79 [2022-01-31 02:35:54,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294737862] [2022-01-31 02:35:54,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:35:54,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-31 02:35:54,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:35:54,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-31 02:35:54,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2643, Invalid=3519, Unknown=0, NotChecked=0, Total=6162 [2022-01-31 02:35:54,224 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) [2022-01-31 02:35:56,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:35:56,332 INFO L93 Difference]: Finished difference Result 582 states and 584 transitions. [2022-01-31 02:35:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-31 02:35:56,333 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 [2022-01-31 02:35:56,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:35:56,334 INFO L225 Difference]: With dead ends: 582 [2022-01-31 02:35:56,334 INFO L226 Difference]: Without dead ends: 580 [2022-01-31 02:35:56,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1491 GetRequests, 1337 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3893 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=7921, Invalid=15641, Unknown=0, NotChecked=0, Total=23562 [2022-01-31 02:35:56,335 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 165 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 02:35:56,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 70 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 02:35:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-01-31 02:35:56,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 576. [2022-01-31 02:35:56,453 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) [2022-01-31 02:35:56,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 577 transitions. [2022-01-31 02:35:56,454 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 577 transitions. Word has length 566 [2022-01-31 02:35:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:35:56,454 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 577 transitions. [2022-01-31 02:35:56,455 INFO L471 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) [2022-01-31 02:35:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 577 transitions. [2022-01-31 02:35:56,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2022-01-31 02:35:56,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:35:56,458 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 71, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:35:56,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-01-31 02:35:56,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-01-31 02:35:56,671 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:35:56,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:35:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash -894561593, now seen corresponding path program 139 times [2022-01-31 02:35:56,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:35:56,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6248372] [2022-01-31 02:35:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:35:56,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:35:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:36:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-31 02:36:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-31 02:36:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-01-31 02:36:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-31 02:36:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-01-31 02:36:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-31 02:36:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-31 02:36:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-31 02:36:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-01-31 02:36:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-31 02:36:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-01-31 02:36:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-01-31 02:36:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-31 02:36:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-01-31 02:36:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-01-31 02:36:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-01-31 02:36:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-01-31 02:36:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-01-31 02:36:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-01-31 02:36:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-01-31 02:36:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-01-31 02:36:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-01-31 02:36:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-01-31 02:36:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-01-31 02:36:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-01-31 02:36:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-01-31 02:36:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-01-31 02:36:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-01-31 02:36:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-01-31 02:36:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-01-31 02:36:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-01-31 02:36:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-01-31 02:36:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-01-31 02:36:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-01-31 02:36:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-01-31 02:36:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-01-31 02:36:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-01-31 02:36:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-01-31 02:36:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-01-31 02:36:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-01-31 02:36:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-01-31 02:36:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-01-31 02:36:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-01-31 02:36:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-01-31 02:36:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-01-31 02:36:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-01-31 02:36:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-01-31 02:36:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-01-31 02:36:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-01-31 02:36:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-01-31 02:36:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-01-31 02:36:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-01-31 02:36:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-01-31 02:36:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-01-31 02:36:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-01-31 02:36:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-01-31 02:36:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-01-31 02:36:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-01-31 02:36:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-01-31 02:36:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-01-31 02:36:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-01-31 02:36:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-01-31 02:36:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2022-01-31 02:36:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-01-31 02:36:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-01-31 02:36:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-01-31 02:36:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-01-31 02:36:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-01-31 02:36:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2022-01-31 02:36:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-01-31 02:36:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 19670 backedges. 7525 proven. 2485 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-01-31 02:36:01,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:36:01,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6248372] [2022-01-31 02:36:01,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6248372] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:36:01,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857537497] [2022-01-31 02:36:01,579 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:36:01,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:36:01,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:36:01,581 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) [2022-01-31 02:36:01,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-01-31 02:36:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:01,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 144 conjunts are in the unsatisfiable core [2022-01-31 02:36:01,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:36:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 19670 backedges. 7525 proven. 2485 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-01-31 02:36:02,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:36:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 19670 backedges. 7525 proven. 2485 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-01-31 02:36:03,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857537497] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:36:03,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:36:03,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 145, 145] total 147 [2022-01-31 02:36:03,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352517763] [2022-01-31 02:36:03,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:36:03,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-01-31 02:36:03,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:36:03,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-01-31 02:36:03,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5332, Invalid=16130, Unknown=0, NotChecked=0, Total=21462 [2022-01-31 02:36:03,409 INFO L87 Difference]: Start difference. First operand 576 states and 577 transitions. Second operand has 147 states, 147 states have (on average 1.530612244897959) internal successors, (225), 146 states have internal predecessors, (225), 72 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-01-31 02:36:09,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:36:09,641 INFO L93 Difference]: Finished difference Result 798 states and 870 transitions. [2022-01-31 02:36:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-01-31 02:36:09,641 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 1.530612244897959) internal successors, (225), 146 states have internal predecessors, (225), 72 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Word has length 573 [2022-01-31 02:36:09,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:36:09,642 INFO L225 Difference]: With dead ends: 798 [2022-01-31 02:36:09,642 INFO L226 Difference]: Without dead ends: 577 [2022-01-31 02:36:09,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1286 SyntacticMatches, 1 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20581 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=16131, Invalid=67679, Unknown=0, NotChecked=0, Total=83810 [2022-01-31 02:36:09,648 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-31 02:36:09,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 123 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-31 02:36:09,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-01-31 02:36:09,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-01-31 02:36:09,791 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) [2022-01-31 02:36:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 578 transitions. [2022-01-31 02:36:09,792 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 578 transitions. Word has length 573 [2022-01-31 02:36:09,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:36:09,792 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 578 transitions. [2022-01-31 02:36:09,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 1.530612244897959) internal successors, (225), 146 states have internal predecessors, (225), 72 states have call successors, (74), 3 states have call predecessors, (74), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-01-31 02:36:09,793 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 578 transitions. [2022-01-31 02:36:09,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2022-01-31 02:36:09,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:36:09,796 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:36:09,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-01-31 02:36:10,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:36:10,007 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:36:10,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:36:10,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1604434387, now seen corresponding path program 140 times [2022-01-31 02:36:10,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:36:10,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912294118] [2022-01-31 02:36:10,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:36:10,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:36:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:36:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:36:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:36:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:36:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:36:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:36:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:36:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:36:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:36:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:36:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:36:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:36:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:36:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:36:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:36:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:36:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:36:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:36:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:36:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:36:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:36:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:36:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:36:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:36:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 02:36:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 02:36:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 02:36:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 02:36:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 02:36:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 02:36:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 02:36:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 02:36:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 02:36:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 02:36:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 02:36:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 02:36:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 02:36:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 02:36:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 02:36:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 02:36:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 02:36:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 02:36:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 02:36:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 02:36:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 02:36:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 02:36:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 02:36:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 02:36:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 02:36:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 02:36:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 02:36:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 02:36:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 02:36:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 02:36:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 02:36:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 02:36:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-01-31 02:36:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-01-31 02:36:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 02:36:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:11,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 02:36:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:12,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 02:36:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-01-31 02:36:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:12,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-01-31 02:36:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:12,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 02:36:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:12,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2022-01-31 02:36:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:12,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-01-31 02:36:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:12,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-01-31 02:36:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:12,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-01-31 02:36:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 02:36:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:12,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-01-31 02:36:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:12,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2022-01-31 02:36:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 19741 backedges. 2625 proven. 7456 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-01-31 02:36:12,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:36:12,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912294118] [2022-01-31 02:36:12,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912294118] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:36:12,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370202737] [2022-01-31 02:36:12,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:36:12,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:36:12,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:36:12,020 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) [2022-01-31 02:36:12,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-01-31 02:36:12,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:36:12,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:36:12,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 145 conjunts are in the unsatisfiable core [2022-01-31 02:36:12,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:36:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 19741 backedges. 2696 proven. 7385 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-01-31 02:36:12,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:36:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 19741 backedges. 2696 proven. 7385 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-01-31 02:36:13,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370202737] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:36:13,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:36:13,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 80 [2022-01-31 02:36:13,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414782710] [2022-01-31 02:36:13,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:36:13,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-31 02:36:13,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:36:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-31 02:36:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2716, Invalid=3604, Unknown=0, NotChecked=0, Total=6320 [2022-01-31 02:36:13,811 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) [2022-01-31 02:36:15,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:36:15,833 INFO L93 Difference]: Finished difference Result 590 states and 592 transitions. [2022-01-31 02:36:15,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-31 02:36:15,833 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 [2022-01-31 02:36:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:36:15,834 INFO L225 Difference]: With dead ends: 590 [2022-01-31 02:36:15,834 INFO L226 Difference]: Without dead ends: 588 [2022-01-31 02:36:15,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1512 GetRequests, 1356 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3984 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=8140, Invalid=16040, Unknown=0, NotChecked=0, Total=24180 [2022-01-31 02:36:15,836 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 174 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 02:36:15,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 55 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 02:36:15,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-01-31 02:36:15,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 584. [2022-01-31 02:36:15,923 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) [2022-01-31 02:36:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 585 transitions. [2022-01-31 02:36:15,924 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 585 transitions. Word has length 574 [2022-01-31 02:36:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:36:15,924 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 585 transitions. [2022-01-31 02:36:15,925 INFO L471 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) [2022-01-31 02:36:15,925 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 585 transitions. [2022-01-31 02:36:15,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-01-31 02:36:15,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:36:15,927 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 72, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:36:15,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2022-01-31 02:36:16,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:36:16,127 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:36:16,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:36:16,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1343412954, now seen corresponding path program 141 times [2022-01-31 02:36:16,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:36:16,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339556533] [2022-01-31 02:36:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:36:16,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:36:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:36:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-31 02:36:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-01-31 02:36:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-01-31 02:36:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-01-31 02:36:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-01-31 02:36:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-31 02:36:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-31 02:36:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-01-31 02:36:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-01-31 02:36:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-01-31 02:36:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-01-31 02:36:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-31 02:36:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-01-31 02:36:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-01-31 02:36:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-01-31 02:36:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-01-31 02:36:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-01-31 02:36:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-01-31 02:36:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-01-31 02:36:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-01-31 02:36:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-01-31 02:36:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-01-31 02:36:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-01-31 02:36:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-01-31 02:36:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-01-31 02:36:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-01-31 02:36:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-01-31 02:36:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-01-31 02:36:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-01-31 02:36:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-01-31 02:36:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-01-31 02:36:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-01-31 02:36:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-01-31 02:36:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-01-31 02:36:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-01-31 02:36:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-01-31 02:36:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-01-31 02:36:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-01-31 02:36:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-01-31 02:36:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-01-31 02:36:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-01-31 02:36:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-01-31 02:36:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-01-31 02:36:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-01-31 02:36:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-01-31 02:36:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-01-31 02:36:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-01-31 02:36:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-01-31 02:36:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-01-31 02:36:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-01-31 02:36:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-01-31 02:36:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-01-31 02:36:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-01-31 02:36:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-01-31 02:36:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-01-31 02:36:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-01-31 02:36:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-01-31 02:36:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-01-31 02:36:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-01-31 02:36:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-01-31 02:36:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-01-31 02:36:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-01-31 02:36:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-01-31 02:36:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2022-01-31 02:36:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-01-31 02:36:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-01-31 02:36:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-01-31 02:36:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-01-31 02:36:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-01-31 02:36:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2022-01-31 02:36:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-01-31 02:36:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 20235 backedges. 7739 proven. 2556 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-01-31 02:36:21,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:36:21,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339556533] [2022-01-31 02:36:21,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339556533] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:36:21,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100004826] [2022-01-31 02:36:21,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:36:21,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:36:21,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:36:21,158 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) [2022-01-31 02:36:21,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-01-31 02:36:21,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2022-01-31 02:36:21,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:36:21,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 146 conjunts are in the unsatisfiable core [2022-01-31 02:36:21,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:36:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 20235 backedges. 7739 proven. 2556 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-01-31 02:36:22,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:36:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 20235 backedges. 7739 proven. 2556 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-01-31 02:36:23,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100004826] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:36:23,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:36:23,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 147, 147] total 149 [2022-01-31 02:36:23,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840290816] [2022-01-31 02:36:23,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:36:23,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-01-31 02:36:23,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:36:23,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-01-31 02:36:23,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5479, Invalid=16573, Unknown=0, NotChecked=0, Total=22052 [2022-01-31 02:36:23,115 INFO L87 Difference]: Start difference. First operand 584 states and 585 transitions. Second operand has 149 states, 149 states have (on average 1.5302013422818792) internal successors, (228), 148 states have internal predecessors, (228), 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) [2022-01-31 02:36:29,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:36:29,567 INFO L93 Difference]: Finished difference Result 809 states and 882 transitions. [2022-01-31 02:36:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-01-31 02:36:29,567 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 1.5302013422818792) internal successors, (228), 148 states have internal predecessors, (228), 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 581 [2022-01-31 02:36:29,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:36:29,568 INFO L225 Difference]: With dead ends: 809 [2022-01-31 02:36:29,568 INFO L226 Difference]: Without dead ends: 585 [2022-01-31 02:36:29,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1597 GetRequests, 1304 SyntacticMatches, 1 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21159 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=16574, Invalid=69568, Unknown=0, NotChecked=0, Total=86142 [2022-01-31 02:36:29,572 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2628 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 2628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-31 02:36:29,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 124 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 2628 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-31 02:36:29,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-01-31 02:36:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-01-31 02:36:29,667 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) [2022-01-31 02:36:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 586 transitions. [2022-01-31 02:36:29,668 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 586 transitions. Word has length 581 [2022-01-31 02:36:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:36:29,668 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 586 transitions. [2022-01-31 02:36:29,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 1.5302013422818792) internal successors, (228), 148 states have internal predecessors, (228), 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) [2022-01-31 02:36:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 586 transitions. [2022-01-31 02:36:29,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2022-01-31 02:36:29,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:36:29,671 INFO L514 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:36:29,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-01-31 02:36:29,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:36:29,872 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:36:29,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:36:29,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1963027828, now seen corresponding path program 142 times [2022-01-31 02:36:29,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:36:29,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066210278] [2022-01-31 02:36:29,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:36:29,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:36:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:36:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:36:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:36:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:36:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:36:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:36:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:36:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:36:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:36:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:36:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:36:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:36:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:36:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:36:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:36:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:36:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:36:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:36:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:36:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:36:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:36:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:36:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:36:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:36:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:36:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 02:36:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 02:36:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 02:36:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 02:36:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 02:36:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 02:36:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 02:36:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 02:36:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 02:36:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 02:36:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 02:36:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 02:36:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 02:36:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 02:36:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 02:36:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 02:36:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 02:36:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 02:36:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 02:36:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 02:36:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 02:36:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 02:36:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 02:36:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 02:36:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 02:36:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 02:36:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 02:36:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 02:36:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 02:36:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 02:36:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 02:36:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 02:36:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-01-31 02:36:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-01-31 02:36:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 02:36:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 02:36:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 02:36:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-01-31 02:36:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-01-31 02:36:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 02:36:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2022-01-31 02:36:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-01-31 02:36:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-01-31 02:36:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-01-31 02:36:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 02:36:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-01-31 02:36:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2022-01-31 02:36:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 20307 backedges. 2698 proven. 7669 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-01-31 02:36:31,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:36:31,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066210278] [2022-01-31 02:36:31,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066210278] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:36:31,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813929714] [2022-01-31 02:36:31,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 02:36:31,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:36:31,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:36:31,932 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) [2022-01-31 02:36:31,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-01-31 02:36:32,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 02:36:32,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:36:32,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 147 conjunts are in the unsatisfiable core [2022-01-31 02:36:32,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:36:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 20307 backedges. 2770 proven. 7597 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-01-31 02:36:32,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:36:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 20307 backedges. 2770 proven. 7597 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-01-31 02:36:33,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813929714] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:36:33,777 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:36:33,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 81 [2022-01-31 02:36:33,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607962228] [2022-01-31 02:36:33,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:36:33,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-31 02:36:33,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:36:33,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-31 02:36:33,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2790, Invalid=3690, Unknown=0, NotChecked=0, Total=6480 [2022-01-31 02:36:33,779 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) [2022-01-31 02:36:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:36:35,919 INFO L93 Difference]: Finished difference Result 598 states and 600 transitions. [2022-01-31 02:36:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-31 02:36:35,919 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 [2022-01-31 02:36:35,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:36:35,920 INFO L225 Difference]: With dead ends: 598 [2022-01-31 02:36:35,920 INFO L226 Difference]: Without dead ends: 596 [2022-01-31 02:36:35,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1533 GetRequests, 1375 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4076 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=8362, Invalid=16444, Unknown=0, NotChecked=0, Total=24806 [2022-01-31 02:36:35,922 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 177 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 02:36:35,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 60 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 02:36:35,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-01-31 02:36:36,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 592. [2022-01-31 02:36:36,016 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) [2022-01-31 02:36:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 593 transitions. [2022-01-31 02:36:36,017 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 593 transitions. Word has length 582 [2022-01-31 02:36:36,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:36:36,017 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 593 transitions. [2022-01-31 02:36:36,017 INFO L471 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) [2022-01-31 02:36:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 593 transitions. [2022-01-31 02:36:36,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2022-01-31 02:36:36,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:36:36,020 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 73, 72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:36:36,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-01-31 02:36:36,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:36:36,220 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:36:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:36:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash -147914777, now seen corresponding path program 143 times [2022-01-31 02:36:36,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:36:36,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492059622] [2022-01-31 02:36:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:36:36,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:36:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:36:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-31 02:36:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-01-31 02:36:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-31 02:36:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-01-31 02:36:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-31 02:36:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-01-31 02:36:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-01-31 02:36:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-01-31 02:36:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-01-31 02:36:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-01-31 02:36:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-31 02:36:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-01-31 02:36:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-01-31 02:36:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-01-31 02:36:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-01-31 02:36:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-01-31 02:36:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-01-31 02:36:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-01-31 02:36:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-01-31 02:36:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-01-31 02:36:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-01-31 02:36:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-01-31 02:36:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-01-31 02:36:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-01-31 02:36:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-01-31 02:36:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-01-31 02:36:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-01-31 02:36:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-01-31 02:36:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-01-31 02:36:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-01-31 02:36:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-01-31 02:36:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-01-31 02:36:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-01-31 02:36:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-01-31 02:36:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-01-31 02:36:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-01-31 02:36:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-01-31 02:36:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-01-31 02:36:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-01-31 02:36:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-01-31 02:36:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-01-31 02:36:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-01-31 02:36:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-01-31 02:36:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-01-31 02:36:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-01-31 02:36:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-01-31 02:36:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-01-31 02:36:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-01-31 02:36:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-01-31 02:36:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-01-31 02:36:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-01-31 02:36:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-01-31 02:36:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-01-31 02:36:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-01-31 02:36:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-01-31 02:36:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-01-31 02:36:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-01-31 02:36:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-01-31 02:36:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-01-31 02:36:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-01-31 02:36:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-01-31 02:36:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-01-31 02:36:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-01-31 02:36:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-01-31 02:36:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2022-01-31 02:36:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-01-31 02:36:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-01-31 02:36:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-01-31 02:36:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-01-31 02:36:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-01-31 02:36:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2022-01-31 02:36:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-01-31 02:36:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 7956 proven. 2628 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-01-31 02:36:41,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:36:41,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492059622] [2022-01-31 02:36:41,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492059622] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:36:41,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329746700] [2022-01-31 02:36:41,364 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 02:36:41,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:36:41,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:36:41,366 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) [2022-01-31 02:36:41,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-01-31 02:36:41,655 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2022-01-31 02:36:41,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:36:41,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 148 conjunts are in the unsatisfiable core [2022-01-31 02:36:41,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:36:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 7956 proven. 2628 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-01-31 02:36:42,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:36:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 7956 proven. 2628 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-01-31 02:36:43,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329746700] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:36:43,314 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:36:43,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 149, 149] total 151 [2022-01-31 02:36:43,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806395707] [2022-01-31 02:36:43,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:36:43,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2022-01-31 02:36:43,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:36:43,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2022-01-31 02:36:43,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5628, Invalid=17022, Unknown=0, NotChecked=0, Total=22650 [2022-01-31 02:36:43,318 INFO L87 Difference]: Start difference. First operand 592 states and 593 transitions. Second operand has 151 states, 151 states have (on average 1.5298013245033113) internal successors, (231), 150 states have internal predecessors, (231), 74 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-01-31 02:36:50,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:36:50,125 INFO L93 Difference]: Finished difference Result 820 states and 894 transitions. [2022-01-31 02:36:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-01-31 02:36:50,126 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 1.5298013245033113) internal successors, (231), 150 states have internal predecessors, (231), 74 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Word has length 589 [2022-01-31 02:36:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:36:50,127 INFO L225 Difference]: With dead ends: 820 [2022-01-31 02:36:50,127 INFO L226 Difference]: Without dead ends: 593 [2022-01-31 02:36:50,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1619 GetRequests, 1322 SyntacticMatches, 1 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21745 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=17023, Invalid=71483, Unknown=0, NotChecked=0, Total=88506 [2022-01-31 02:36:50,131 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 19 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 3394 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 3394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-31 02:36:50,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 140 Invalid, 3695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 3394 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-31 02:36:50,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-01-31 02:36:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2022-01-31 02:36:50,214 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) [2022-01-31 02:36:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 594 transitions. [2022-01-31 02:36:50,215 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 594 transitions. Word has length 589 [2022-01-31 02:36:50,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:36:50,216 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 594 transitions. [2022-01-31 02:36:50,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 1.5298013245033113) internal successors, (231), 150 states have internal predecessors, (231), 74 states have call successors, (76), 3 states have call predecessors, (76), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-01-31 02:36:50,216 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 594 transitions. [2022-01-31 02:36:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2022-01-31 02:36:50,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:36:50,219 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:36:50,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-01-31 02:36:50,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-01-31 02:36:50,438 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:36:50,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:36:50,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1741137741, now seen corresponding path program 144 times [2022-01-31 02:36:50,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:36:50,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540723858] [2022-01-31 02:36:50,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:36:50,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:36:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:36:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:36:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:36:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:36:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:36:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:36:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:36:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:36:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:36:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:36:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:36:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:36:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:36:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:36:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:36:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:36:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:36:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:36:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:36:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:36:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:36:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:36:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:36:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:36:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:36:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:36:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 02:36:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 02:36:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 02:36:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 02:36:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 02:36:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 02:36:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 02:36:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 02:36:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 02:36:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 02:36:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 02:36:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 02:36:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 02:36:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 02:36:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 02:36:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 02:36:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 02:36:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 02:36:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 02:36:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 02:36:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 02:36:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 02:36:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 02:36:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 02:36:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-01-31 02:36:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 02:36:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 02:36:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 02:36:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 02:36:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-01-31 02:36:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 02:36:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 02:36:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-01-31 02:36:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-01-31 02:36:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 02:36:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 02:36:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 02:36:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-01-31 02:36:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-01-31 02:36:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-01-31 02:36:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2022-01-31 02:36:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-01-31 02:36:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-01-31 02:36:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-01-31 02:36:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 02:36:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-01-31 02:36:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2022-01-31 02:36:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:36:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 20881 backedges. 2772 proven. 7885 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-01-31 02:36:52,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:36:52,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540723858] [2022-01-31 02:36:52,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540723858] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:36:52,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941956579] [2022-01-31 02:36:52,544 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 02:36:52,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:36:52,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:36:52,545 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) [2022-01-31 02:36:52,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-01-31 02:36:52,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2022-01-31 02:36:52,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:36:52,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 1429 conjuncts, 149 conjunts are in the unsatisfiable core [2022-01-31 02:36:52,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:36:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 20881 backedges. 2845 proven. 7812 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-01-31 02:36:53,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:36:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 20881 backedges. 2845 proven. 7812 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-01-31 02:36:54,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941956579] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:36:54,557 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:36:54,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78, 78] total 82 [2022-01-31 02:36:54,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943421955] [2022-01-31 02:36:54,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:36:54,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-31 02:36:54,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:36:54,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-31 02:36:54,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2865, Invalid=3777, Unknown=0, NotChecked=0, Total=6642 [2022-01-31 02:36:54,559 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) [2022-01-31 02:36:56,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:36:56,768 INFO L93 Difference]: Finished difference Result 606 states and 608 transitions. [2022-01-31 02:36:56,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-31 02:36:56,769 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 [2022-01-31 02:36:56,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:36:56,772 INFO L225 Difference]: With dead ends: 606 [2022-01-31 02:36:56,772 INFO L226 Difference]: Without dead ends: 604 [2022-01-31 02:36:56,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1554 GetRequests, 1394 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=8587, Invalid=16853, Unknown=0, NotChecked=0, Total=25440 [2022-01-31 02:36:56,774 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 177 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 02:36:56,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 75 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 02:36:56,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-01-31 02:36:56,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 600. [2022-01-31 02:36:56,906 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) [2022-01-31 02:36:56,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 601 transitions. [2022-01-31 02:36:56,907 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 601 transitions. Word has length 590 [2022-01-31 02:36:56,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:36:56,907 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 601 transitions. [2022-01-31 02:36:56,908 INFO L471 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) [2022-01-31 02:36:56,908 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 601 transitions. [2022-01-31 02:36:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2022-01-31 02:36:56,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:36:56,911 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 74, 73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:36:56,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-01-31 02:36:57,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:36:57,123 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:36:57,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:36:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1098235898, now seen corresponding path program 145 times [2022-01-31 02:36:57,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:36:57,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868187916] [2022-01-31 02:36:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:36:57,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:36:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:37:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-01-31 02:37:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-01-31 02:37:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-31 02:37:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-31 02:37:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-01-31 02:37:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-01-31 02:37:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-31 02:37:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-31 02:37:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-01-31 02:37:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-31 02:37:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-01-31 02:37:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-01-31 02:37:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-01-31 02:37:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-01-31 02:37:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-01-31 02:37:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-01-31 02:37:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-01-31 02:37:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-01-31 02:37:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-01-31 02:37:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-01-31 02:37:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-01-31 02:37:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-01-31 02:37:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-01-31 02:37:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-01-31 02:37:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-01-31 02:37:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-01-31 02:37:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-01-31 02:37:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-01-31 02:37:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-01-31 02:37:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-01-31 02:37:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-01-31 02:37:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-01-31 02:37:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-01-31 02:37:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-01-31 02:37:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-01-31 02:37:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-01-31 02:37:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-01-31 02:37:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-01-31 02:37:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-01-31 02:37:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-01-31 02:37:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-01-31 02:37:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-01-31 02:37:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-01-31 02:37:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-01-31 02:37:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-01-31 02:37:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-01-31 02:37:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-01-31 02:37:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-01-31 02:37:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-01-31 02:37:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-01-31 02:37:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-01-31 02:37:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-01-31 02:37:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-01-31 02:37:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-01-31 02:37:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-01-31 02:37:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-01-31 02:37:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-01-31 02:37:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-01-31 02:37:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-01-31 02:37:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-01-31 02:37:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-01-31 02:37:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-01-31 02:37:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-01-31 02:37:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-01-31 02:37:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-01-31 02:37:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2022-01-31 02:37:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-01-31 02:37:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-01-31 02:37:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-01-31 02:37:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-01-31 02:37:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-01-31 02:37:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2022-01-31 02:37:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-01-31 02:37:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 21389 backedges. 8176 proven. 2701 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-01-31 02:37:02,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:37:02,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868187916] [2022-01-31 02:37:02,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868187916] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:37:02,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111875455] [2022-01-31 02:37:02,430 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 02:37:02,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:37:02,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:37:02,431 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) [2022-01-31 02:37:02,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-01-31 02:37:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:02,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 150 conjunts are in the unsatisfiable core [2022-01-31 02:37:02,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:37:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 21389 backedges. 8176 proven. 2701 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-01-31 02:37:03,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:37:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 21389 backedges. 8176 proven. 2701 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-01-31 02:37:04,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111875455] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:37:04,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:37:04,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 151, 151] total 153 [2022-01-31 02:37:04,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456765168] [2022-01-31 02:37:04,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:37:04,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2022-01-31 02:37:04,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:37:04,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2022-01-31 02:37:04,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5779, Invalid=17477, Unknown=0, NotChecked=0, Total=23256 [2022-01-31 02:37:04,289 INFO L87 Difference]: Start difference. First operand 600 states and 601 transitions. Second operand has 153 states, 153 states have (on average 1.5294117647058822) internal successors, (234), 152 states have internal predecessors, (234), 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) [2022-01-31 02:37:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:37:11,240 INFO L93 Difference]: Finished difference Result 831 states and 906 transitions. [2022-01-31 02:37:11,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-01-31 02:37:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 153 states have (on average 1.5294117647058822) internal successors, (234), 152 states have internal predecessors, (234), 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 597 [2022-01-31 02:37:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:37:11,242 INFO L225 Difference]: With dead ends: 831 [2022-01-31 02:37:11,242 INFO L226 Difference]: Without dead ends: 601 [2022-01-31 02:37:11,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1641 GetRequests, 1340 SyntacticMatches, 1 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22339 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=17478, Invalid=73424, Unknown=0, NotChecked=0, Total=90902 [2022-01-31 02:37:11,246 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3259 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 3259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 02:37:11,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 136 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 3259 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-31 02:37:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-01-31 02:37:11,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2022-01-31 02:37:11,331 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) [2022-01-31 02:37:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 602 transitions. [2022-01-31 02:37:11,332 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 602 transitions. Word has length 597 [2022-01-31 02:37:11,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:37:11,332 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 602 transitions. [2022-01-31 02:37:11,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 153 states have (on average 1.5294117647058822) internal successors, (234), 152 states have internal predecessors, (234), 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) [2022-01-31 02:37:11,332 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 602 transitions. [2022-01-31 02:37:11,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-01-31 02:37:11,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:37:11,334 INFO L514 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:37:11,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2022-01-31 02:37:11,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-01-31 02:37:11,535 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:37:11,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:37:11,535 INFO L85 PathProgramCache]: Analyzing trace with hash -825220756, now seen corresponding path program 146 times [2022-01-31 02:37:11,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:37:11,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486692428] [2022-01-31 02:37:11,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:37:11,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:37:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:37:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:37:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:37:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:37:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:37:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:37:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:37:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:37:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:37:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:37:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:37:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:37:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:37:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:37:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:37:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:37:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:37:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:37:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:37:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:37:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:37:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:37:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:37:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:37:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:37:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:37:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:37:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 02:37:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 02:37:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 02:37:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 02:37:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 02:37:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 02:37:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 02:37:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 02:37:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 02:37:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 02:37:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 02:37:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 02:37:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 02:37:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 02:37:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 02:37:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 02:37:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 02:37:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 02:37:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 02:37:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 02:37:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 02:37:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 02:37:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 02:37:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 02:37:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-01-31 02:37:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 02:37:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 02:37:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 02:37:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 02:37:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-01-31 02:37:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-01-31 02:37:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 02:37:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-01-31 02:37:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-01-31 02:37:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 02:37:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 02:37:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 02:37:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-01-31 02:37:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-01-31 02:37:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-01-31 02:37:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2022-01-31 02:37:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-01-31 02:37:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-01-31 02:37:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-01-31 02:37:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 02:37:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-01-31 02:37:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2022-01-31 02:37:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 21463 backedges. 2847 proven. 8104 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-01-31 02:37:13,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:37:13,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486692428] [2022-01-31 02:37:13,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486692428] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:37:13,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304029939] [2022-01-31 02:37:13,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 02:37:13,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:37:13,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:37:13,720 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) [2022-01-31 02:37:13,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-01-31 02:37:13,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 02:37:13,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:37:13,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 151 conjunts are in the unsatisfiable core [2022-01-31 02:37:13,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:37:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 21463 backedges. 2921 proven. 8030 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-01-31 02:37:14,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:37:15,580 INFO L134 CoverageAnalysis]: Checked inductivity of 21463 backedges. 2921 proven. 8030 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-01-31 02:37:15,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304029939] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:37:15,580 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:37:15,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79, 79] total 83 [2022-01-31 02:37:15,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149260299] [2022-01-31 02:37:15,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:37:15,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-31 02:37:15,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:37:15,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-31 02:37:15,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2941, Invalid=3865, Unknown=0, NotChecked=0, Total=6806 [2022-01-31 02:37:15,582 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) [2022-01-31 02:37:17,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 02:37:17,779 INFO L93 Difference]: Finished difference Result 614 states and 616 transitions. [2022-01-31 02:37:17,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-31 02:37:17,780 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 [2022-01-31 02:37:17,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 02:37:17,782 INFO L225 Difference]: With dead ends: 614 [2022-01-31 02:37:17,782 INFO L226 Difference]: Without dead ends: 612 [2022-01-31 02:37:17,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1413 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4263 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=8815, Invalid=17267, Unknown=0, NotChecked=0, Total=26082 [2022-01-31 02:37:17,783 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 179 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-31 02:37:17,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 60 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-31 02:37:17,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-01-31 02:37:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 608. [2022-01-31 02:37:17,952 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) [2022-01-31 02:37:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 609 transitions. [2022-01-31 02:37:17,953 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 609 transitions. Word has length 598 [2022-01-31 02:37:17,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 02:37:17,954 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 609 transitions. [2022-01-31 02:37:17,954 INFO L471 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) [2022-01-31 02:37:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 609 transitions. [2022-01-31 02:37:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-01-31 02:37:17,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 02:37:17,957 INFO L514 BasicCegarLoop]: trace histogram [75, 75, 75, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 02:37:17,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-01-31 02:37:18,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-01-31 02:37:18,179 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 02:37:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 02:37:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1037503225, now seen corresponding path program 147 times [2022-01-31 02:37:18,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 02:37:18,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763851977] [2022-01-31 02:37:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 02:37:18,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 02:37:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 02:37:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-31 02:37:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-01-31 02:37:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-31 02:37:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-01-31 02:37:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-31 02:37:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-31 02:37:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-31 02:37:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-01-31 02:37:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-31 02:37:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-01-31 02:37:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-01-31 02:37:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-01-31 02:37:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-01-31 02:37:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-01-31 02:37:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-01-31 02:37:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-01-31 02:37:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-01-31 02:37:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-01-31 02:37:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-01-31 02:37:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-01-31 02:37:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-01-31 02:37:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-01-31 02:37:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-01-31 02:37:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-01-31 02:37:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-01-31 02:37:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-01-31 02:37:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-01-31 02:37:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-01-31 02:37:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-01-31 02:37:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-01-31 02:37:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-01-31 02:37:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-01-31 02:37:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-01-31 02:37:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-01-31 02:37:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-01-31 02:37:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-01-31 02:37:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-01-31 02:37:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-01-31 02:37:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-01-31 02:37:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-01-31 02:37:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-01-31 02:37:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-01-31 02:37:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-01-31 02:37:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-01-31 02:37:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-01-31 02:37:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-01-31 02:37:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-01-31 02:37:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-01-31 02:37:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-01-31 02:37:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-01-31 02:37:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-01-31 02:37:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-01-31 02:37:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-01-31 02:37:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-01-31 02:37:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-01-31 02:37:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-01-31 02:37:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-01-31 02:37:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-01-31 02:37:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-01-31 02:37:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-01-31 02:37:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-01-31 02:37:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-01-31 02:37:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-01-31 02:37:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-01-31 02:37:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-01-31 02:37:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-01-31 02:37:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2022-01-31 02:37:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-01-31 02:37:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-01-31 02:37:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-01-31 02:37:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-01-31 02:37:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-01-31 02:37:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2022-01-31 02:37:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-01-31 02:37:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 02:37:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 21978 backedges. 8399 proven. 2775 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2022-01-31 02:37:23,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 02:37:23,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763851977] [2022-01-31 02:37:23,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763851977] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 02:37:23,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183141704] [2022-01-31 02:37:23,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 02:37:23,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 02:37:23,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 02:37:23,627 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) [2022-01-31 02:37:23,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-01-31 02:37:23,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 75 check-sat command(s) [2022-01-31 02:37:23,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 02:37:23,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 152 conjunts are in the unsatisfiable core [2022-01-31 02:37:23,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 02:37:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21978 backedges. 8399 proven. 2775 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2022-01-31 02:37:24,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 02:37:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 21978 backedges. 8399 proven. 2775 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2022-01-31 02:37:25,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183141704] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 02:37:25,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 02:37:25,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 153, 153] total 155 [2022-01-31 02:37:25,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382306465] [2022-01-31 02:37:25,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 02:37:25,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-01-31 02:37:25,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 02:37:25,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-01-31 02:37:25,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5932, Invalid=17938, Unknown=0, NotChecked=0, Total=23870 [2022-01-31 02:37:25,672 INFO L87 Difference]: Start difference. First operand 608 states and 609 transitions. Second operand has 155 states, 155 states have (on average 1.5290322580645161) internal successors, (237), 154 states have internal predecessors, (237), 76 states have call successors, (78), 3 states have call predecessors, (78), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75)