/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-34549b5 [2022-04-05 23:42:00,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 23:42:00,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 23:42:00,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 23:42:00,801 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 [2022-04-05 23:42:00,825 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 23:42:00,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 23:42:00,826 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-05 23:42:00,826 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-05 23:42:00,827 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-05 23:42:00,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-05 23:42:00,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-05 23:42:00,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-05 23:42:00,828 INFO L138 SettingsManager]: * Use SBE=true [2022-04-05 23:42:00,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 23:42:00,829 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 23:42:00,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 23:42:00,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 23:42:00,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 23:42:00,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 23:42:00,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 23:42:00,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 23:42:00,830 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 23:42:00,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 23:42:00,830 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 23:42:00,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 23:42:00,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 23:42:00,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 23:42:00,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 23:42:00,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 23:42:00,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 23:42:00,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-05 23:42:00,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-05 23:42:00,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 23:42:00,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-05 23:42:00,832 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-05 23:42:00,832 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-05 23:42:00,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-05 23:42:00,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 23:42:01,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 23:42:01,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 23:42:01,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 23:42:01,098 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 23:42:01,100 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 23:42:01,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/down.i [2022-04-05 23:42:01,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1822deda/98b45c731b864f74b4feeb56495393bb/FLAGd0bf64239 [2022-04-05 23:42:01,565 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 23:42:01,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i [2022-04-05 23:42:01,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1822deda/98b45c731b864f74b4feeb56495393bb/FLAGd0bf64239 [2022-04-05 23:42:01,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1822deda/98b45c731b864f74b4feeb56495393bb [2022-04-05 23:42:01,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 23:42:01,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-05 23:42:01,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 23:42:01,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 23:42:01,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 23:42:01,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 11:42:01" (1/1) ... [2022-04-05 23:42:01,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa4d3d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 11:42:01, skipping insertion in model container [2022-04-05 23:42:01,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 11:42:01" (1/1) ... [2022-04-05 23:42:01,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 23:42:01,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 23:42:01,813 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] [2022-04-05 23:42:01,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 23:42:01,837 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 23:42:01,857 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] [2022-04-05 23:42:01,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 23:42:01,874 INFO L208 MainTranslator]: Completed translation [2022-04-05 23:42:01,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 11:42:01 WrapperNode [2022-04-05 23:42:01,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 23:42:01,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 23:42:01,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 23:42:01,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 23:42:01,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 11:42:01" (1/1) ... [2022-04-05 23:42:01,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 11:42:01" (1/1) ... [2022-04-05 23:42:01,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 11:42:01" (1/1) ... [2022-04-05 23:42:01,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 11:42:01" (1/1) ... [2022-04-05 23:42:01,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 11:42:01" (1/1) ... [2022-04-05 23:42:01,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 11:42:01" (1/1) ... [2022-04-05 23:42:01,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 11:42:01" (1/1) ... [2022-04-05 23:42:01,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 23:42:01,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 23:42:01,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 23:42:01,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 23:42:01,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 11:42:01" (1/1) ... [2022-04-05 23:42:01,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 23:42:01,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:01,945 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) [2022-04-05 23:42:01,972 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 [2022-04-05 23:42:01,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 23:42:01,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 23:42:01,993 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 23:42:01,993 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 23:42:01,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 23:42:01,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 23:42:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 23:42:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 23:42:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-05 23:42:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-05 23:42:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 23:42:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 23:42:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 23:42:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 23:42:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 23:42:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 23:42:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 23:42:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 23:42:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 23:42:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 23:42:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 23:42:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 23:42:02,064 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 23:42:02,065 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 23:42:02,154 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 23:42:02,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 23:42:02,160 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-05 23:42:02,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 11:42:02 BoogieIcfgContainer [2022-04-05 23:42:02,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 23:42:02,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 23:42:02,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 23:42:02,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 23:42:02,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 11:42:01" (1/3) ... [2022-04-05 23:42:02,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b226ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 11:42:02, skipping insertion in model container [2022-04-05 23:42:02,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 11:42:01" (2/3) ... [2022-04-05 23:42:02,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b226ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 11:42:02, skipping insertion in model container [2022-04-05 23:42:02,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 11:42:02" (3/3) ... [2022-04-05 23:42:02,188 INFO L111 eAbstractionObserver]: Analyzing ICFG down.i [2022-04-05 23:42:02,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-05 23:42:02,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 23:42:02,249 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 23:42:02,268 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-05 23:42:02,268 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 23:42:02,288 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) [2022-04-05 23:42:02,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-05 23:42:02,299 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:02,299 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:02,300 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:02,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:02,309 INFO L85 PathProgramCache]: Analyzing trace with hash 991123303, now seen corresponding path program 1 times [2022-04-05 23:42:02,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:02,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956810010] [2022-04-05 23:42:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:02,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:02,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 23:42:02,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:02,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956810010] [2022-04-05 23:42:02,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956810010] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 23:42:02,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 23:42:02,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 23:42:02,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719691465] [2022-04-05 23:42:02,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 23:42:02,535 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 23:42:02,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:02,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 23:42:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 23:42:02,562 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) [2022-04-05 23:42:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:02,685 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-04-05 23:42:02,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 23:42:02,688 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 [2022-04-05 23:42:02,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:02,697 INFO L225 Difference]: With dead ends: 43 [2022-04-05 23:42:02,697 INFO L226 Difference]: Without dead ends: 18 [2022-04-05 23:42:02,702 INFO L912 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 [2022-04-05 23:42:02,706 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-04-05 23:42:02,707 INFO L914 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] [2022-04-05 23:42:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-05 23:42:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-04-05 23:42:02,734 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) [2022-04-05 23:42:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-04-05 23:42:02,736 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2022-04-05 23:42:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:02,737 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-04-05 23:42:02,737 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 23:42:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-04-05 23:42:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-05 23:42:02,738 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:02,738 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:02,738 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 23:42:02,739 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:02,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1458852147, now seen corresponding path program 1 times [2022-04-05 23:42:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:02,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288746602] [2022-04-05 23:42:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 23:42:02,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:02,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288746602] [2022-04-05 23:42:02,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288746602] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:02,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529333774] [2022-04-05 23:42:02,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:02,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:02,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:02,819 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) [2022-04-05 23:42:02,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 23:42:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:02,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 23:42:02,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 23:42:02,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 23:42:02,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529333774] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 23:42:02,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 23:42:02,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2022-04-05 23:42:02,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438459096] [2022-04-05 23:42:02,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 23:42:02,966 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 23:42:02,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:02,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 23:42:02,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-05 23:42:02,967 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) [2022-04-05 23:42:03,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:03,005 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-05 23:42:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 23:42:03,006 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 [2022-04-05 23:42:03,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:03,008 INFO L225 Difference]: With dead ends: 30 [2022-04-05 23:42:03,008 INFO L226 Difference]: Without dead ends: 28 [2022-04-05 23:42:03,009 INFO L912 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 [2022-04-05 23:42:03,010 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 23:42:03,011 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 63 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 23:42:03,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-04-05 23:42:03,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-04-05 23:42:03,019 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) [2022-04-05 23:42:03,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-04-05 23:42:03,020 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2022-04-05 23:42:03,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:03,020 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-04-05 23:42:03,020 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 23:42:03,021 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-04-05 23:42:03,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-05 23:42:03,021 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:03,021 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:03,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:03,247 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:03,248 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:03,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1637271686, now seen corresponding path program 1 times [2022-04-05 23:42:03,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:03,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420097596] [2022-04-05 23:42:03,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:03,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:03,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:03,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-05 23:42:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 23:42:03,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:03,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420097596] [2022-04-05 23:42:03,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420097596] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:03,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747546900] [2022-04-05 23:42:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:03,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:03,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:03,372 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) [2022-04-05 23:42:03,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-05 23:42:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:03,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-05 23:42:03,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 23:42:03,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 23:42:03,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747546900] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:03,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:03,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 9 [2022-04-05 23:42:03,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205069548] [2022-04-05 23:42:03,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:03,574 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 23:42:03,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:03,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 23:42:03,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-05 23:42:03,576 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) [2022-04-05 23:42:03,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:03,691 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-04-05 23:42:03,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 23:42:03,692 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 [2022-04-05 23:42:03,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:03,696 INFO L225 Difference]: With dead ends: 39 [2022-04-05 23:42:03,696 INFO L226 Difference]: Without dead ends: 25 [2022-04-05 23:42:03,698 INFO L912 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 [2022-04-05 23:42:03,702 INFO L913 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 [2022-04-05 23:42:03,703 INFO L914 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] [2022-04-05 23:42:03,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-05 23:42:03,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-05 23:42:03,713 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) [2022-04-05 23:42:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-04-05 23:42:03,715 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2022-04-05 23:42:03,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:03,716 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-04-05 23:42:03,716 INFO L479 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) [2022-04-05 23:42:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-04-05 23:42:03,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-05 23:42:03,717 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:03,718 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:03,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:03,931 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-05 23:42:03,932 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:03,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:03,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1400088084, now seen corresponding path program 2 times [2022-04-05 23:42:03,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:03,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214702407] [2022-04-05 23:42:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:03,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:04,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:04,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 23:42:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 23:42:04,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:04,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214702407] [2022-04-05 23:42:04,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214702407] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:04,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521674645] [2022-04-05 23:42:04,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:42:04,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:04,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:04,058 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) [2022-04-05 23:42:04,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-05 23:42:04,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:42:04,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:04,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 23:42:04,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 23:42:04,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 23:42:04,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521674645] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:04,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:04,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-04-05 23:42:04,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957260988] [2022-04-05 23:42:04,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:04,264 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 23:42:04,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:04,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 23:42:04,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-05 23:42:04,265 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) [2022-04-05 23:42:04,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:04,416 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2022-04-05 23:42:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 23:42:04,417 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 [2022-04-05 23:42:04,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:04,422 INFO L225 Difference]: With dead ends: 38 [2022-04-05 23:42:04,422 INFO L226 Difference]: Without dead ends: 36 [2022-04-05 23:42:04,426 INFO L912 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 [2022-04-05 23:42:04,426 INFO L913 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 [2022-04-05 23:42:04,427 INFO L914 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] [2022-04-05 23:42:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-05 23:42:04,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-04-05 23:42:04,433 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) [2022-04-05 23:42:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-04-05 23:42:04,433 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 22 [2022-04-05 23:42:04,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:04,434 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-04-05 23:42:04,434 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 23:42:04,434 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-04-05 23:42:04,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-05 23:42:04,435 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:04,435 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:04,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:04,658 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:04,658 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:04,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:04,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1800678535, now seen corresponding path program 3 times [2022-04-05 23:42:04,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:04,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824221082] [2022-04-05 23:42:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:04,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:04,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:04,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-05 23:42:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 23:42:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 23:42:04,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:04,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824221082] [2022-04-05 23:42:04,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824221082] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:04,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314454850] [2022-04-05 23:42:04,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:42:04,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:04,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:04,800 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) [2022-04-05 23:42:04,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-05 23:42:04,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-04-05 23:42:04,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:04,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-05 23:42:04,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 23:42:04,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 23:42:04,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314454850] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:04,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:04,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 11 [2022-04-05 23:42:04,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879399990] [2022-04-05 23:42:04,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:04,969 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 23:42:04,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:04,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 23:42:04,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-04-05 23:42:04,970 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) [2022-04-05 23:42:05,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:05,103 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-04-05 23:42:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 23:42:05,103 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 [2022-04-05 23:42:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:05,104 INFO L225 Difference]: With dead ends: 50 [2022-04-05 23:42:05,104 INFO L226 Difference]: Without dead ends: 33 [2022-04-05 23:42:05,105 INFO L912 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 [2022-04-05 23:42:05,105 INFO L913 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 [2022-04-05 23:42:05,106 INFO L914 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] [2022-04-05 23:42:05,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-05 23:42:05,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-05 23:42:05,111 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) [2022-04-05 23:42:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-04-05 23:42:05,111 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2022-04-05 23:42:05,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:05,112 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-04-05 23:42:05,112 INFO L479 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) [2022-04-05 23:42:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-04-05 23:42:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-05 23:42:05,113 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:05,113 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:05,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:05,329 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:05,330 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:05,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:05,330 INFO L85 PathProgramCache]: Analyzing trace with hash -949159955, now seen corresponding path program 4 times [2022-04-05 23:42:05,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:05,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885709594] [2022-04-05 23:42:05,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:05,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:05,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 23:42:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:05,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 23:42:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 23:42:05,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:05,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885709594] [2022-04-05 23:42:05,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885709594] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:05,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026671505] [2022-04-05 23:42:05,424 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:42:05,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:05,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:05,425 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) [2022-04-05 23:42:05,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-05 23:42:05,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:42:05,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:05,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 23:42:05,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 23:42:05,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-05 23:42:05,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026671505] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:05,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:05,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-04-05 23:42:05,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857110018] [2022-04-05 23:42:05,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:05,615 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 23:42:05,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:05,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 23:42:05,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-04-05 23:42:05,616 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) [2022-04-05 23:42:05,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:05,758 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2022-04-05 23:42:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 23:42:05,760 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 [2022-04-05 23:42:05,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:05,761 INFO L225 Difference]: With dead ends: 46 [2022-04-05 23:42:05,761 INFO L226 Difference]: Without dead ends: 44 [2022-04-05 23:42:05,762 INFO L912 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 [2022-04-05 23:42:05,763 INFO L913 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 [2022-04-05 23:42:05,763 INFO L914 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] [2022-04-05 23:42:05,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-04-05 23:42:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-04-05 23:42:05,768 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) [2022-04-05 23:42:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-04-05 23:42:05,769 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 30 [2022-04-05 23:42:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:05,770 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-04-05 23:42:05,770 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 9 states have internal predecessors, (24), 4 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-05 23:42:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-04-05 23:42:05,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-05 23:42:05,771 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:05,771 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:05,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:05,994 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:05,995 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:05,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:05,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1241056410, now seen corresponding path program 5 times [2022-04-05 23:42:05,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:05,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947071165] [2022-04-05 23:42:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:05,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 23:42:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:06,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 23:42:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:06,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 23:42:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 23:42:06,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:06,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947071165] [2022-04-05 23:42:06,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947071165] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:06,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374662969] [2022-04-05 23:42:06,096 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:42:06,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:06,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:06,097 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) [2022-04-05 23:42:06,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-05 23:42:06,141 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-04-05 23:42:06,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:06,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-05 23:42:06,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 23:42:06,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 23:42:06,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374662969] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:06,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:06,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 13 [2022-04-05 23:42:06,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475347883] [2022-04-05 23:42:06,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:06,312 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 23:42:06,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:06,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 23:42:06,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-04-05 23:42:06,312 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) [2022-04-05 23:42:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:06,477 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-04-05 23:42:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 23:42:06,477 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 [2022-04-05 23:42:06,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:06,478 INFO L225 Difference]: With dead ends: 61 [2022-04-05 23:42:06,478 INFO L226 Difference]: Without dead ends: 41 [2022-04-05 23:42:06,479 INFO L912 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 [2022-04-05 23:42:06,479 INFO L913 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 [2022-04-05 23:42:06,480 INFO L914 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] [2022-04-05 23:42:06,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-05 23:42:06,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-04-05 23:42:06,486 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) [2022-04-05 23:42:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-04-05 23:42:06,486 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 37 [2022-04-05 23:42:06,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:06,487 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-04-05 23:42:06,487 INFO L479 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) [2022-04-05 23:42:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-04-05 23:42:06,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-05 23:42:06,488 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:06,488 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:06,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:06,707 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:06,708 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:06,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:06,708 INFO L85 PathProgramCache]: Analyzing trace with hash -781647668, now seen corresponding path program 6 times [2022-04-05 23:42:06,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:06,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257275519] [2022-04-05 23:42:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:06,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:06,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:06,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 23:42:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 23:42:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:06,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 23:42:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 23:42:06,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:06,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257275519] [2022-04-05 23:42:06,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257275519] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:06,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125929718] [2022-04-05 23:42:06,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:42:06,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:06,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:06,804 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) [2022-04-05 23:42:06,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-05 23:42:06,849 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-04-05 23:42:06,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:06,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-05 23:42:06,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 23:42:06,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 23:42:07,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125929718] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:07,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:07,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2022-04-05 23:42:07,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760538177] [2022-04-05 23:42:07,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:07,026 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 23:42:07,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:07,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 23:42:07,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-04-05 23:42:07,027 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) [2022-04-05 23:42:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:07,191 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2022-04-05 23:42:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 23:42:07,192 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 [2022-04-05 23:42:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:07,193 INFO L225 Difference]: With dead ends: 54 [2022-04-05 23:42:07,193 INFO L226 Difference]: Without dead ends: 52 [2022-04-05 23:42:07,193 INFO L912 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 [2022-04-05 23:42:07,194 INFO L913 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 [2022-04-05 23:42:07,194 INFO L914 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] [2022-04-05 23:42:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-05 23:42:07,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2022-04-05 23:42:07,202 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) [2022-04-05 23:42:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2022-04-05 23:42:07,203 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 38 [2022-04-05 23:42:07,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:07,203 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2022-04-05 23:42:07,203 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 23:42:07,203 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2022-04-05 23:42:07,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-05 23:42:07,204 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:07,204 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:07,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:07,405 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:07,405 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:07,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1058539943, now seen corresponding path program 7 times [2022-04-05 23:42:07,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:07,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523498272] [2022-04-05 23:42:07,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:07,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:07,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:07,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 23:42:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 23:42:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 23:42:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:07,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 23:42:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 23:42:07,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:07,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523498272] [2022-04-05 23:42:07,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523498272] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:07,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691964891] [2022-04-05 23:42:07,524 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:42:07,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:07,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:07,525 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) [2022-04-05 23:42:07,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-05 23:42:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:07,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-05 23:42:07,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 23:42:07,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 23:42:07,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691964891] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:07,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:07,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 15 [2022-04-05 23:42:07,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4010336] [2022-04-05 23:42:07,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:07,722 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 23:42:07,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:07,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 23:42:07,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-04-05 23:42:07,723 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) [2022-04-05 23:42:07,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:07,917 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2022-04-05 23:42:07,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 23:42:07,917 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 [2022-04-05 23:42:07,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:07,920 INFO L225 Difference]: With dead ends: 72 [2022-04-05 23:42:07,920 INFO L226 Difference]: Without dead ends: 49 [2022-04-05 23:42:07,921 INFO L912 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 [2022-04-05 23:42:07,923 INFO L913 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 [2022-04-05 23:42:07,923 INFO L914 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] [2022-04-05 23:42:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-05 23:42:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-04-05 23:42:07,935 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) [2022-04-05 23:42:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-04-05 23:42:07,937 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 45 [2022-04-05 23:42:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:07,937 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-04-05 23:42:07,937 INFO L479 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) [2022-04-05 23:42:07,937 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-04-05 23:42:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-05 23:42:07,940 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:07,940 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:07,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:08,166 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-05 23:42:08,167 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:08,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:08,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1105807629, now seen corresponding path program 8 times [2022-04-05 23:42:08,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:08,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026385984] [2022-04-05 23:42:08,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:08,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:08,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:08,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-05 23:42:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:08,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 23:42:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:08,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 23:42:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 23:42:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 23:42:08,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:08,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026385984] [2022-04-05 23:42:08,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026385984] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:08,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212340462] [2022-04-05 23:42:08,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:42:08,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:08,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:08,262 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) [2022-04-05 23:42:08,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-05 23:42:08,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:42:08,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:08,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-05 23:42:08,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 23:42:08,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-05 23:42:08,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212340462] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:08,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:08,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 14 [2022-04-05 23:42:08,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520972490] [2022-04-05 23:42:08,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:08,506 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 23:42:08,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:08,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 23:42:08,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-04-05 23:42:08,507 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) [2022-04-05 23:42:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:08,684 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2022-04-05 23:42:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 23:42:08,684 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 [2022-04-05 23:42:08,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:08,688 INFO L225 Difference]: With dead ends: 62 [2022-04-05 23:42:08,688 INFO L226 Difference]: Without dead ends: 60 [2022-04-05 23:42:08,689 INFO L912 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 [2022-04-05 23:42:08,689 INFO L913 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 [2022-04-05 23:42:08,690 INFO L914 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] [2022-04-05 23:42:08,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-05 23:42:08,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2022-04-05 23:42:08,701 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) [2022-04-05 23:42:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2022-04-05 23:42:08,702 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 46 [2022-04-05 23:42:08,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:08,702 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2022-04-05 23:42:08,702 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 11 states have internal predecessors, (30), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-05 23:42:08,702 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2022-04-05 23:42:08,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-05 23:42:08,706 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:08,706 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:08,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:08,929 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-05 23:42:08,929 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:08,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:08,929 INFO L85 PathProgramCache]: Analyzing trace with hash -211605946, now seen corresponding path program 9 times [2022-04-05 23:42:08,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:08,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943843364] [2022-04-05 23:42:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-05 23:42:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 23:42:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 23:42:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 23:42:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 23:42:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 23:42:09,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:09,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943843364] [2022-04-05 23:42:09,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943843364] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:09,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127534718] [2022-04-05 23:42:09,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:42:09,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:09,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:09,056 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) [2022-04-05 23:42:09,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-05 23:42:09,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-04-05 23:42:09,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:09,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 23:42:09,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 23:42:09,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 23:42:09,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127534718] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:09,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:09,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 17 [2022-04-05 23:42:09,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460533189] [2022-04-05 23:42:09,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:09,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-05 23:42:09,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-05 23:42:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-04-05 23:42:09,297 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) [2022-04-05 23:42:09,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:09,522 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2022-04-05 23:42:09,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 23:42:09,522 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 [2022-04-05 23:42:09,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:09,523 INFO L225 Difference]: With dead ends: 83 [2022-04-05 23:42:09,523 INFO L226 Difference]: Without dead ends: 57 [2022-04-05 23:42:09,524 INFO L912 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 [2022-04-05 23:42:09,524 INFO L913 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 [2022-04-05 23:42:09,524 INFO L914 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] [2022-04-05 23:42:09,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-04-05 23:42:09,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-04-05 23:42:09,530 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) [2022-04-05 23:42:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-04-05 23:42:09,531 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 53 [2022-04-05 23:42:09,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:09,531 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-04-05 23:42:09,531 INFO L479 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) [2022-04-05 23:42:09,531 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-04-05 23:42:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-05 23:42:09,532 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:09,532 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:09,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:09,747 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-05 23:42:09,747 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2143920044, now seen corresponding path program 10 times [2022-04-05 23:42:09,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:09,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483775445] [2022-04-05 23:42:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:09,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 23:42:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 23:42:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 23:42:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 23:42:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 23:42:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 23:42:09,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:09,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483775445] [2022-04-05 23:42:09,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483775445] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:09,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833104489] [2022-04-05 23:42:09,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:42:09,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:09,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:09,850 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) [2022-04-05 23:42:09,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-05 23:42:09,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:42:09,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:09,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-05 23:42:09,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:10,008 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 23:42:10,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 23:42:10,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833104489] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:10,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:10,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 15 [2022-04-05 23:42:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025665381] [2022-04-05 23:42:10,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:10,122 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 23:42:10,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:10,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 23:42:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-04-05 23:42:10,123 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) [2022-04-05 23:42:10,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:10,308 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2022-04-05 23:42:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-05 23:42:10,308 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 [2022-04-05 23:42:10,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:10,309 INFO L225 Difference]: With dead ends: 70 [2022-04-05 23:42:10,309 INFO L226 Difference]: Without dead ends: 68 [2022-04-05 23:42:10,311 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2022-04-05 23:42:10,311 INFO L913 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 [2022-04-05 23:42:10,312 INFO L914 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] [2022-04-05 23:42:10,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-04-05 23:42:10,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2022-04-05 23:42:10,324 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) [2022-04-05 23:42:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2022-04-05 23:42:10,327 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 54 [2022-04-05 23:42:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:10,328 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2022-04-05 23:42:10,328 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 7 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-05 23:42:10,328 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2022-04-05 23:42:10,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-05 23:42:10,330 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:10,330 INFO L499 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:10,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-04-05 23:42:10,543 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-04-05 23:42:10,543 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:10,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:10,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2089750841, now seen corresponding path program 11 times [2022-04-05 23:42:10,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:10,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085514100] [2022-04-05 23:42:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:10,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:10,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-05 23:42:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:10,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 23:42:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:10,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 23:42:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:10,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 23:42:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:10,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 23:42:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:10,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 23:42:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 23:42:10,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:10,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085514100] [2022-04-05 23:42:10,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085514100] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:10,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271465076] [2022-04-05 23:42:10,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:42:10,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:10,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:10,696 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) [2022-04-05 23:42:10,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-05 23:42:10,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-04-05 23:42:10,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:10,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-05 23:42:10,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 23:42:10,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 23:42:10,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271465076] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:10,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:10,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 19 [2022-04-05 23:42:10,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789396173] [2022-04-05 23:42:10,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:10,971 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 23:42:10,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:10,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 23:42:10,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-04-05 23:42:10,972 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) [2022-04-05 23:42:11,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:11,235 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2022-04-05 23:42:11,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-05 23:42:11,236 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 [2022-04-05 23:42:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:11,236 INFO L225 Difference]: With dead ends: 94 [2022-04-05 23:42:11,236 INFO L226 Difference]: Without dead ends: 65 [2022-04-05 23:42:11,237 INFO L912 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 [2022-04-05 23:42:11,238 INFO L913 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 [2022-04-05 23:42:11,238 INFO L914 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] [2022-04-05 23:42:11,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-04-05 23:42:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-04-05 23:42:11,246 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) [2022-04-05 23:42:11,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2022-04-05 23:42:11,246 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 61 [2022-04-05 23:42:11,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:11,246 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2022-04-05 23:42:11,246 INFO L479 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) [2022-04-05 23:42:11,247 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2022-04-05 23:42:11,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-05 23:42:11,249 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:11,249 INFO L499 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:11,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:11,450 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-05 23:42:11,450 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:11,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1248681427, now seen corresponding path program 12 times [2022-04-05 23:42:11,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:11,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76353125] [2022-04-05 23:42:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:11,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:11,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:11,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 23:42:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:11,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-05 23:42:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:11,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 23:42:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:11,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 23:42:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:11,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 23:42:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 23:42:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 23:42:11,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:11,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76353125] [2022-04-05 23:42:11,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76353125] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:11,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574259606] [2022-04-05 23:42:11,564 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:42:11,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:11,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:11,565 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) [2022-04-05 23:42:11,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-05 23:42:11,612 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-04-05 23:42:11,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:11,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-05 23:42:11,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 23:42:11,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 23:42:11,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574259606] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:11,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:11,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 16 [2022-04-05 23:42:11,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595621144] [2022-04-05 23:42:11,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:11,890 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 23:42:11,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:11,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 23:42:11,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-04-05 23:42:11,891 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) [2022-04-05 23:42:12,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:12,098 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2022-04-05 23:42:12,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 23:42:12,098 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 [2022-04-05 23:42:12,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:12,099 INFO L225 Difference]: With dead ends: 78 [2022-04-05 23:42:12,099 INFO L226 Difference]: Without dead ends: 76 [2022-04-05 23:42:12,100 INFO L912 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 [2022-04-05 23:42:12,100 INFO L913 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 [2022-04-05 23:42:12,100 INFO L914 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] [2022-04-05 23:42:12,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-04-05 23:42:12,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2022-04-05 23:42:12,106 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) [2022-04-05 23:42:12,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2022-04-05 23:42:12,107 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 62 [2022-04-05 23:42:12,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:12,107 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2022-04-05 23:42:12,107 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-05 23:42:12,108 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2022-04-05 23:42:12,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 23:42:12,108 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:12,108 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:12,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:12,331 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-05 23:42:12,331 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:12,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:12,331 INFO L85 PathProgramCache]: Analyzing trace with hash 72960294, now seen corresponding path program 13 times [2022-04-05 23:42:12,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:12,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632484315] [2022-04-05 23:42:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:12,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:12,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-05 23:42:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-05 23:42:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:12,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 23:42:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 23:42:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 23:42:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:12,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 23:42:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:12,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:42:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 23:42:12,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:12,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632484315] [2022-04-05 23:42:12,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632484315] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:12,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638942281] [2022-04-05 23:42:12,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:42:12,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:12,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:12,487 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) [2022-04-05 23:42:12,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-05 23:42:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:12,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-05 23:42:12,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 23:42:12,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 23:42:12,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638942281] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:12,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:12,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 21 [2022-04-05 23:42:12,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008740753] [2022-04-05 23:42:12,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:12,779 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 23:42:12,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 23:42:12,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-04-05 23:42:12,780 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) [2022-04-05 23:42:13,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:13,056 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2022-04-05 23:42:13,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 23:42:13,057 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 [2022-04-05 23:42:13,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:13,058 INFO L225 Difference]: With dead ends: 105 [2022-04-05 23:42:13,058 INFO L226 Difference]: Without dead ends: 73 [2022-04-05 23:42:13,062 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=1088, Unknown=0, NotChecked=0, Total=1406 [2022-04-05 23:42:13,064 INFO L913 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 [2022-04-05 23:42:13,064 INFO L914 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] [2022-04-05 23:42:13,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-04-05 23:42:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-04-05 23:42:13,076 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) [2022-04-05 23:42:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-04-05 23:42:13,077 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 69 [2022-04-05 23:42:13,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:13,077 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-04-05 23:42:13,077 INFO L479 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) [2022-04-05 23:42:13,077 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-04-05 23:42:13,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-05 23:42:13,078 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:13,078 INFO L499 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:13,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:13,291 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:13,291 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:13,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:13,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1918645900, now seen corresponding path program 14 times [2022-04-05 23:42:13,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:13,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439267310] [2022-04-05 23:42:13,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:13,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:13,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 23:42:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:13,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 23:42:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:13,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-05 23:42:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:13,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 23:42:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:13,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 23:42:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:13,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 23:42:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:13,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:42:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 23:42:13,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:13,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439267310] [2022-04-05 23:42:13,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439267310] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:13,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127260583] [2022-04-05 23:42:13,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:42:13,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:13,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:13,448 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) [2022-04-05 23:42:13,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-05 23:42:13,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:42:13,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:13,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-05 23:42:13,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 23:42:13,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-05 23:42:13,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127260583] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:13,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:13,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 17 [2022-04-05 23:42:13,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090762572] [2022-04-05 23:42:13,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:13,766 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-05 23:42:13,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:13,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-05 23:42:13,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-04-05 23:42:13,767 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) [2022-04-05 23:42:13,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:13,969 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2022-04-05 23:42:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 23:42:13,970 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 [2022-04-05 23:42:13,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:13,970 INFO L225 Difference]: With dead ends: 86 [2022-04-05 23:42:13,970 INFO L226 Difference]: Without dead ends: 84 [2022-04-05 23:42:13,971 INFO L912 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 [2022-04-05 23:42:13,971 INFO L913 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 [2022-04-05 23:42:13,972 INFO L914 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] [2022-04-05 23:42:13,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-04-05 23:42:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2022-04-05 23:42:13,977 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) [2022-04-05 23:42:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2022-04-05 23:42:13,977 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 70 [2022-04-05 23:42:13,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:13,978 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2022-04-05 23:42:13,978 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 9 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-05 23:42:13,978 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2022-04-05 23:42:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-05 23:42:13,979 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:13,979 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:14,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:14,179 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-05 23:42:14,179 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:14,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1108288537, now seen corresponding path program 15 times [2022-04-05 23:42:14,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:14,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831060913] [2022-04-05 23:42:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:14,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:14,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 23:42:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:14,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 23:42:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:14,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-05 23:42:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:14,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 23:42:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:14,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 23:42:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:14,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 23:42:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:14,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:42:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:14,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:42:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 23:42:14,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:14,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831060913] [2022-04-05 23:42:14,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831060913] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:14,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628390835] [2022-04-05 23:42:14,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:42:14,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:14,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:14,385 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) [2022-04-05 23:42:14,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-05 23:42:14,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-04-05 23:42:14,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:14,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2022-04-05 23:42:14,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 23:42:14,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 23:42:14,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628390835] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:14,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:14,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 23 [2022-04-05 23:42:14,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736046786] [2022-04-05 23:42:14,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:14,717 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-05 23:42:14,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:14,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-05 23:42:14,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2022-04-05 23:42:14,718 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) [2022-04-05 23:42:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:15,012 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2022-04-05 23:42:15,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-05 23:42:15,013 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 [2022-04-05 23:42:15,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:15,013 INFO L225 Difference]: With dead ends: 116 [2022-04-05 23:42:15,013 INFO L226 Difference]: Without dead ends: 81 [2022-04-05 23:42:15,014 INFO L912 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 [2022-04-05 23:42:15,015 INFO L913 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 [2022-04-05 23:42:15,015 INFO L914 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] [2022-04-05 23:42:15,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-04-05 23:42:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-04-05 23:42:15,020 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) [2022-04-05 23:42:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-04-05 23:42:15,021 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 77 [2022-04-05 23:42:15,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:15,021 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-04-05 23:42:15,021 INFO L479 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) [2022-04-05 23:42:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-04-05 23:42:15,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-05 23:42:15,022 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:15,022 INFO L499 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:15,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:15,227 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-05 23:42:15,227 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:15,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:15,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2012939085, now seen corresponding path program 16 times [2022-04-05 23:42:15,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:15,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976945742] [2022-04-05 23:42:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:15,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:15,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 23:42:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:15,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-05 23:42:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:15,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 23:42:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 23:42:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:15,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 23:42:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:15,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 23:42:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:42:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:15,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:42:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 23:42:15,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:15,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976945742] [2022-04-05 23:42:15,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976945742] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:15,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802355541] [2022-04-05 23:42:15,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:42:15,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:15,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:15,364 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) [2022-04-05 23:42:15,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-05 23:42:15,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:42:15,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:15,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-05 23:42:15,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 23:42:15,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-05 23:42:15,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802355541] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:15,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:15,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 18 [2022-04-05 23:42:15,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486329113] [2022-04-05 23:42:15,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:15,719 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-05 23:42:15,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:15,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-05 23:42:15,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-04-05 23:42:15,720 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) [2022-04-05 23:42:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:15,961 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2022-04-05 23:42:15,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-05 23:42:15,963 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 [2022-04-05 23:42:15,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:15,964 INFO L225 Difference]: With dead ends: 94 [2022-04-05 23:42:15,964 INFO L226 Difference]: Without dead ends: 92 [2022-04-05 23:42:15,964 INFO L912 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 [2022-04-05 23:42:15,965 INFO L913 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 [2022-04-05 23:42:15,965 INFO L914 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] [2022-04-05 23:42:15,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-04-05 23:42:15,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2022-04-05 23:42:15,969 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) [2022-04-05 23:42:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2022-04-05 23:42:15,970 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 78 [2022-04-05 23:42:15,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:15,970 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2022-04-05 23:42:15,970 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 15 states have internal predecessors, (42), 10 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-05 23:42:15,970 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2022-04-05 23:42:15,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-04-05 23:42:15,971 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:15,971 INFO L499 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:15,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:16,171 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-04-05 23:42:16,171 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:16,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:16,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1961401338, now seen corresponding path program 17 times [2022-04-05 23:42:16,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:16,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816964566] [2022-04-05 23:42:16,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:16,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:16,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:16,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-05 23:42:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:16,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-05 23:42:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:16,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 23:42:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 23:42:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:16,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 23:42:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:16,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 23:42:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:16,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:42:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:16,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:42:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:42:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-05 23:42:16,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:16,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816964566] [2022-04-05 23:42:16,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816964566] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:16,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883482123] [2022-04-05 23:42:16,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:42:16,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:16,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:16,399 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) [2022-04-05 23:42:16,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-05 23:42:16,469 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-04-05 23:42:16,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:16,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 22 conjunts are in the unsatisfiable core [2022-04-05 23:42:16,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-05 23:42:16,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-05 23:42:16,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883482123] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:16,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:16,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 25 [2022-04-05 23:42:16,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567444816] [2022-04-05 23:42:16,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:16,752 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-05 23:42:16,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:16,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-05 23:42:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2022-04-05 23:42:16,753 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) [2022-04-05 23:42:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:17,097 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2022-04-05 23:42:17,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-05 23:42:17,098 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 [2022-04-05 23:42:17,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:17,098 INFO L225 Difference]: With dead ends: 127 [2022-04-05 23:42:17,099 INFO L226 Difference]: Without dead ends: 89 [2022-04-05 23:42:17,099 INFO L912 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 [2022-04-05 23:42:17,100 INFO L913 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 23:42:17,100 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 57 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 23:42:17,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-04-05 23:42:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-04-05 23:42:17,106 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) [2022-04-05 23:42:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2022-04-05 23:42:17,107 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 85 [2022-04-05 23:42:17,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:17,107 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2022-04-05 23:42:17,107 INFO L479 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) [2022-04-05 23:42:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2022-04-05 23:42:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-04-05 23:42:17,108 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:17,108 INFO L499 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:17,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:17,323 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:17,323 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:17,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:17,324 INFO L85 PathProgramCache]: Analyzing trace with hash 458147180, now seen corresponding path program 18 times [2022-04-05 23:42:17,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:17,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417118422] [2022-04-05 23:42:17,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:17,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:17,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 23:42:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 23:42:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:17,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 23:42:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:17,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 23:42:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:17,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 23:42:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 23:42:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:17,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:42:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:17,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:42:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:17,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:42:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-05 23:42:17,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:17,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417118422] [2022-04-05 23:42:17,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417118422] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:17,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475864869] [2022-04-05 23:42:17,484 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:42:17,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:17,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:17,487 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) [2022-04-05 23:42:17,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-04-05 23:42:17,565 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-04-05 23:42:17,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:17,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-05 23:42:17,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-05 23:42:17,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-04-05 23:42:17,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475864869] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:17,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:17,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 19 [2022-04-05 23:42:17,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147203538] [2022-04-05 23:42:17,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:17,878 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-05 23:42:17,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:17,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-05 23:42:17,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-04-05 23:42:17,879 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) [2022-04-05 23:42:18,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:18,154 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2022-04-05 23:42:18,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-05 23:42:18,154 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 [2022-04-05 23:42:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:18,155 INFO L225 Difference]: With dead ends: 102 [2022-04-05 23:42:18,155 INFO L226 Difference]: Without dead ends: 100 [2022-04-05 23:42:18,156 INFO L912 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 [2022-04-05 23:42:18,156 INFO L913 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, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 23:42:18,156 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 50 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 23:42:18,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-04-05 23:42:18,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2022-04-05 23:42:18,163 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) [2022-04-05 23:42:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-04-05 23:42:18,164 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 86 [2022-04-05 23:42:18,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:18,164 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-04-05 23:42:18,164 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 16 states have internal predecessors, (45), 11 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 23:42:18,164 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-04-05 23:42:18,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-04-05 23:42:18,165 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:18,165 INFO L499 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:18,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:18,371 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:18,372 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:18,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:18,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1286197511, now seen corresponding path program 19 times [2022-04-05 23:42:18,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:18,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606823379] [2022-04-05 23:42:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:18,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-05 23:42:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 23:42:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 23:42:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 23:42:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 23:42:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 23:42:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:42:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:42:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:42:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:42:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 23:42:18,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:18,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606823379] [2022-04-05 23:42:18,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606823379] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:18,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145422218] [2022-04-05 23:42:18,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:42:18,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:18,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:18,600 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) [2022-04-05 23:42:18,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-04-05 23:42:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:18,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2022-04-05 23:42:18,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 23:42:18,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 23:42:18,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145422218] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:18,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:18,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 27 [2022-04-05 23:42:18,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279709041] [2022-04-05 23:42:18,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:18,927 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-04-05 23:42:18,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:18,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-04-05 23:42:18,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2022-04-05 23:42:18,928 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) [2022-04-05 23:42:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:19,323 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2022-04-05 23:42:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-05 23:42:19,323 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 [2022-04-05 23:42:19,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:19,324 INFO L225 Difference]: With dead ends: 138 [2022-04-05 23:42:19,324 INFO L226 Difference]: Without dead ends: 97 [2022-04-05 23:42:19,325 INFO L912 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 [2022-04-05 23:42:19,325 INFO L913 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, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 23:42:19,325 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 53 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 23:42:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-04-05 23:42:19,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-04-05 23:42:19,332 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) [2022-04-05 23:42:19,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2022-04-05 23:42:19,332 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 93 [2022-04-05 23:42:19,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:19,333 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2022-04-05 23:42:19,333 INFO L479 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) [2022-04-05 23:42:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2022-04-05 23:42:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-04-05 23:42:19,334 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:19,334 INFO L499 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:19,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:19,543 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-04-05 23:42:19,543 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:19,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:19,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1221301139, now seen corresponding path program 20 times [2022-04-05 23:42:19,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:19,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253632646] [2022-04-05 23:42:19,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:19,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:19,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:19,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 23:42:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:19,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 23:42:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:19,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 23:42:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 23:42:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:19,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 23:42:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:19,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 23:42:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:19,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:42:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:19,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:42:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:42:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:19,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:42:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 23:42:19,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:19,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253632646] [2022-04-05 23:42:19,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253632646] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:19,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457806331] [2022-04-05 23:42:19,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:42:19,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:19,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:19,700 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) [2022-04-05 23:42:19,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-04-05 23:42:19,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:42:19,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:19,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 25 conjunts are in the unsatisfiable core [2022-04-05 23:42:19,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 23:42:19,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 23:42:20,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457806331] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:20,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:20,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 20 [2022-04-05 23:42:20,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837635138] [2022-04-05 23:42:20,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:20,078 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 23:42:20,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:20,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 23:42:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-04-05 23:42:20,079 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) [2022-04-05 23:42:20,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:20,367 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2022-04-05 23:42:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-05 23:42:20,369 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 [2022-04-05 23:42:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:20,370 INFO L225 Difference]: With dead ends: 110 [2022-04-05 23:42:20,370 INFO L226 Difference]: Without dead ends: 108 [2022-04-05 23:42:20,371 INFO L912 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 [2022-04-05 23:42:20,371 INFO L913 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 [2022-04-05 23:42:20,371 INFO L914 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] [2022-04-05 23:42:20,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-04-05 23:42:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2022-04-05 23:42:20,377 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) [2022-04-05 23:42:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2022-04-05 23:42:20,378 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 94 [2022-04-05 23:42:20,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:20,378 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2022-04-05 23:42:20,378 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 12 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-05 23:42:20,379 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2022-04-05 23:42:20,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-05 23:42:20,381 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:20,381 INFO L499 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:20,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:20,603 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-04-05 23:42:20,604 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:20,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1052018970, now seen corresponding path program 21 times [2022-04-05 23:42:20,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:20,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506695979] [2022-04-05 23:42:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:20,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-05 23:42:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 23:42:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 23:42:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 23:42:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 23:42:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 23:42:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:42:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:42:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:42:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:42:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:42:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-04-05 23:42:20,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:20,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506695979] [2022-04-05 23:42:20,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506695979] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:20,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127981818] [2022-04-05 23:42:20,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:42:20,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:20,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:20,868 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) [2022-04-05 23:42:20,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-04-05 23:42:20,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-04-05 23:42:20,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:20,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-05 23:42:20,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-04-05 23:42:21,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-04-05 23:42:21,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127981818] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:21,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:21,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 29 [2022-04-05 23:42:21,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641483172] [2022-04-05 23:42:21,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:21,263 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-04-05 23:42:21,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:21,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-04-05 23:42:21,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-04-05 23:42:21,264 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) [2022-04-05 23:42:21,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:21,732 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2022-04-05 23:42:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-04-05 23:42:21,733 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 [2022-04-05 23:42:21,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:21,734 INFO L225 Difference]: With dead ends: 149 [2022-04-05 23:42:21,734 INFO L226 Difference]: Without dead ends: 105 [2022-04-05 23:42:21,735 INFO L912 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 [2022-04-05 23:42:21,735 INFO L913 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 [2022-04-05 23:42:21,736 INFO L914 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] [2022-04-05 23:42:21,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-04-05 23:42:21,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-04-05 23:42:21,743 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) [2022-04-05 23:42:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-04-05 23:42:21,744 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 101 [2022-04-05 23:42:21,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:21,744 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-04-05 23:42:21,748 INFO L479 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) [2022-04-05 23:42:21,748 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-04-05 23:42:21,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-05 23:42:21,749 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:21,749 INFO L499 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:21,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:21,962 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:21,962 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:21,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:21,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2075177908, now seen corresponding path program 22 times [2022-04-05 23:42:21,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:21,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085613087] [2022-04-05 23:42:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:21,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 23:42:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 23:42:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 23:42:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 23:42:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 23:42:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 23:42:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:42:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:42:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:42:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:42:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:42:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-04-05 23:42:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:22,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085613087] [2022-04-05 23:42:22,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085613087] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:22,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802295695] [2022-04-05 23:42:22,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:42:22,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:22,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:22,156 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) [2022-04-05 23:42:22,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-04-05 23:42:22,217 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:42:22,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:22,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 27 conjunts are in the unsatisfiable core [2022-04-05 23:42:22,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-04-05 23:42:22,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-04-05 23:42:22,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802295695] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:22,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:22,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 21 [2022-04-05 23:42:22,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423070264] [2022-04-05 23:42:22,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:22,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-05 23:42:22,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:22,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-05 23:42:22,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-04-05 23:42:22,603 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) [2022-04-05 23:42:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:22,902 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2022-04-05 23:42:22,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-05 23:42:22,903 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 [2022-04-05 23:42:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:22,904 INFO L225 Difference]: With dead ends: 118 [2022-04-05 23:42:22,904 INFO L226 Difference]: Without dead ends: 116 [2022-04-05 23:42:22,904 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-04-05 23:42:22,905 INFO L913 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 [2022-04-05 23:42:22,905 INFO L914 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] [2022-04-05 23:42:22,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-04-05 23:42:22,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2022-04-05 23:42:22,913 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) [2022-04-05 23:42:22,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2022-04-05 23:42:22,913 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 102 [2022-04-05 23:42:22,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:22,914 INFO L478 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2022-04-05 23:42:22,914 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 18 states have internal predecessors, (51), 13 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 23:42:22,914 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2022-04-05 23:42:22,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-04-05 23:42:22,916 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:22,916 INFO L499 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:22,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-04-05 23:42:23,130 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:23,131 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:23,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:23,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2043818457, now seen corresponding path program 23 times [2022-04-05 23:42:23,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:23,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295172986] [2022-04-05 23:42:23,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:23,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-05 23:42:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 23:42:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 23:42:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 23:42:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 23:42:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 23:42:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:42:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:42:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:42:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:42:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:42:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:42:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 23:42:23,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:23,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295172986] [2022-04-05 23:42:23,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295172986] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:23,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350590593] [2022-04-05 23:42:23,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:42:23,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:23,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:23,444 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) [2022-04-05 23:42:23,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-04-05 23:42:23,512 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-04-05 23:42:23,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:23,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 28 conjunts are in the unsatisfiable core [2022-04-05 23:42:23,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 23:42:23,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 23:42:23,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350590593] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:23,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:23,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 31 [2022-04-05 23:42:23,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37118109] [2022-04-05 23:42:23,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:23,845 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-04-05 23:42:23,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:23,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-04-05 23:42:23,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2022-04-05 23:42:23,846 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) [2022-04-05 23:42:24,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:24,409 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2022-04-05 23:42:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-05 23:42:24,411 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 [2022-04-05 23:42:24,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:24,412 INFO L225 Difference]: With dead ends: 160 [2022-04-05 23:42:24,412 INFO L226 Difference]: Without dead ends: 113 [2022-04-05 23:42:24,413 INFO L912 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 [2022-04-05 23:42:24,413 INFO L913 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, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 23:42:24,414 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 90 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 23:42:24,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-04-05 23:42:24,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-04-05 23:42:24,422 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) [2022-04-05 23:42:24,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2022-04-05 23:42:24,422 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 109 [2022-04-05 23:42:24,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:24,423 INFO L478 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2022-04-05 23:42:24,423 INFO L479 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) [2022-04-05 23:42:24,423 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2022-04-05 23:42:24,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-04-05 23:42:24,423 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:24,424 INFO L499 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:24,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-04-05 23:42:24,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-04-05 23:42:24,639 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1714365043, now seen corresponding path program 24 times [2022-04-05 23:42:24,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:24,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577626250] [2022-04-05 23:42:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:24,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 23:42:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 23:42:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 23:42:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 23:42:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 23:42:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 23:42:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:42:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:42:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:42:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:42:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:42:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:42:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 23:42:24,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:24,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577626250] [2022-04-05 23:42:24,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577626250] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:24,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994702354] [2022-04-05 23:42:24,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:42:24,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:24,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:24,847 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) [2022-04-05 23:42:24,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-04-05 23:42:24,920 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-04-05 23:42:24,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:24,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-05 23:42:24,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 23:42:25,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-04-05 23:42:25,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994702354] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:25,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:25,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 22 [2022-04-05 23:42:25,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223485964] [2022-04-05 23:42:25,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:25,367 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-04-05 23:42:25,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:25,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-04-05 23:42:25,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2022-04-05 23:42:25,369 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) [2022-04-05 23:42:25,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:25,701 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2022-04-05 23:42:25,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-05 23:42:25,702 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 [2022-04-05 23:42:25,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:25,703 INFO L225 Difference]: With dead ends: 126 [2022-04-05 23:42:25,703 INFO L226 Difference]: Without dead ends: 124 [2022-04-05 23:42:25,704 INFO L912 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 [2022-04-05 23:42:25,704 INFO L913 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 [2022-04-05 23:42:25,704 INFO L914 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] [2022-04-05 23:42:25,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-04-05 23:42:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2022-04-05 23:42:25,715 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) [2022-04-05 23:42:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2022-04-05 23:42:25,716 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 110 [2022-04-05 23:42:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:25,718 INFO L478 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2022-04-05 23:42:25,718 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 19 states have internal predecessors, (54), 14 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-05 23:42:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2022-04-05 23:42:25,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-04-05 23:42:25,718 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:25,719 INFO L499 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:25,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:25,936 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-04-05 23:42:25,936 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:25,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:25,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1478721990, now seen corresponding path program 25 times [2022-04-05 23:42:25,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:25,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315096547] [2022-04-05 23:42:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:25,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 23:42:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 23:42:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 23:42:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 23:42:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 23:42:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 23:42:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:42:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:42:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:42:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:42:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:42:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:42:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:42:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 23:42:26,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:26,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315096547] [2022-04-05 23:42:26,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315096547] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:26,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603503581] [2022-04-05 23:42:26,266 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:42:26,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:26,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:26,267 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) [2022-04-05 23:42:26,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-04-05 23:42:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:26,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 30 conjunts are in the unsatisfiable core [2022-04-05 23:42:26,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 23:42:26,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 23:42:26,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603503581] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:26,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:26,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 33 [2022-04-05 23:42:26,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543049064] [2022-04-05 23:42:26,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:26,735 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-04-05 23:42:26,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:26,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-04-05 23:42:26,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2022-04-05 23:42:26,736 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) [2022-04-05 23:42:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:27,281 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2022-04-05 23:42:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-04-05 23:42:27,282 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 [2022-04-05 23:42:27,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:27,283 INFO L225 Difference]: With dead ends: 171 [2022-04-05 23:42:27,283 INFO L226 Difference]: Without dead ends: 121 [2022-04-05 23:42:27,284 INFO L912 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 [2022-04-05 23:42:27,284 INFO L913 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 [2022-04-05 23:42:27,285 INFO L914 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] [2022-04-05 23:42:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-04-05 23:42:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-04-05 23:42:27,294 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) [2022-04-05 23:42:27,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2022-04-05 23:42:27,294 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 117 [2022-04-05 23:42:27,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:27,295 INFO L478 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2022-04-05 23:42:27,295 INFO L479 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) [2022-04-05 23:42:27,295 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2022-04-05 23:42:27,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-04-05 23:42:27,296 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:27,296 INFO L499 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:27,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-04-05 23:42:27,505 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-04-05 23:42:27,506 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:27,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:27,506 INFO L85 PathProgramCache]: Analyzing trace with hash 780913452, now seen corresponding path program 26 times [2022-04-05 23:42:27,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:27,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826894614] [2022-04-05 23:42:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:27,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-05 23:42:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 23:42:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 23:42:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 23:42:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 23:42:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:42:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:42:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:42:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:42:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:42:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:42:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:42:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:42:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 23:42:27,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:27,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826894614] [2022-04-05 23:42:27,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826894614] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:27,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380272886] [2022-04-05 23:42:27,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:42:27,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:27,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:27,744 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) [2022-04-05 23:42:27,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-04-05 23:42:27,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:42:27,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:27,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 31 conjunts are in the unsatisfiable core [2022-04-05 23:42:27,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 23:42:28,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-04-05 23:42:28,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380272886] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:28,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:28,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 23 [2022-04-05 23:42:28,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314007031] [2022-04-05 23:42:28,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:28,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-05 23:42:28,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:28,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-05 23:42:28,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2022-04-05 23:42:28,233 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) [2022-04-05 23:42:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:28,572 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2022-04-05 23:42:28,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-05 23:42:28,573 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 [2022-04-05 23:42:28,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:28,574 INFO L225 Difference]: With dead ends: 134 [2022-04-05 23:42:28,574 INFO L226 Difference]: Without dead ends: 132 [2022-04-05 23:42:28,575 INFO L912 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 [2022-04-05 23:42:28,575 INFO L913 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 [2022-04-05 23:42:28,575 INFO L914 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] [2022-04-05 23:42:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-04-05 23:42:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2022-04-05 23:42:28,584 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) [2022-04-05 23:42:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2022-04-05 23:42:28,584 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 118 [2022-04-05 23:42:28,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:28,585 INFO L478 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2022-04-05 23:42:28,585 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 20 states have internal predecessors, (57), 15 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 23:42:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2022-04-05 23:42:28,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-04-05 23:42:28,586 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:28,586 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:28,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:28,807 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-04-05 23:42:28,808 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:28,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:28,808 INFO L85 PathProgramCache]: Analyzing trace with hash -644951225, now seen corresponding path program 27 times [2022-04-05 23:42:28,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:28,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318298411] [2022-04-05 23:42:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:28,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-05 23:42:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 23:42:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 23:42:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 23:42:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 23:42:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:42:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:42:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:42:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:42:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:42:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:42:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:42:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:42:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:42:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 23:42:29,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:29,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318298411] [2022-04-05 23:42:29,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318298411] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:29,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369984807] [2022-04-05 23:42:29,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:42:29,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:29,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:29,229 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) [2022-04-05 23:42:29,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-04-05 23:42:29,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-04-05 23:42:29,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:29,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 32 conjunts are in the unsatisfiable core [2022-04-05 23:42:29,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:29,490 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 23:42:29,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 23:42:29,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369984807] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:29,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:29,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 35 [2022-04-05 23:42:29,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862075227] [2022-04-05 23:42:29,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:29,684 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-04-05 23:42:29,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:29,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-04-05 23:42:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2022-04-05 23:42:29,685 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) [2022-04-05 23:42:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:30,274 INFO L93 Difference]: Finished difference Result 182 states and 198 transitions. [2022-04-05 23:42:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-04-05 23:42:30,274 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 [2022-04-05 23:42:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:30,275 INFO L225 Difference]: With dead ends: 182 [2022-04-05 23:42:30,276 INFO L226 Difference]: Without dead ends: 129 [2022-04-05 23:42:30,277 INFO L912 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 [2022-04-05 23:42:30,277 INFO L913 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 [2022-04-05 23:42:30,278 INFO L914 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] [2022-04-05 23:42:30,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-04-05 23:42:30,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-04-05 23:42:30,287 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) [2022-04-05 23:42:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2022-04-05 23:42:30,288 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 125 [2022-04-05 23:42:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:30,288 INFO L478 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2022-04-05 23:42:30,288 INFO L479 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) [2022-04-05 23:42:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2022-04-05 23:42:30,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-04-05 23:42:30,289 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:30,289 INFO L499 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:30,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-04-05 23:42:30,507 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-04-05 23:42:30,507 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:30,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:30,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1591891629, now seen corresponding path program 28 times [2022-04-05 23:42:30,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:30,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938262840] [2022-04-05 23:42:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:30,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 23:42:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-05 23:42:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 23:42:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 23:42:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 23:42:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:42:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:42:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:42:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:42:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:42:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:42:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:42:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:42:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:42:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 23:42:30,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:30,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938262840] [2022-04-05 23:42:30,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938262840] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:30,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408733904] [2022-04-05 23:42:30,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:42:30,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:30,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:30,741 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) [2022-04-05 23:42:30,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-04-05 23:42:30,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:42:30,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:30,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 33 conjunts are in the unsatisfiable core [2022-04-05 23:42:30,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 23:42:31,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-04-05 23:42:31,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408733904] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:31,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:31,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 24 [2022-04-05 23:42:31,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264108554] [2022-04-05 23:42:31,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:31,220 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-04-05 23:42:31,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:31,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-04-05 23:42:31,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-04-05 23:42:31,220 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) [2022-04-05 23:42:31,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:31,593 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2022-04-05 23:42:31,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-05 23:42:31,594 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 [2022-04-05 23:42:31,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:31,595 INFO L225 Difference]: With dead ends: 142 [2022-04-05 23:42:31,595 INFO L226 Difference]: Without dead ends: 140 [2022-04-05 23:42:31,596 INFO L912 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 [2022-04-05 23:42:31,596 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 64 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-04-05 23:42:31,596 INFO L914 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] [2022-04-05 23:42:31,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-04-05 23:42:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2022-04-05 23:42:31,605 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) [2022-04-05 23:42:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2022-04-05 23:42:31,606 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 126 [2022-04-05 23:42:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:31,606 INFO L478 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2022-04-05 23:42:31,607 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 21 states have internal predecessors, (60), 16 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-05 23:42:31,607 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2022-04-05 23:42:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-04-05 23:42:31,607 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:31,607 INFO L499 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:31,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-04-05 23:42:31,823 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:31,823 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:31,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:31,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1481475238, now seen corresponding path program 29 times [2022-04-05 23:42:31,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:31,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262207564] [2022-04-05 23:42:31,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:31,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-05 23:42:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-05 23:42:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 23:42:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 23:42:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 23:42:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:42:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:42:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:42:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:42:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:42:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:42:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:42:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:42:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:42:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:42:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 23:42:32,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:32,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262207564] [2022-04-05 23:42:32,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262207564] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:32,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072984610] [2022-04-05 23:42:32,219 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:42:32,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:32,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:32,223 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) [2022-04-05 23:42:32,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-04-05 23:42:32,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-04-05 23:42:32,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:32,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 34 conjunts are in the unsatisfiable core [2022-04-05 23:42:32,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 23:42:32,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 23:42:32,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072984610] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:32,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:32,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 37 [2022-04-05 23:42:32,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390345263] [2022-04-05 23:42:32,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:32,678 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-04-05 23:42:32,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:32,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-04-05 23:42:32,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2022-04-05 23:42:32,679 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) [2022-04-05 23:42:33,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:33,350 INFO L93 Difference]: Finished difference Result 193 states and 210 transitions. [2022-04-05 23:42:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-04-05 23:42:33,351 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 [2022-04-05 23:42:33,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:33,352 INFO L225 Difference]: With dead ends: 193 [2022-04-05 23:42:33,352 INFO L226 Difference]: Without dead ends: 137 [2022-04-05 23:42:33,353 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1006, Invalid=3824, Unknown=0, NotChecked=0, Total=4830 [2022-04-05 23:42:33,354 INFO L913 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 [2022-04-05 23:42:33,354 INFO L914 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] [2022-04-05 23:42:33,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-04-05 23:42:33,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-04-05 23:42:33,364 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) [2022-04-05 23:42:33,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2022-04-05 23:42:33,365 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 133 [2022-04-05 23:42:33,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:33,365 INFO L478 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2022-04-05 23:42:33,366 INFO L479 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) [2022-04-05 23:42:33,366 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2022-04-05 23:42:33,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-04-05 23:42:33,366 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:33,366 INFO L499 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:33,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:33,584 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-04-05 23:42:33,584 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:33,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash -223198708, now seen corresponding path program 30 times [2022-04-05 23:42:33,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:33,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968746190] [2022-04-05 23:42:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:33,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-05 23:42:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 23:42:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 23:42:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 23:42:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 23:42:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:42:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:42:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:42:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:42:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:42:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:42:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:42:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:42:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:42:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:42:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 23:42:33,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:33,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968746190] [2022-04-05 23:42:33,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968746190] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:33,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419048892] [2022-04-05 23:42:33,858 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:42:33,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:33,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:33,859 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) [2022-04-05 23:42:33,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-04-05 23:42:33,949 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2022-04-05 23:42:33,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:33,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 35 conjunts are in the unsatisfiable core [2022-04-05 23:42:33,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 23:42:34,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-04-05 23:42:34,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419048892] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:34,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:34,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 25 [2022-04-05 23:42:34,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007459026] [2022-04-05 23:42:34,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:34,416 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-05 23:42:34,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:34,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-05 23:42:34,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2022-04-05 23:42:34,417 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) [2022-04-05 23:42:34,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:34,806 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2022-04-05 23:42:34,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-04-05 23:42:34,807 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 [2022-04-05 23:42:34,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:34,808 INFO L225 Difference]: With dead ends: 150 [2022-04-05 23:42:34,808 INFO L226 Difference]: Without dead ends: 148 [2022-04-05 23:42:34,809 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 311 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=550, Invalid=1520, Unknown=0, NotChecked=0, Total=2070 [2022-04-05 23:42:34,810 INFO L913 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 [2022-04-05 23:42:34,810 INFO L914 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] [2022-04-05 23:42:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-04-05 23:42:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2022-04-05 23:42:34,822 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) [2022-04-05 23:42:34,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2022-04-05 23:42:34,824 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 134 [2022-04-05 23:42:34,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:34,824 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2022-04-05 23:42:34,825 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 17 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 23:42:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2022-04-05 23:42:34,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-04-05 23:42:34,826 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:34,826 INFO L499 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:34,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:35,050 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:35,050 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:35,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:35,051 INFO L85 PathProgramCache]: Analyzing trace with hash -295772057, now seen corresponding path program 31 times [2022-04-05 23:42:35,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:35,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531574923] [2022-04-05 23:42:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:35,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-04-05 23:42:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 23:42:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 23:42:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 23:42:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 23:42:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:42:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:42:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:42:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:42:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:42:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:42:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:42:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:42:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:42:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:42:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:42:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 23:42:35,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:35,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531574923] [2022-04-05 23:42:35,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531574923] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:35,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147845050] [2022-04-05 23:42:35,486 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:42:35,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:35,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:35,487 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) [2022-04-05 23:42:35,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-04-05 23:42:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:35,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 36 conjunts are in the unsatisfiable core [2022-04-05 23:42:35,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 23:42:35,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 23:42:36,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147845050] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:36,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:36,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 39 [2022-04-05 23:42:36,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347782445] [2022-04-05 23:42:36,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:36,018 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-04-05 23:42:36,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:36,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-04-05 23:42:36,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2022-04-05 23:42:36,019 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) [2022-04-05 23:42:36,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:36,785 INFO L93 Difference]: Finished difference Result 204 states and 222 transitions. [2022-04-05 23:42:36,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-04-05 23:42:36,785 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 [2022-04-05 23:42:36,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:36,786 INFO L225 Difference]: With dead ends: 204 [2022-04-05 23:42:36,786 INFO L226 Difference]: Without dead ends: 145 [2022-04-05 23:42:36,787 INFO L912 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 [2022-04-05 23:42:36,787 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-04-05 23:42:36,788 INFO L914 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] [2022-04-05 23:42:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-04-05 23:42:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-04-05 23:42:36,799 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) [2022-04-05 23:42:36,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2022-04-05 23:42:36,799 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 141 [2022-04-05 23:42:36,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:36,800 INFO L478 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2022-04-05 23:42:36,800 INFO L479 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) [2022-04-05 23:42:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2022-04-05 23:42:36,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-04-05 23:42:36,801 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:36,801 INFO L499 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:36,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:37,015 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:37,015 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:37,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:37,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2113591245, now seen corresponding path program 32 times [2022-04-05 23:42:37,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:37,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418294089] [2022-04-05 23:42:37,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:37,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 23:42:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 23:42:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 23:42:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 23:42:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 23:42:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:42:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:42:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:42:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:42:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:42:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:42:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:42:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:42:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:42:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:42:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:42:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 23:42:37,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:37,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418294089] [2022-04-05 23:42:37,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418294089] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:37,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740951114] [2022-04-05 23:42:37,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:42:37,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:37,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:37,285 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) [2022-04-05 23:42:37,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-04-05 23:42:37,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:42:37,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:37,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 37 conjunts are in the unsatisfiable core [2022-04-05 23:42:37,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 23:42:37,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-04-05 23:42:37,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740951114] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:37,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:37,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 26 [2022-04-05 23:42:37,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279886077] [2022-04-05 23:42:37,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:37,805 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-04-05 23:42:37,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:37,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-04-05 23:42:37,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2022-04-05 23:42:37,806 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) [2022-04-05 23:42:38,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:38,235 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2022-04-05 23:42:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-05 23:42:38,236 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 [2022-04-05 23:42:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:38,237 INFO L225 Difference]: With dead ends: 158 [2022-04-05 23:42:38,237 INFO L226 Difference]: Without dead ends: 156 [2022-04-05 23:42:38,237 INFO L912 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 [2022-04-05 23:42:38,238 INFO L913 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 [2022-04-05 23:42:38,238 INFO L914 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] [2022-04-05 23:42:38,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-04-05 23:42:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2022-04-05 23:42:38,249 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) [2022-04-05 23:42:38,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2022-04-05 23:42:38,250 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 142 [2022-04-05 23:42:38,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:38,251 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2022-04-05 23:42:38,251 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 23 states have internal predecessors, (66), 18 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-05 23:42:38,251 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2022-04-05 23:42:38,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-04-05 23:42:38,252 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:38,252 INFO L499 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:38,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-04-05 23:42:38,467 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-04-05 23:42:38,467 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:38,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:38,468 INFO L85 PathProgramCache]: Analyzing trace with hash 32997254, now seen corresponding path program 33 times [2022-04-05 23:42:38,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:38,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838142976] [2022-04-05 23:42:38,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:38,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-05 23:42:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 23:42:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 23:42:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 23:42:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 23:42:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:42:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:42:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:42:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:42:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:42:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:42:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:42:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:42:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:42:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:42:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:42:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:42:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 23:42:38,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:38,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838142976] [2022-04-05 23:42:38,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838142976] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:38,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406093107] [2022-04-05 23:42:38,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:42:38,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:38,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:38,972 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) [2022-04-05 23:42:38,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-04-05 23:42:39,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-04-05 23:42:39,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:39,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 38 conjunts are in the unsatisfiable core [2022-04-05 23:42:39,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 23:42:39,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 23:42:39,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406093107] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:39,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:39,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 41 [2022-04-05 23:42:39,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407718197] [2022-04-05 23:42:39,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:39,548 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-04-05 23:42:39,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:39,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-04-05 23:42:39,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2022-04-05 23:42:39,548 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) [2022-04-05 23:42:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:40,337 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2022-04-05 23:42:40,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-04-05 23:42:40,338 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 [2022-04-05 23:42:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:40,338 INFO L225 Difference]: With dead ends: 215 [2022-04-05 23:42:40,339 INFO L226 Difference]: Without dead ends: 153 [2022-04-05 23:42:40,339 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1238, Invalid=4768, Unknown=0, NotChecked=0, Total=6006 [2022-04-05 23:42:40,340 INFO L913 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 [2022-04-05 23:42:40,340 INFO L914 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] [2022-04-05 23:42:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-04-05 23:42:40,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-04-05 23:42:40,352 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) [2022-04-05 23:42:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2022-04-05 23:42:40,353 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 149 [2022-04-05 23:42:40,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:40,353 INFO L478 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2022-04-05 23:42:40,353 INFO L479 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) [2022-04-05 23:42:40,354 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2022-04-05 23:42:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-04-05 23:42:40,354 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:40,354 INFO L499 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:40,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:40,577 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-04-05 23:42:40,577 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:40,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash -521096980, now seen corresponding path program 34 times [2022-04-05 23:42:40,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:40,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697943474] [2022-04-05 23:42:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:40,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 23:42:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 23:42:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 23:42:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 23:42:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 23:42:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:42:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:42:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:42:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:42:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:42:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:42:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:42:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:42:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:42:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:42:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:42:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:42:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 23:42:40,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:40,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697943474] [2022-04-05 23:42:40,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697943474] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:40,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610784812] [2022-04-05 23:42:40,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:42:40,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:40,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:40,863 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) [2022-04-05 23:42:40,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-04-05 23:42:40,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:42:40,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:40,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 39 conjunts are in the unsatisfiable core [2022-04-05 23:42:40,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 23:42:41,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-04-05 23:42:41,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610784812] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:41,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:41,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 27 [2022-04-05 23:42:41,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870070826] [2022-04-05 23:42:41,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:41,403 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-04-05 23:42:41,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:41,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-04-05 23:42:41,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2022-04-05 23:42:41,404 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) [2022-04-05 23:42:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:41,785 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2022-04-05 23:42:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-05 23:42:41,786 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 [2022-04-05 23:42:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:41,787 INFO L225 Difference]: With dead ends: 166 [2022-04-05 23:42:41,787 INFO L226 Difference]: Without dead ends: 164 [2022-04-05 23:42:41,787 INFO L912 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 [2022-04-05 23:42:41,788 INFO L913 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 [2022-04-05 23:42:41,788 INFO L914 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] [2022-04-05 23:42:41,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-04-05 23:42:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2022-04-05 23:42:41,800 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) [2022-04-05 23:42:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2022-04-05 23:42:41,801 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 150 [2022-04-05 23:42:41,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:41,801 INFO L478 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2022-04-05 23:42:41,801 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 24 states have internal predecessors, (69), 19 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-05 23:42:41,801 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2022-04-05 23:42:41,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-04-05 23:42:41,802 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:41,802 INFO L499 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:41,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-04-05 23:42:42,011 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-04-05 23:42:42,011 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:42,012 INFO L85 PathProgramCache]: Analyzing trace with hash -995101305, now seen corresponding path program 35 times [2022-04-05 23:42:42,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:42,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124542801] [2022-04-05 23:42:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:42,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 23:42:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 23:42:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 23:42:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 23:42:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 23:42:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:42:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:42:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:42:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:42:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:42:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:42:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:42:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:42:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:42:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:42:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:42:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:42:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:42:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 23:42:42,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:42,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124542801] [2022-04-05 23:42:42,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124542801] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:42,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592078316] [2022-04-05 23:42:42,528 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:42:42,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:42,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:42,530 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) [2022-04-05 23:42:42,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-04-05 23:42:42,598 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2022-04-05 23:42:42,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:42,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 40 conjunts are in the unsatisfiable core [2022-04-05 23:42:42,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 23:42:42,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 23:42:43,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592078316] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:43,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:43,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 43 [2022-04-05 23:42:43,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383353794] [2022-04-05 23:42:43,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:43,070 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-04-05 23:42:43,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:43,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-04-05 23:42:43,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2022-04-05 23:42:43,071 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) [2022-04-05 23:42:43,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:43,865 INFO L93 Difference]: Finished difference Result 226 states and 246 transitions. [2022-04-05 23:42:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-04-05 23:42:43,865 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 [2022-04-05 23:42:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:43,867 INFO L225 Difference]: With dead ends: 226 [2022-04-05 23:42:43,867 INFO L226 Difference]: Without dead ends: 161 [2022-04-05 23:42:43,868 INFO L912 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 [2022-04-05 23:42:43,869 INFO L913 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 [2022-04-05 23:42:43,870 INFO L914 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] [2022-04-05 23:42:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-04-05 23:42:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-04-05 23:42:43,883 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) [2022-04-05 23:42:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2022-04-05 23:42:43,883 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 157 [2022-04-05 23:42:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:43,884 INFO L478 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2022-04-05 23:42:43,884 INFO L479 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) [2022-04-05 23:42:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2022-04-05 23:42:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-04-05 23:42:43,885 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:43,885 INFO L499 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:43,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-04-05 23:42:44,107 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:44,108 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:44,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:44,108 INFO L85 PathProgramCache]: Analyzing trace with hash -953392915, now seen corresponding path program 36 times [2022-04-05 23:42:44,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:44,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42221874] [2022-04-05 23:42:44,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:44,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 23:42:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 23:42:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 23:42:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 23:42:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 23:42:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:42:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:42:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:42:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:42:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:42:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:42:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:42:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:42:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:42:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:42:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:42:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:42:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:42:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 23:42:44,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:44,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42221874] [2022-04-05 23:42:44,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42221874] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:44,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447542818] [2022-04-05 23:42:44,394 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:42:44,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:44,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:44,395 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) [2022-04-05 23:42:44,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-04-05 23:42:44,482 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-04-05 23:42:44,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:44,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 41 conjunts are in the unsatisfiable core [2022-04-05 23:42:44,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 23:42:44,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-04-05 23:42:45,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447542818] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:45,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:45,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 28 [2022-04-05 23:42:45,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864401411] [2022-04-05 23:42:45,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:45,053 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-04-05 23:42:45,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:45,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-04-05 23:42:45,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=510, Unknown=0, NotChecked=0, Total=756 [2022-04-05 23:42:45,053 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) [2022-04-05 23:42:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:45,542 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2022-04-05 23:42:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-04-05 23:42:45,543 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 [2022-04-05 23:42:45,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:45,544 INFO L225 Difference]: With dead ends: 174 [2022-04-05 23:42:45,544 INFO L226 Difference]: Without dead ends: 172 [2022-04-05 23:42:45,544 INFO L912 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 [2022-04-05 23:42:45,545 INFO L913 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, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 23:42:45,545 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 55 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 23:42:45,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-04-05 23:42:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2022-04-05 23:42:45,558 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) [2022-04-05 23:42:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2022-04-05 23:42:45,559 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 158 [2022-04-05 23:42:45,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:45,560 INFO L478 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2022-04-05 23:42:45,560 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 25 states have internal predecessors, (72), 20 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-04-05 23:42:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2022-04-05 23:42:45,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-04-05 23:42:45,561 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:45,561 INFO L499 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:45,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:45,767 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-04-05 23:42:45,767 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:45,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:45,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1395690906, now seen corresponding path program 37 times [2022-04-05 23:42:45,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:45,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700330957] [2022-04-05 23:42:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:45,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 23:42:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 23:42:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 23:42:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 23:42:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 23:42:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:42:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:42:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:42:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:42:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:42:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:42:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:42:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:42:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:42:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:42:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:42:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:42:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:42:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:42:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 23:42:46,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:46,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700330957] [2022-04-05 23:42:46,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700330957] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:46,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020151796] [2022-04-05 23:42:46,376 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:42:46,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:46,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:46,378 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) [2022-04-05 23:42:46,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-04-05 23:42:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:46,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 42 conjunts are in the unsatisfiable core [2022-04-05 23:42:46,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 23:42:46,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 23:42:46,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020151796] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:46,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:46,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 45 [2022-04-05 23:42:46,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548089633] [2022-04-05 23:42:46,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:46,923 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-04-05 23:42:46,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:46,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-04-05 23:42:46,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2022-04-05 23:42:46,924 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) [2022-04-05 23:42:47,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:47,727 INFO L93 Difference]: Finished difference Result 237 states and 258 transitions. [2022-04-05 23:42:47,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-04-05 23:42:47,727 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 [2022-04-05 23:42:47,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:47,728 INFO L225 Difference]: With dead ends: 237 [2022-04-05 23:42:47,728 INFO L226 Difference]: Without dead ends: 169 [2022-04-05 23:42:47,729 INFO L912 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 [2022-04-05 23:42:47,730 INFO L913 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 [2022-04-05 23:42:47,730 INFO L914 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] [2022-04-05 23:42:47,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-04-05 23:42:47,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-04-05 23:42:47,744 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) [2022-04-05 23:42:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2022-04-05 23:42:47,745 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 165 [2022-04-05 23:42:47,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:47,745 INFO L478 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2022-04-05 23:42:47,746 INFO L479 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) [2022-04-05 23:42:47,746 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2022-04-05 23:42:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-04-05 23:42:47,746 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:47,746 INFO L499 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:47,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:47,969 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-04-05 23:42:47,970 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:47,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:47,970 INFO L85 PathProgramCache]: Analyzing trace with hash 552933324, now seen corresponding path program 38 times [2022-04-05 23:42:47,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:47,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644840936] [2022-04-05 23:42:47,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:47,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 23:42:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 23:42:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 23:42:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 23:42:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 23:42:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:42:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:42:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:42:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:42:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:42:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:42:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:42:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:42:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:42:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:42:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:42:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:42:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:42:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:42:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 23:42:48,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:48,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644840936] [2022-04-05 23:42:48,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644840936] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:48,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496357658] [2022-04-05 23:42:48,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:42:48,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:48,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:48,304 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) [2022-04-05 23:42:48,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-04-05 23:42:48,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:42:48,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:48,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 43 conjunts are in the unsatisfiable core [2022-04-05 23:42:48,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 23:42:48,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-04-05 23:42:48,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496357658] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:48,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:48,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 29 [2022-04-05 23:42:48,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778367492] [2022-04-05 23:42:48,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:48,893 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-04-05 23:42:48,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:48,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-04-05 23:42:48,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=544, Unknown=0, NotChecked=0, Total=812 [2022-04-05 23:42:48,894 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) [2022-04-05 23:42:49,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:49,306 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2022-04-05 23:42:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-04-05 23:42:49,307 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 [2022-04-05 23:42:49,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:49,309 INFO L225 Difference]: With dead ends: 182 [2022-04-05 23:42:49,309 INFO L226 Difference]: Without dead ends: 180 [2022-04-05 23:42:49,310 INFO L912 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 [2022-04-05 23:42:49,310 INFO L913 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 [2022-04-05 23:42:49,310 INFO L914 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] [2022-04-05 23:42:49,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-04-05 23:42:49,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2022-04-05 23:42:49,324 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) [2022-04-05 23:42:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2022-04-05 23:42:49,325 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 166 [2022-04-05 23:42:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:49,325 INFO L478 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2022-04-05 23:42:49,325 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 26 states have internal predecessors, (75), 21 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-04-05 23:42:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2022-04-05 23:42:49,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-04-05 23:42:49,326 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:49,326 INFO L499 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:49,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:49,547 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-04-05 23:42:49,548 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:49,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:49,548 INFO L85 PathProgramCache]: Analyzing trace with hash -720104793, now seen corresponding path program 39 times [2022-04-05 23:42:49,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:49,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032593723] [2022-04-05 23:42:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:49,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-05 23:42:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 23:42:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 23:42:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 23:42:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 23:42:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:42:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:42:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:42:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:42:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:42:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:42:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:42:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:42:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:42:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:42:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:42:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:42:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:42:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:42:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:42:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 23:42:50,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:50,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032593723] [2022-04-05 23:42:50,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032593723] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:50,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454836107] [2022-04-05 23:42:50,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:42:50,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:50,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:50,109 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) [2022-04-05 23:42:50,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-04-05 23:42:50,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-04-05 23:42:50,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:50,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 44 conjunts are in the unsatisfiable core [2022-04-05 23:42:50,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 23:42:50,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 23:42:50,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454836107] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:50,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:50,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 47 [2022-04-05 23:42:50,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735227666] [2022-04-05 23:42:50,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:50,693 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-04-05 23:42:50,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:50,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-04-05 23:42:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162 [2022-04-05 23:42:50,693 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) [2022-04-05 23:42:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:51,664 INFO L93 Difference]: Finished difference Result 248 states and 270 transitions. [2022-04-05 23:42:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-04-05 23:42:51,666 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 [2022-04-05 23:42:51,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:51,667 INFO L225 Difference]: With dead ends: 248 [2022-04-05 23:42:51,667 INFO L226 Difference]: Without dead ends: 177 [2022-04-05 23:42:51,669 INFO L912 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 [2022-04-05 23:42:51,669 INFO L913 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 [2022-04-05 23:42:51,669 INFO L914 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] [2022-04-05 23:42:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-04-05 23:42:51,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-04-05 23:42:51,684 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) [2022-04-05 23:42:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2022-04-05 23:42:51,685 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 173 [2022-04-05 23:42:51,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:51,685 INFO L478 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2022-04-05 23:42:51,686 INFO L479 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) [2022-04-05 23:42:51,686 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2022-04-05 23:42:51,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-04-05 23:42:51,686 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:51,687 INFO L499 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:51,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-04-05 23:42:51,899 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-04-05 23:42:51,899 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:51,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2096565747, now seen corresponding path program 40 times [2022-04-05 23:42:51,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:51,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88283762] [2022-04-05 23:42:51,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:51,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 23:42:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 23:42:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 23:42:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 23:42:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:42:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:42:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:42:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:42:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:42:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:42:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:42:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:42:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:42:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:42:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:42:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:42:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:42:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:42:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:42:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:42:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 23:42:52,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:52,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88283762] [2022-04-05 23:42:52,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88283762] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:52,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486143138] [2022-04-05 23:42:52,223 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:42:52,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:52,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:52,228 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) [2022-04-05 23:42:52,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-04-05 23:42:52,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:42:52,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:52,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 45 conjunts are in the unsatisfiable core [2022-04-05 23:42:52,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 23:42:52,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-04-05 23:42:52,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486143138] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:52,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:52,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 30 [2022-04-05 23:42:52,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092474388] [2022-04-05 23:42:52,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:52,835 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-04-05 23:42:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-04-05 23:42:52,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=579, Unknown=0, NotChecked=0, Total=870 [2022-04-05 23:42:52,835 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) [2022-04-05 23:42:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:53,303 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2022-04-05 23:42:53,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-04-05 23:42:53,304 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 [2022-04-05 23:42:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:53,305 INFO L225 Difference]: With dead ends: 190 [2022-04-05 23:42:53,305 INFO L226 Difference]: Without dead ends: 188 [2022-04-05 23:42:53,306 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 406 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2022-04-05 23:42:53,306 INFO L913 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, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 23:42:53,306 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 60 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 23:42:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-04-05 23:42:53,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2022-04-05 23:42:53,321 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) [2022-04-05 23:42:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2022-04-05 23:42:53,322 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 174 [2022-04-05 23:42:53,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:53,322 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2022-04-05 23:42:53,322 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 27 states have internal predecessors, (78), 22 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-05 23:42:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2022-04-05 23:42:53,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-04-05 23:42:53,323 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:53,323 INFO L499 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:53,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-04-05 23:42:53,546 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:53,546 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:53,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:53,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1476174522, now seen corresponding path program 41 times [2022-04-05 23:42:53,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:53,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189187495] [2022-04-05 23:42:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:53,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 23:42:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 23:42:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 23:42:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 23:42:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:42:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:42:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:42:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:42:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:42:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:42:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:42:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:42:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:42:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:42:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:42:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:42:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:42:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:42:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:42:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:42:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:42:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-04-05 23:42:54,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:54,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189187495] [2022-04-05 23:42:54,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189187495] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:54,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903864155] [2022-04-05 23:42:54,181 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:42:54,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:54,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:54,182 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) [2022-04-05 23:42:54,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-04-05 23:42:54,256 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-04-05 23:42:54,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:54,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 46 conjunts are in the unsatisfiable core [2022-04-05 23:42:54,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-04-05 23:42:54,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-04-05 23:42:54,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903864155] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:54,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:54,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 49 [2022-04-05 23:42:54,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777197107] [2022-04-05 23:42:54,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:54,786 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-04-05 23:42:54,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:54,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-04-05 23:42:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1773, Unknown=0, NotChecked=0, Total=2352 [2022-04-05 23:42:54,787 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) [2022-04-05 23:42:55,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:55,766 INFO L93 Difference]: Finished difference Result 259 states and 282 transitions. [2022-04-05 23:42:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-04-05 23:42:55,766 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 [2022-04-05 23:42:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:55,767 INFO L225 Difference]: With dead ends: 259 [2022-04-05 23:42:55,768 INFO L226 Difference]: Without dead ends: 185 [2022-04-05 23:42:55,769 INFO L912 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 [2022-04-05 23:42:55,769 INFO L913 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 [2022-04-05 23:42:55,770 INFO L914 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] [2022-04-05 23:42:55,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-04-05 23:42:55,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-04-05 23:42:55,784 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) [2022-04-05 23:42:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2022-04-05 23:42:55,785 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 181 [2022-04-05 23:42:55,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:55,785 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2022-04-05 23:42:55,785 INFO L479 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) [2022-04-05 23:42:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2022-04-05 23:42:55,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-04-05 23:42:55,786 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:55,786 INFO L499 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:55,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-04-05 23:42:56,010 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:56,010 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:56,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:56,010 INFO L85 PathProgramCache]: Analyzing trace with hash -772966740, now seen corresponding path program 42 times [2022-04-05 23:42:56,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:56,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268066105] [2022-04-05 23:42:56,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:56,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-05 23:42:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 23:42:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 23:42:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 23:42:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:42:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:42:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:42:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:42:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:42:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:42:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:42:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:42:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:42:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:42:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:42:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:42:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:42:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:42:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:42:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:42:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:42:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-04-05 23:42:56,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268066105] [2022-04-05 23:42:56,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268066105] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487951071] [2022-04-05 23:42:56,380 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:42:56,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:56,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:56,381 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) [2022-04-05 23:42:56,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-04-05 23:42:56,486 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-04-05 23:42:56,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:42:56,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 47 conjunts are in the unsatisfiable core [2022-04-05 23:42:56,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-04-05 23:42:56,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-04-05 23:42:57,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487951071] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:57,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:57,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 31 [2022-04-05 23:42:57,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541454846] [2022-04-05 23:42:57,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:57,175 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-04-05 23:42:57,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:57,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-04-05 23:42:57,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2022-04-05 23:42:57,175 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) [2022-04-05 23:42:57,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:42:57,620 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2022-04-05 23:42:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-05 23:42:57,621 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 [2022-04-05 23:42:57,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:42:57,622 INFO L225 Difference]: With dead ends: 198 [2022-04-05 23:42:57,622 INFO L226 Difference]: Without dead ends: 196 [2022-04-05 23:42:57,623 INFO L912 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 [2022-04-05 23:42:57,623 INFO L913 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 [2022-04-05 23:42:57,623 INFO L914 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] [2022-04-05 23:42:57,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-04-05 23:42:57,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 192. [2022-04-05 23:42:57,640 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) [2022-04-05 23:42:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2022-04-05 23:42:57,640 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 182 [2022-04-05 23:42:57,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:42:57,641 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2022-04-05 23:42:57,641 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 23 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-05 23:42:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2022-04-05 23:42:57,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-04-05 23:42:57,642 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:42:57,642 INFO L499 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:42:57,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-04-05 23:42:57,843 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-04-05 23:42:57,843 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:42:57,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:42:57,844 INFO L85 PathProgramCache]: Analyzing trace with hash 815609799, now seen corresponding path program 43 times [2022-04-05 23:42:57,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:42:57,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791888907] [2022-04-05 23:42:57,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:42:57,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:42:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:42:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-04-05 23:42:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 23:42:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 23:42:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 23:42:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:42:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:42:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:42:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:42:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:42:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:42:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:42:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:42:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:42:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:42:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:42:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:42:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:42:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:42:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:42:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:42:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:42:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:42:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 23:42:58,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:42:58,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791888907] [2022-04-05 23:42:58,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791888907] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:42:58,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220566976] [2022-04-05 23:42:58,585 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:42:58,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:42:58,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:42:58,587 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) [2022-04-05 23:42:58,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-04-05 23:42:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:42:58,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 48 conjunts are in the unsatisfiable core [2022-04-05 23:42:58,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:42:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 23:42:58,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:42:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 23:42:59,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220566976] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:42:59,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:42:59,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 51 [2022-04-05 23:42:59,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374680868] [2022-04-05 23:42:59,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:42:59,283 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-04-05 23:42:59,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:42:59,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-04-05 23:42:59,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=1922, Unknown=0, NotChecked=0, Total=2550 [2022-04-05 23:42:59,285 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) [2022-04-05 23:43:00,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:00,261 INFO L93 Difference]: Finished difference Result 270 states and 294 transitions. [2022-04-05 23:43:00,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-04-05 23:43:00,261 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 [2022-04-05 23:43:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:00,262 INFO L225 Difference]: With dead ends: 270 [2022-04-05 23:43:00,262 INFO L226 Difference]: Without dead ends: 193 [2022-04-05 23:43:00,264 INFO L912 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 [2022-04-05 23:43:00,264 INFO L913 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 [2022-04-05 23:43:00,264 INFO L914 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] [2022-04-05 23:43:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-04-05 23:43:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-04-05 23:43:00,280 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) [2022-04-05 23:43:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2022-04-05 23:43:00,281 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 189 [2022-04-05 23:43:00,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:00,281 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2022-04-05 23:43:00,281 INFO L479 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) [2022-04-05 23:43:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2022-04-05 23:43:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-04-05 23:43:00,282 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:00,282 INFO L499 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:00,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-04-05 23:43:00,487 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-04-05 23:43:00,487 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:00,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:00,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1834841299, now seen corresponding path program 44 times [2022-04-05 23:43:00,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:00,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929085758] [2022-04-05 23:43:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:00,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 23:43:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 23:43:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 23:43:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 23:43:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:43:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:43:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:43:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:43:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:43:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:43:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:43:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:43:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:43:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:43:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:43:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:43:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:43:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:43:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:43:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:43:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:43:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:43:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 23:43:00,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:00,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929085758] [2022-04-05 23:43:00,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929085758] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:00,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748832207] [2022-04-05 23:43:00,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:43:00,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:00,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:00,835 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) [2022-04-05 23:43:00,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-04-05 23:43:00,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:43:00,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:00,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 49 conjunts are in the unsatisfiable core [2022-04-05 23:43:00,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 23:43:01,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-04-05 23:43:01,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748832207] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:01,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:01,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 32 [2022-04-05 23:43:01,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59269923] [2022-04-05 23:43:01,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:01,503 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-04-05 23:43:01,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:01,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-04-05 23:43:01,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=652, Unknown=0, NotChecked=0, Total=992 [2022-04-05 23:43:01,504 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) [2022-04-05 23:43:01,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:01,973 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2022-04-05 23:43:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-04-05 23:43:01,974 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 [2022-04-05 23:43:01,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:01,974 INFO L225 Difference]: With dead ends: 206 [2022-04-05 23:43:01,975 INFO L226 Difference]: Without dead ends: 204 [2022-04-05 23:43:01,975 INFO L912 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 [2022-04-05 23:43:01,976 INFO L913 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 [2022-04-05 23:43:01,976 INFO L914 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] [2022-04-05 23:43:01,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-04-05 23:43:01,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2022-04-05 23:43:01,993 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) [2022-04-05 23:43:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2022-04-05 23:43:01,994 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 190 [2022-04-05 23:43:01,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:01,994 INFO L478 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2022-04-05 23:43:01,994 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.625) internal successors, (84), 29 states have internal predecessors, (84), 24 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 23:43:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2022-04-05 23:43:01,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-04-05 23:43:01,995 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:01,995 INFO L499 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:02,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-04-05 23:43:02,203 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-04-05 23:43:02,203 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash 440483878, now seen corresponding path program 45 times [2022-04-05 23:43:02,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:02,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855327514] [2022-04-05 23:43:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:02,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-05 23:43:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 23:43:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 23:43:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 23:43:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:43:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:43:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:43:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:43:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:43:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:43:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:43:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:43:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:43:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:43:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:43:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:43:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:43:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:43:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:43:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:43:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:43:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:43:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:43:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 23:43:02,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:02,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855327514] [2022-04-05 23:43:02,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855327514] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:02,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118238649] [2022-04-05 23:43:02,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:43:02,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:02,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:02,930 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) [2022-04-05 23:43:02,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-04-05 23:43:03,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-04-05 23:43:03,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:03,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 50 conjunts are in the unsatisfiable core [2022-04-05 23:43:03,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 23:43:03,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 23:43:03,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118238649] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:03,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:03,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 53 [2022-04-05 23:43:03,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761355390] [2022-04-05 23:43:03,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:03,579 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-04-05 23:43:03,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:03,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-04-05 23:43:03,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=2077, Unknown=0, NotChecked=0, Total=2756 [2022-04-05 23:43:03,580 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) [2022-04-05 23:43:04,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:04,600 INFO L93 Difference]: Finished difference Result 281 states and 306 transitions. [2022-04-05 23:43:04,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-04-05 23:43:04,601 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 [2022-04-05 23:43:04,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:04,602 INFO L225 Difference]: With dead ends: 281 [2022-04-05 23:43:04,602 INFO L226 Difference]: Without dead ends: 201 [2022-04-05 23:43:04,603 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 440 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2439 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2078, Invalid=8224, Unknown=0, NotChecked=0, Total=10302 [2022-04-05 23:43:04,604 INFO L913 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 [2022-04-05 23:43:04,604 INFO L914 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] [2022-04-05 23:43:04,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-04-05 23:43:04,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-04-05 23:43:04,621 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) [2022-04-05 23:43:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2022-04-05 23:43:04,622 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 197 [2022-04-05 23:43:04,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:04,622 INFO L478 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2022-04-05 23:43:04,622 INFO L479 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) [2022-04-05 23:43:04,622 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2022-04-05 23:43:04,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-04-05 23:43:04,623 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:04,623 INFO L499 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:04,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-04-05 23:43:04,831 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:04,831 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:04,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:04,832 INFO L85 PathProgramCache]: Analyzing trace with hash -360198772, now seen corresponding path program 46 times [2022-04-05 23:43:04,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:04,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362987881] [2022-04-05 23:43:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:04,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 23:43:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 23:43:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 23:43:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 23:43:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:43:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:43:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:43:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:43:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:43:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:43:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:43:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:43:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:43:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:43:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:43:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:43:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:43:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:43:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:43:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:43:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:43:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:43:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:43:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 23:43:05,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:05,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362987881] [2022-04-05 23:43:05,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362987881] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:05,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394721642] [2022-04-05 23:43:05,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:43:05,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:05,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:05,247 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) [2022-04-05 23:43:05,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-04-05 23:43:05,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:43:05,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:05,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 51 conjunts are in the unsatisfiable core [2022-04-05 23:43:05,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 23:43:05,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-04-05 23:43:05,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394721642] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:05,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:05,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 33 [2022-04-05 23:43:05,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504140085] [2022-04-05 23:43:05,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:05,923 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-04-05 23:43:05,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:05,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-04-05 23:43:05,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2022-04-05 23:43:05,924 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) [2022-04-05 23:43:06,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:06,416 INFO L93 Difference]: Finished difference Result 214 states and 216 transitions. [2022-04-05 23:43:06,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-04-05 23:43:06,417 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 [2022-04-05 23:43:06,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:06,417 INFO L225 Difference]: With dead ends: 214 [2022-04-05 23:43:06,418 INFO L226 Difference]: Without dead ends: 212 [2022-04-05 23:43:06,418 INFO L912 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 [2022-04-05 23:43:06,419 INFO L913 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 [2022-04-05 23:43:06,419 INFO L914 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] [2022-04-05 23:43:06,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-04-05 23:43:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 208. [2022-04-05 23:43:06,442 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) [2022-04-05 23:43:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2022-04-05 23:43:06,442 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 198 [2022-04-05 23:43:06,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:06,443 INFO L478 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2022-04-05 23:43:06,443 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 30 states have internal predecessors, (87), 25 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-05 23:43:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2022-04-05 23:43:06,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-04-05 23:43:06,444 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:06,444 INFO L499 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:06,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-04-05 23:43:06,659 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-04-05 23:43:06,659 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:06,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:06,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1596103449, now seen corresponding path program 47 times [2022-04-05 23:43:06,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:06,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209625982] [2022-04-05 23:43:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:06,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 23:43:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 23:43:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 23:43:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 23:43:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:43:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:43:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:43:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:43:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:43:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:43:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:43:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:43:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:43:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:43:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:43:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:43:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:43:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:43:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:43:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:43:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:43:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:43:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:43:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:43:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 23:43:07,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:07,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209625982] [2022-04-05 23:43:07,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209625982] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:07,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712674213] [2022-04-05 23:43:07,396 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:43:07,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:07,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:07,397 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) [2022-04-05 23:43:07,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-04-05 23:43:07,482 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2022-04-05 23:43:07,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:07,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 52 conjunts are in the unsatisfiable core [2022-04-05 23:43:07,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 23:43:07,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 23:43:08,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712674213] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:08,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:08,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 55 [2022-04-05 23:43:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125048312] [2022-04-05 23:43:08,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:08,072 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-04-05 23:43:08,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-04-05 23:43:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=2238, Unknown=0, NotChecked=0, Total=2970 [2022-04-05 23:43:08,073 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) [2022-04-05 23:43:09,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:09,190 INFO L93 Difference]: Finished difference Result 292 states and 318 transitions. [2022-04-05 23:43:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-04-05 23:43:09,190 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 [2022-04-05 23:43:09,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:09,191 INFO L225 Difference]: With dead ends: 292 [2022-04-05 23:43:09,191 INFO L226 Difference]: Without dead ends: 209 [2022-04-05 23:43:09,193 INFO L912 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 [2022-04-05 23:43:09,193 INFO L913 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 [2022-04-05 23:43:09,193 INFO L914 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] [2022-04-05 23:43:09,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-04-05 23:43:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-04-05 23:43:09,213 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) [2022-04-05 23:43:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2022-04-05 23:43:09,213 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 205 [2022-04-05 23:43:09,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:09,214 INFO L478 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2022-04-05 23:43:09,214 INFO L479 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) [2022-04-05 23:43:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2022-04-05 23:43:09,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-04-05 23:43:09,215 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:09,215 INFO L499 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:09,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:09,439 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-04-05 23:43:09,439 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:09,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1886704563, now seen corresponding path program 48 times [2022-04-05 23:43:09,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:09,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441021367] [2022-04-05 23:43:09,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:09,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 23:43:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 23:43:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 23:43:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 23:43:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:43:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:43:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:43:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:43:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:43:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:43:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:43:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:43:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:43:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:43:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:43:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:43:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:43:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:43:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:43:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:43:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:43:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:43:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:43:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:43:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 23:43:09,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:09,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441021367] [2022-04-05 23:43:09,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441021367] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:09,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725481740] [2022-04-05 23:43:09,816 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:43:09,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:09,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:09,817 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) [2022-04-05 23:43:09,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-04-05 23:43:09,911 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2022-04-05 23:43:09,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:09,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 53 conjunts are in the unsatisfiable core [2022-04-05 23:43:09,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 23:43:10,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:10,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-04-05 23:43:10,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725481740] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:10,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:10,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 34 [2022-04-05 23:43:10,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691470826] [2022-04-05 23:43:10,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:10,598 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-04-05 23:43:10,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:10,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-04-05 23:43:10,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=729, Unknown=0, NotChecked=0, Total=1122 [2022-04-05 23:43:10,598 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) [2022-04-05 23:43:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:11,149 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2022-04-05 23:43:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-04-05 23:43:11,149 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 [2022-04-05 23:43:11,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:11,152 INFO L225 Difference]: With dead ends: 222 [2022-04-05 23:43:11,152 INFO L226 Difference]: Without dead ends: 220 [2022-04-05 23:43:11,153 INFO L912 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 [2022-04-05 23:43:11,153 INFO L913 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 [2022-04-05 23:43:11,153 INFO L914 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] [2022-04-05 23:43:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-04-05 23:43:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2022-04-05 23:43:11,168 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) [2022-04-05 23:43:11,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2022-04-05 23:43:11,169 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 206 [2022-04-05 23:43:11,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:11,169 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2022-04-05 23:43:11,169 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 31 states have internal predecessors, (90), 26 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-05 23:43:11,170 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2022-04-05 23:43:11,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-04-05 23:43:11,170 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:11,171 INFO L499 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:11,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:11,383 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-04-05 23:43:11,383 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:11,383 INFO L85 PathProgramCache]: Analyzing trace with hash -508093690, now seen corresponding path program 49 times [2022-04-05 23:43:11,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:11,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215965178] [2022-04-05 23:43:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:11,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-05 23:43:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 23:43:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 23:43:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 23:43:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:43:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:43:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:43:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:43:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:43:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:43:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:43:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:43:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:43:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:43:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:43:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:43:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:43:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:43:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:43:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:43:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:43:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:43:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:43:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:43:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:43:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 23:43:12,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:12,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215965178] [2022-04-05 23:43:12,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215965178] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:12,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402881568] [2022-04-05 23:43:12,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:43:12,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:12,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:12,203 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) [2022-04-05 23:43:12,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-04-05 23:43:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:12,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 54 conjunts are in the unsatisfiable core [2022-04-05 23:43:12,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:12,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 23:43:12,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 23:43:12,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402881568] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:12,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:12,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 57 [2022-04-05 23:43:12,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322953323] [2022-04-05 23:43:12,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:12,974 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-04-05 23:43:12,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-04-05 23:43:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2022-04-05 23:43:12,975 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) [2022-04-05 23:43:14,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:14,172 INFO L93 Difference]: Finished difference Result 303 states and 330 transitions. [2022-04-05 23:43:14,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-04-05 23:43:14,172 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 [2022-04-05 23:43:14,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:14,173 INFO L225 Difference]: With dead ends: 303 [2022-04-05 23:43:14,173 INFO L226 Difference]: Without dead ends: 217 [2022-04-05 23:43:14,175 INFO L912 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 [2022-04-05 23:43:14,177 INFO L913 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, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 23:43:14,177 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 83 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 23:43:14,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-04-05 23:43:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-04-05 23:43:14,199 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) [2022-04-05 23:43:14,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2022-04-05 23:43:14,200 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 213 [2022-04-05 23:43:14,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:14,200 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2022-04-05 23:43:14,200 INFO L479 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) [2022-04-05 23:43:14,201 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2022-04-05 23:43:14,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-04-05 23:43:14,202 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:14,202 INFO L499 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:14,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:14,425 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-04-05 23:43:14,425 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:14,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash 418520172, now seen corresponding path program 50 times [2022-04-05 23:43:14,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:14,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786506502] [2022-04-05 23:43:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:14,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 23:43:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 23:43:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 23:43:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 23:43:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:43:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:43:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:43:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:43:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:43:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:43:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:43:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:43:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:43:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:43:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:43:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:43:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:43:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:43:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:43:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:43:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:43:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:43:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:43:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:43:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:43:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 23:43:14,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:14,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786506502] [2022-04-05 23:43:14,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786506502] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:14,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907965089] [2022-04-05 23:43:14,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:43:14,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:14,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:14,815 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) [2022-04-05 23:43:14,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-04-05 23:43:14,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:43:14,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:14,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 55 conjunts are in the unsatisfiable core [2022-04-05 23:43:14,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 23:43:15,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-04-05 23:43:15,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907965089] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:15,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:15,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 35 [2022-04-05 23:43:15,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483553781] [2022-04-05 23:43:15,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:15,545 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-04-05 23:43:15,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:15,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-04-05 23:43:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=769, Unknown=0, NotChecked=0, Total=1190 [2022-04-05 23:43:15,546 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) [2022-04-05 23:43:16,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:16,127 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2022-04-05 23:43:16,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-04-05 23:43:16,127 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 [2022-04-05 23:43:16,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:16,129 INFO L225 Difference]: With dead ends: 230 [2022-04-05 23:43:16,129 INFO L226 Difference]: Without dead ends: 228 [2022-04-05 23:43:16,129 INFO L912 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 [2022-04-05 23:43:16,131 INFO L913 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, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 23:43:16,131 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 50 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 23:43:16,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-04-05 23:43:16,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2022-04-05 23:43:16,152 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) [2022-04-05 23:43:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2022-04-05 23:43:16,152 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 214 [2022-04-05 23:43:16,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:16,152 INFO L478 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2022-04-05 23:43:16,152 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 32 states have internal predecessors, (93), 27 states have call successors, (30), 4 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-04-05 23:43:16,153 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2022-04-05 23:43:16,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-04-05 23:43:16,153 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:16,153 INFO L499 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:16,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:16,354 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:16,354 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:16,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:16,354 INFO L85 PathProgramCache]: Analyzing trace with hash -941188601, now seen corresponding path program 51 times [2022-04-05 23:43:16,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:16,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997269080] [2022-04-05 23:43:16,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:16,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-05 23:43:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 23:43:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 23:43:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 23:43:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:43:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:43:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:43:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:43:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:43:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:43:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:43:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:43:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:43:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:43:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:43:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:43:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:43:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:43:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:43:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:43:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:43:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:43:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:43:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:43:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:43:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:43:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-04-05 23:43:17,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:17,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997269080] [2022-04-05 23:43:17,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997269080] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:17,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317957017] [2022-04-05 23:43:17,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:43:17,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:17,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:17,182 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) [2022-04-05 23:43:17,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-04-05 23:43:17,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2022-04-05 23:43:17,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:17,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 56 conjunts are in the unsatisfiable core [2022-04-05 23:43:17,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-04-05 23:43:17,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-04-05 23:43:18,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317957017] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:18,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:18,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 59 [2022-04-05 23:43:18,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497536221] [2022-04-05 23:43:18,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:18,003 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-04-05 23:43:18,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:18,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-04-05 23:43:18,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=844, Invalid=2578, Unknown=0, NotChecked=0, Total=3422 [2022-04-05 23:43:18,004 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) [2022-04-05 23:43:19,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:19,292 INFO L93 Difference]: Finished difference Result 314 states and 342 transitions. [2022-04-05 23:43:19,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-04-05 23:43:19,293 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 [2022-04-05 23:43:19,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:19,293 INFO L225 Difference]: With dead ends: 314 [2022-04-05 23:43:19,294 INFO L226 Difference]: Without dead ends: 225 [2022-04-05 23:43:19,294 INFO L912 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 [2022-04-05 23:43:19,295 INFO L913 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 [2022-04-05 23:43:19,295 INFO L914 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] [2022-04-05 23:43:19,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-04-05 23:43:19,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-04-05 23:43:19,313 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) [2022-04-05 23:43:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2022-04-05 23:43:19,313 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 221 [2022-04-05 23:43:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:19,314 INFO L478 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2022-04-05 23:43:19,314 INFO L479 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) [2022-04-05 23:43:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2022-04-05 23:43:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-04-05 23:43:19,315 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:19,315 INFO L499 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:19,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:19,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-04-05 23:43:19,524 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash -338373267, now seen corresponding path program 52 times [2022-04-05 23:43:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:19,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550143265] [2022-04-05 23:43:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:19,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 23:43:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 23:43:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 23:43:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 23:43:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:43:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:43:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:43:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:43:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:43:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:43:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:43:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:43:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:43:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:43:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:43:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:43:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:43:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:43:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:43:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:43:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:43:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:43:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:43:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:43:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:43:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:43:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-04-05 23:43:19,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:19,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550143265] [2022-04-05 23:43:19,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550143265] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:19,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221491658] [2022-04-05 23:43:19,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:43:19,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:19,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:19,932 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) [2022-04-05 23:43:19,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-04-05 23:43:20,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:43:20,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:20,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 57 conjunts are in the unsatisfiable core [2022-04-05 23:43:20,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-04-05 23:43:20,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-04-05 23:43:20,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221491658] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:20,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:20,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 36 [2022-04-05 23:43:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718343175] [2022-04-05 23:43:20,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:20,702 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-04-05 23:43:20,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-04-05 23:43:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=810, Unknown=0, NotChecked=0, Total=1260 [2022-04-05 23:43:20,703 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) [2022-04-05 23:43:21,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:21,290 INFO L93 Difference]: Finished difference Result 238 states and 240 transitions. [2022-04-05 23:43:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-04-05 23:43:21,291 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 [2022-04-05 23:43:21,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:21,292 INFO L225 Difference]: With dead ends: 238 [2022-04-05 23:43:21,292 INFO L226 Difference]: Without dead ends: 236 [2022-04-05 23:43:21,292 INFO L912 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 [2022-04-05 23:43:21,293 INFO L913 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 [2022-04-05 23:43:21,293 INFO L914 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] [2022-04-05 23:43:21,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-04-05 23:43:21,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2022-04-05 23:43:21,315 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) [2022-04-05 23:43:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2022-04-05 23:43:21,316 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 222 [2022-04-05 23:43:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:21,316 INFO L478 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2022-04-05 23:43:21,317 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6666666666666665) internal successors, (96), 33 states have internal predecessors, (96), 28 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-04-05 23:43:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2022-04-05 23:43:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-04-05 23:43:21,318 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:21,318 INFO L499 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:21,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-04-05 23:43:21,531 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:21,531 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:21,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:21,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1947397606, now seen corresponding path program 53 times [2022-04-05 23:43:21,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:21,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899674850] [2022-04-05 23:43:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:21,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-05 23:43:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 23:43:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 23:43:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 23:43:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:43:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:43:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:43:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:43:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:43:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:43:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:43:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:43:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:43:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:43:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:43:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:43:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:43:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:43:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:43:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:43:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:43:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:43:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:43:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:43:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:43:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:43:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:43:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 23:43:22,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:22,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899674850] [2022-04-05 23:43:22,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899674850] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:22,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447142646] [2022-04-05 23:43:22,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:43:22,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:22,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:22,417 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) [2022-04-05 23:43:22,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-04-05 23:43:22,514 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2022-04-05 23:43:22,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:22,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 58 conjunts are in the unsatisfiable core [2022-04-05 23:43:22,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:22,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 23:43:22,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 23:43:23,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447142646] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:23,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:23,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 61 [2022-04-05 23:43:23,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320668510] [2022-04-05 23:43:23,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:23,230 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-04-05 23:43:23,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:23,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-04-05 23:43:23,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=2757, Unknown=0, NotChecked=0, Total=3660 [2022-04-05 23:43:23,231 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) [2022-04-05 23:43:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:24,554 INFO L93 Difference]: Finished difference Result 325 states and 354 transitions. [2022-04-05 23:43:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-04-05 23:43:24,555 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 [2022-04-05 23:43:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:24,556 INFO L225 Difference]: With dead ends: 325 [2022-04-05 23:43:24,556 INFO L226 Difference]: Without dead ends: 233 [2022-04-05 23:43:24,558 INFO L912 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 [2022-04-05 23:43:24,559 INFO L913 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 [2022-04-05 23:43:24,559 INFO L914 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] [2022-04-05 23:43:24,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-04-05 23:43:24,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2022-04-05 23:43:24,601 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) [2022-04-05 23:43:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2022-04-05 23:43:24,601 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 229 [2022-04-05 23:43:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:24,602 INFO L478 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2022-04-05 23:43:24,602 INFO L479 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) [2022-04-05 23:43:24,602 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2022-04-05 23:43:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-04-05 23:43:24,603 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:24,603 INFO L499 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:24,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:24,819 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:24,820 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:24,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:24,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1562746036, now seen corresponding path program 54 times [2022-04-05 23:43:24,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:24,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157135276] [2022-04-05 23:43:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:24,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 23:43:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 23:43:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 23:43:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:43:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:43:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:43:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:43:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:43:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:43:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:43:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:43:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:43:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:43:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:43:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:43:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:43:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:43:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:43:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:43:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:43:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:43:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:43:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:43:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:43:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:43:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:43:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:43:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 23:43:25,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:25,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157135276] [2022-04-05 23:43:25,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157135276] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:25,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050285602] [2022-04-05 23:43:25,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:43:25,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:25,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:25,285 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) [2022-04-05 23:43:25,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-04-05 23:43:25,384 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2022-04-05 23:43:25,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:25,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 59 conjunts are in the unsatisfiable core [2022-04-05 23:43:25,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 23:43:25,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-04-05 23:43:26,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050285602] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:26,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:26,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 37 [2022-04-05 23:43:26,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305085699] [2022-04-05 23:43:26,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:26,057 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-04-05 23:43:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:26,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-04-05 23:43:26,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2022-04-05 23:43:26,058 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) [2022-04-05 23:43:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:26,663 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2022-04-05 23:43:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-04-05 23:43:26,664 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 [2022-04-05 23:43:26,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:26,665 INFO L225 Difference]: With dead ends: 246 [2022-04-05 23:43:26,665 INFO L226 Difference]: Without dead ends: 244 [2022-04-05 23:43:26,665 INFO L912 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 [2022-04-05 23:43:26,666 INFO L913 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 [2022-04-05 23:43:26,666 INFO L914 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] [2022-04-05 23:43:26,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-04-05 23:43:26,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2022-04-05 23:43:26,690 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) [2022-04-05 23:43:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2022-04-05 23:43:26,690 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 230 [2022-04-05 23:43:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:26,691 INFO L478 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2022-04-05 23:43:26,691 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 34 states have internal predecessors, (99), 29 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-04-05 23:43:26,691 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2022-04-05 23:43:26,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-04-05 23:43:26,692 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:26,692 INFO L499 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:26,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:26,906 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:26,906 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:26,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:26,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1078646567, now seen corresponding path program 55 times [2022-04-05 23:43:26,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:26,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967588227] [2022-04-05 23:43:26,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:26,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-05 23:43:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 23:43:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 23:43:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:43:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:43:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:43:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:43:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:43:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:43:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:43:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:43:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:43:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:43:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:43:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:43:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:43:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:43:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:43:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:43:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:43:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:43:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:43:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:43:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:43:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:43:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:43:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:43:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:43:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 23:43:27,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:27,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967588227] [2022-04-05 23:43:27,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967588227] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:27,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651661354] [2022-04-05 23:43:27,890 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:43:27,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:27,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:27,891 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) [2022-04-05 23:43:27,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-04-05 23:43:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:27,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 60 conjunts are in the unsatisfiable core [2022-04-05 23:43:27,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 23:43:28,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 23:43:28,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651661354] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:28,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:28,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 63 [2022-04-05 23:43:28,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465961188] [2022-04-05 23:43:28,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:28,629 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-04-05 23:43:28,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:28,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-04-05 23:43:28,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=2942, Unknown=0, NotChecked=0, Total=3906 [2022-04-05 23:43:28,630 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) [2022-04-05 23:43:30,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:30,017 INFO L93 Difference]: Finished difference Result 336 states and 366 transitions. [2022-04-05 23:43:30,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-04-05 23:43:30,017 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 [2022-04-05 23:43:30,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:30,018 INFO L225 Difference]: With dead ends: 336 [2022-04-05 23:43:30,018 INFO L226 Difference]: Without dead ends: 241 [2022-04-05 23:43:30,020 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 530 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3529 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2943, Invalid=11819, Unknown=0, NotChecked=0, Total=14762 [2022-04-05 23:43:30,021 INFO L913 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 [2022-04-05 23:43:30,021 INFO L914 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] [2022-04-05 23:43:30,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-04-05 23:43:30,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-04-05 23:43:30,054 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) [2022-04-05 23:43:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2022-04-05 23:43:30,055 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 237 [2022-04-05 23:43:30,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:30,055 INFO L478 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2022-04-05 23:43:30,056 INFO L479 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) [2022-04-05 23:43:30,056 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2022-04-05 23:43:30,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-04-05 23:43:30,057 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:30,057 INFO L499 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:30,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:30,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:30,271 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash 303138445, now seen corresponding path program 56 times [2022-04-05 23:43:30,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:30,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921898640] [2022-04-05 23:43:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:30,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 23:43:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 23:43:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 23:43:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:43:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:43:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:43:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:43:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:43:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:43:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:43:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:43:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:43:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:43:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:43:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:43:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:43:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:43:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:43:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:43:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:43:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:43:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:43:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:43:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:43:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:43:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:43:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:43:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:43:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 23:43:30,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:30,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921898640] [2022-04-05 23:43:30,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921898640] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:30,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024745527] [2022-04-05 23:43:30,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:43:30,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:30,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:30,828 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) [2022-04-05 23:43:30,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-04-05 23:43:30,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:43:30,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:30,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 61 conjunts are in the unsatisfiable core [2022-04-05 23:43:30,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 23:43:31,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-04-05 23:43:31,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024745527] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:31,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:31,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 38 [2022-04-05 23:43:31,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827838976] [2022-04-05 23:43:31,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:31,676 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-04-05 23:43:31,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:31,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-04-05 23:43:31,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=895, Unknown=0, NotChecked=0, Total=1406 [2022-04-05 23:43:31,676 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) [2022-04-05 23:43:32,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:32,329 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2022-04-05 23:43:32,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-04-05 23:43:32,330 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 [2022-04-05 23:43:32,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:32,331 INFO L225 Difference]: With dead ends: 254 [2022-04-05 23:43:32,331 INFO L226 Difference]: Without dead ends: 252 [2022-04-05 23:43:32,332 INFO L912 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 [2022-04-05 23:43:32,332 INFO L913 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 [2022-04-05 23:43:32,332 INFO L914 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] [2022-04-05 23:43:32,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-04-05 23:43:32,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 248. [2022-04-05 23:43:32,355 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) [2022-04-05 23:43:32,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2022-04-05 23:43:32,356 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 238 [2022-04-05 23:43:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:32,356 INFO L478 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2022-04-05 23:43:32,356 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6842105263157894) internal successors, (102), 35 states have internal predecessors, (102), 30 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-04-05 23:43:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2022-04-05 23:43:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-04-05 23:43:32,357 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:32,357 INFO L499 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:32,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:32,563 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-04-05 23:43:32,564 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:32,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1098729274, now seen corresponding path program 57 times [2022-04-05 23:43:32,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:32,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652507166] [2022-04-05 23:43:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:32,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-04-05 23:43:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 23:43:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 23:43:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:43:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:43:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:43:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:43:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:43:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:43:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:43:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:43:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:43:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:43:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:43:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:43:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:43:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:43:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:43:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:43:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:43:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:43:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:43:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:43:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:43:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:43:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:43:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:43:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:43:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:43:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 23:43:33,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:33,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652507166] [2022-04-05 23:43:33,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652507166] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:33,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663971264] [2022-04-05 23:43:33,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:43:33,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:33,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:33,647 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) [2022-04-05 23:43:33,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-04-05 23:43:33,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2022-04-05 23:43:33,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:33,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 62 conjunts are in the unsatisfiable core [2022-04-05 23:43:33,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 23:43:34,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 23:43:34,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663971264] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:34,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:34,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 65 [2022-04-05 23:43:34,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748729986] [2022-04-05 23:43:34,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:34,480 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-04-05 23:43:34,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:34,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-04-05 23:43:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2022-04-05 23:43:34,480 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) [2022-04-05 23:43:35,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:35,957 INFO L93 Difference]: Finished difference Result 347 states and 378 transitions. [2022-04-05 23:43:35,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-04-05 23:43:35,957 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 [2022-04-05 23:43:35,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:35,958 INFO L225 Difference]: With dead ends: 347 [2022-04-05 23:43:35,958 INFO L226 Difference]: Without dead ends: 249 [2022-04-05 23:43:35,959 INFO L912 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 [2022-04-05 23:43:35,959 INFO L913 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 [2022-04-05 23:43:35,959 INFO L914 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] [2022-04-05 23:43:35,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-04-05 23:43:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-04-05 23:43:35,985 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) [2022-04-05 23:43:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2022-04-05 23:43:35,985 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 245 [2022-04-05 23:43:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:35,986 INFO L478 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2022-04-05 23:43:35,986 INFO L479 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) [2022-04-05 23:43:35,986 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2022-04-05 23:43:35,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-04-05 23:43:35,987 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:35,987 INFO L499 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:36,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:36,201 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-04-05 23:43:36,202 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:36,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:36,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1164878380, now seen corresponding path program 58 times [2022-04-05 23:43:36,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:36,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315750044] [2022-04-05 23:43:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:36,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 23:43:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 23:43:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 23:43:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:43:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:43:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:43:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:43:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:43:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:43:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:43:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:43:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:43:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:43:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:43:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:43:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:43:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:43:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:43:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:43:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:43:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:43:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:43:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:43:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:43:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:43:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:43:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:43:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:43:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:43:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 23:43:36,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:36,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315750044] [2022-04-05 23:43:36,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315750044] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:36,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498551198] [2022-04-05 23:43:36,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:43:36,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:36,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:36,720 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) [2022-04-05 23:43:36,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-04-05 23:43:36,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:43:36,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:36,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 63 conjunts are in the unsatisfiable core [2022-04-05 23:43:36,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 23:43:37,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-04-05 23:43:37,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498551198] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:37,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:37,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 39 [2022-04-05 23:43:37,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929327752] [2022-04-05 23:43:37,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:37,552 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-04-05 23:43:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:37,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-04-05 23:43:37,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=939, Unknown=0, NotChecked=0, Total=1482 [2022-04-05 23:43:37,552 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) [2022-04-05 23:43:38,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:38,182 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2022-04-05 23:43:38,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-04-05 23:43:38,183 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 [2022-04-05 23:43:38,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:38,184 INFO L225 Difference]: With dead ends: 262 [2022-04-05 23:43:38,184 INFO L226 Difference]: Without dead ends: 260 [2022-04-05 23:43:38,184 INFO L912 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 [2022-04-05 23:43:38,184 INFO L913 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 [2022-04-05 23:43:38,184 INFO L914 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] [2022-04-05 23:43:38,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-04-05 23:43:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2022-04-05 23:43:38,202 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) [2022-04-05 23:43:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2022-04-05 23:43:38,202 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 246 [2022-04-05 23:43:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:38,202 INFO L478 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2022-04-05 23:43:38,202 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 36 states have internal predecessors, (105), 31 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-05 23:43:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2022-04-05 23:43:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-04-05 23:43:38,203 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:38,203 INFO L499 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:38,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-04-05 23:43:38,404 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-04-05 23:43:38,404 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:38,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:38,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1122231225, now seen corresponding path program 59 times [2022-04-05 23:43:38,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:38,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799836832] [2022-04-05 23:43:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:38,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-04-05 23:43:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 23:43:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 23:43:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:43:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:43:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:43:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:43:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:43:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:43:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:43:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:43:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:43:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:43:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:43:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:43:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:43:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:43:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:43:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:43:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:43:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:43:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:43:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:43:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:43:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:43:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:43:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:43:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:43:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:43:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:43:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 23:43:39,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:39,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799836832] [2022-04-05 23:43:39,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799836832] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:39,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179047532] [2022-04-05 23:43:39,456 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:43:39,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:39,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:39,457 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) [2022-04-05 23:43:39,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-04-05 23:43:39,570 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-04-05 23:43:39,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:39,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 64 conjunts are in the unsatisfiable core [2022-04-05 23:43:39,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 23:43:39,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 23:43:40,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179047532] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:40,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:40,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 67 [2022-04-05 23:43:40,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346890787] [2022-04-05 23:43:40,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:40,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-04-05 23:43:40,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:40,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-04-05 23:43:40,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=3330, Unknown=0, NotChecked=0, Total=4422 [2022-04-05 23:43:40,297 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) [2022-04-05 23:43:42,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:42,024 INFO L93 Difference]: Finished difference Result 358 states and 390 transitions. [2022-04-05 23:43:42,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-04-05 23:43:42,024 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 [2022-04-05 23:43:42,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:42,025 INFO L225 Difference]: With dead ends: 358 [2022-04-05 23:43:42,025 INFO L226 Difference]: Without dead ends: 257 [2022-04-05 23:43:42,027 INFO L912 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 [2022-04-05 23:43:42,027 INFO L913 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 [2022-04-05 23:43:42,027 INFO L914 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] [2022-04-05 23:43:42,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-04-05 23:43:42,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2022-04-05 23:43:42,054 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) [2022-04-05 23:43:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2022-04-05 23:43:42,055 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 253 [2022-04-05 23:43:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:42,055 INFO L478 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2022-04-05 23:43:42,055 INFO L479 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) [2022-04-05 23:43:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2022-04-05 23:43:42,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-04-05 23:43:42,065 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:42,065 INFO L499 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:42,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:42,289 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:42,289 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:42,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:42,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2058141779, now seen corresponding path program 60 times [2022-04-05 23:43:42,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:42,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024397316] [2022-04-05 23:43:42,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:42,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 23:43:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 23:43:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 23:43:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:43:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:43:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:43:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:43:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:43:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:43:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:43:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:43:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:43:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:43:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:43:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:43:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:43:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:43:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:43:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:43:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:43:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:43:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:43:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:43:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:43:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:43:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:43:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:43:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:43:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:43:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:43:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 23:43:42,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:42,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024397316] [2022-04-05 23:43:42,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024397316] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:42,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389104436] [2022-04-05 23:43:42,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:43:42,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:42,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:42,791 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) [2022-04-05 23:43:42,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-04-05 23:43:42,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2022-04-05 23:43:42,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:42,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 65 conjunts are in the unsatisfiable core [2022-04-05 23:43:42,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 23:43:43,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-04-05 23:43:43,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389104436] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:43,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:43,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 40 [2022-04-05 23:43:43,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745242622] [2022-04-05 23:43:43,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:43,696 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-04-05 23:43:43,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:43,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-04-05 23:43:43,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=984, Unknown=0, NotChecked=0, Total=1560 [2022-04-05 23:43:43,696 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) [2022-04-05 23:43:44,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:44,336 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2022-04-05 23:43:44,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-04-05 23:43:44,336 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 [2022-04-05 23:43:44,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:44,337 INFO L225 Difference]: With dead ends: 270 [2022-04-05 23:43:44,338 INFO L226 Difference]: Without dead ends: 268 [2022-04-05 23:43:44,338 INFO L912 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 [2022-04-05 23:43:44,339 INFO L913 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 [2022-04-05 23:43:44,339 INFO L914 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] [2022-04-05 23:43:44,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-04-05 23:43:44,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2022-04-05 23:43:44,369 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) [2022-04-05 23:43:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2022-04-05 23:43:44,370 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 254 [2022-04-05 23:43:44,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:44,370 INFO L478 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2022-04-05 23:43:44,371 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.7) internal successors, (108), 37 states have internal predecessors, (108), 32 states have call successors, (35), 4 states have call predecessors, (35), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-04-05 23:43:44,371 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2022-04-05 23:43:44,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-04-05 23:43:44,372 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:44,372 INFO L499 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:44,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-04-05 23:43:44,587 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:44,587 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:44,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash 95714214, now seen corresponding path program 61 times [2022-04-05 23:43:44,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:44,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519996161] [2022-04-05 23:43:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:44,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-04-05 23:43:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 23:43:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 23:43:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:43:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:43:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:43:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:43:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:43:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:43:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:43:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:43:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:43:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:43:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:43:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:43:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:43:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:43:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:43:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:43:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:43:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:43:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:43:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:43:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:43:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:43:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:43:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:43:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:43:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:43:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:43:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:43:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-04-05 23:43:45,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:45,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519996161] [2022-04-05 23:43:45,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519996161] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:45,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268503625] [2022-04-05 23:43:45,748 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:43:45,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:45,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:45,749 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) [2022-04-05 23:43:45,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-04-05 23:43:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:45,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 66 conjunts are in the unsatisfiable core [2022-04-05 23:43:45,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-04-05 23:43:46,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-04-05 23:43:46,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268503625] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:46,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:46,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 69 [2022-04-05 23:43:46,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804944666] [2022-04-05 23:43:46,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:46,577 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-04-05 23:43:46,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:46,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-04-05 23:43:46,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2022-04-05 23:43:46,578 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) [2022-04-05 23:43:48,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:48,324 INFO L93 Difference]: Finished difference Result 369 states and 402 transitions. [2022-04-05 23:43:48,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-04-05 23:43:48,325 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 [2022-04-05 23:43:48,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:48,326 INFO L225 Difference]: With dead ends: 369 [2022-04-05 23:43:48,326 INFO L226 Difference]: Without dead ends: 265 [2022-04-05 23:43:48,327 INFO L912 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 [2022-04-05 23:43:48,327 INFO L913 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 [2022-04-05 23:43:48,328 INFO L914 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] [2022-04-05 23:43:48,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-04-05 23:43:48,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-04-05 23:43:48,352 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) [2022-04-05 23:43:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2022-04-05 23:43:48,353 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 261 [2022-04-05 23:43:48,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:48,353 INFO L478 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2022-04-05 23:43:48,353 INFO L479 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) [2022-04-05 23:43:48,353 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2022-04-05 23:43:48,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-04-05 23:43:48,354 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:48,355 INFO L499 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:48,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:48,578 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:48,578 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:48,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash 358406412, now seen corresponding path program 62 times [2022-04-05 23:43:48,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:48,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060693158] [2022-04-05 23:43:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:48,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 23:43:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 23:43:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 23:43:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:43:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:43:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:43:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:43:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:43:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:43:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:43:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:43:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:43:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:43:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:43:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:43:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:43:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:43:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:43:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:43:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:43:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:43:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:43:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:43:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:43:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:43:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:43:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:43:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:43:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:43:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:43:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:43:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-04-05 23:43:49,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:49,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060693158] [2022-04-05 23:43:49,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060693158] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:49,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536924659] [2022-04-05 23:43:49,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:43:49,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:49,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:49,113 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) [2022-04-05 23:43:49,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-04-05 23:43:49,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:43:49,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:49,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 67 conjunts are in the unsatisfiable core [2022-04-05 23:43:49,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-04-05 23:43:49,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-04-05 23:43:50,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536924659] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:50,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:50,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 41 [2022-04-05 23:43:50,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181801865] [2022-04-05 23:43:50,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:50,034 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-04-05 23:43:50,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:50,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-04-05 23:43:50,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=1030, Unknown=0, NotChecked=0, Total=1640 [2022-04-05 23:43:50,038 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) [2022-04-05 23:43:50,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:50,782 INFO L93 Difference]: Finished difference Result 278 states and 280 transitions. [2022-04-05 23:43:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-04-05 23:43:50,783 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 [2022-04-05 23:43:50,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:50,784 INFO L225 Difference]: With dead ends: 278 [2022-04-05 23:43:50,784 INFO L226 Difference]: Without dead ends: 276 [2022-04-05 23:43:50,784 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 615 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1822, Invalid=4184, Unknown=0, NotChecked=0, Total=6006 [2022-04-05 23:43:50,785 INFO L913 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 [2022-04-05 23:43:50,785 INFO L914 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] [2022-04-05 23:43:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-04-05 23:43:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2022-04-05 23:43:50,814 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) [2022-04-05 23:43:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2022-04-05 23:43:50,815 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 262 [2022-04-05 23:43:50,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:50,815 INFO L478 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2022-04-05 23:43:50,815 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 38 states have internal predecessors, (111), 33 states have call successors, (36), 4 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-05 23:43:50,815 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2022-04-05 23:43:50,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-04-05 23:43:50,817 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:50,817 INFO L499 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:50,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:51,031 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2022-04-05 23:43:51,031 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:51,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:51,032 INFO L85 PathProgramCache]: Analyzing trace with hash 703359335, now seen corresponding path program 63 times [2022-04-05 23:43:51,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:51,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011492874] [2022-04-05 23:43:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 23:43:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 23:43:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 23:43:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:43:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:43:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:43:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:43:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:43:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:43:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:43:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:43:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:43:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:43:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:43:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:43:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:43:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:43:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:43:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:43:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:43:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:43:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:43:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:43:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:43:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:43:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:43:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:43:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:43:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:43:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:43:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:43:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 23:43:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 23:43:52,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:52,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011492874] [2022-04-05 23:43:52,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011492874] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:52,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468909545] [2022-04-05 23:43:52,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:43:52,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:52,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:52,227 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) [2022-04-05 23:43:52,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-04-05 23:43:52,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2022-04-05 23:43:52,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:52,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 68 conjunts are in the unsatisfiable core [2022-04-05 23:43:52,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 23:43:52,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 23:43:53,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468909545] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:53,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:53,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 71 [2022-04-05 23:43:53,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296519034] [2022-04-05 23:43:53,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:53,139 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-04-05 23:43:53,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:53,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-04-05 23:43:53,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=3742, Unknown=0, NotChecked=0, Total=4970 [2022-04-05 23:43:53,140 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) [2022-04-05 23:43:54,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:54,913 INFO L93 Difference]: Finished difference Result 380 states and 414 transitions. [2022-04-05 23:43:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-04-05 23:43:54,914 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 [2022-04-05 23:43:54,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:54,915 INFO L225 Difference]: With dead ends: 380 [2022-04-05 23:43:54,915 INFO L226 Difference]: Without dead ends: 273 [2022-04-05 23:43:54,917 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4545 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3743, Invalid=15163, Unknown=0, NotChecked=0, Total=18906 [2022-04-05 23:43:54,917 INFO L913 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, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 23:43:54,917 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 95 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 23:43:54,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-04-05 23:43:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-04-05 23:43:54,936 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) [2022-04-05 23:43:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2022-04-05 23:43:54,937 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 269 [2022-04-05 23:43:54,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:54,937 INFO L478 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2022-04-05 23:43:54,937 INFO L479 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) [2022-04-05 23:43:54,937 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2022-04-05 23:43:54,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-04-05 23:43:54,938 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:54,939 INFO L499 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:54,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-04-05 23:43:55,145 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:55,145 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:55,146 INFO L85 PathProgramCache]: Analyzing trace with hash 19661005, now seen corresponding path program 64 times [2022-04-05 23:43:55,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:55,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495158228] [2022-04-05 23:43:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:55,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 23:43:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 23:43:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 23:43:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:43:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:43:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:43:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:43:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:43:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:43:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:43:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:43:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:43:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:43:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:43:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:43:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:43:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:43:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:43:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:43:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:43:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:43:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:43:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:43:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:43:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:43:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 23:43:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 23:43:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 23:43:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 23:43:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 23:43:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 23:43:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 23:43:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 23:43:55,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:55,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495158228] [2022-04-05 23:43:55,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495158228] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:55,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906460302] [2022-04-05 23:43:55,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:43:55,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:55,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:55,712 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) [2022-04-05 23:43:55,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-04-05 23:43:55,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:43:55,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:55,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 69 conjunts are in the unsatisfiable core [2022-04-05 23:43:55,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 23:43:56,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-04-05 23:43:56,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906460302] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:56,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:56,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 42 [2022-04-05 23:43:56,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330362660] [2022-04-05 23:43:56,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:56,580 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-04-05 23:43:56,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:56,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-04-05 23:43:56,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=1077, Unknown=0, NotChecked=0, Total=1722 [2022-04-05 23:43:56,581 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) [2022-04-05 23:43:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:43:57,320 INFO L93 Difference]: Finished difference Result 286 states and 288 transitions. [2022-04-05 23:43:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-04-05 23:43:57,321 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 [2022-04-05 23:43:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:43:57,322 INFO L225 Difference]: With dead ends: 286 [2022-04-05 23:43:57,322 INFO L226 Difference]: Without dead ends: 284 [2022-04-05 23:43:57,323 INFO L912 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 [2022-04-05 23:43:57,323 INFO L913 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 [2022-04-05 23:43:57,323 INFO L914 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] [2022-04-05 23:43:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-04-05 23:43:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 280. [2022-04-05 23:43:57,354 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) [2022-04-05 23:43:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2022-04-05 23:43:57,355 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 270 [2022-04-05 23:43:57,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:43:57,355 INFO L478 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2022-04-05 23:43:57,355 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.7142857142857144) internal successors, (114), 39 states have internal predecessors, (114), 34 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-04-05 23:43:57,355 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2022-04-05 23:43:57,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-04-05 23:43:57,357 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:43:57,357 INFO L499 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:43:57,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-04-05 23:43:57,577 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-04-05 23:43:57,577 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:43:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:43:57,578 INFO L85 PathProgramCache]: Analyzing trace with hash -975817082, now seen corresponding path program 65 times [2022-04-05 23:43:57,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:43:57,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730407025] [2022-04-05 23:43:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:43:57,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:43:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:43:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-04-05 23:43:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 23:43:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 23:43:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:43:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:43:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:43:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:43:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:43:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:43:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:43:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:43:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:43:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:43:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:43:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:43:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:43:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:43:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:43:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:43:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:43:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:43:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:43:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:43:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:43:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:43:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 23:43:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 23:43:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 23:43:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 23:43:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 23:43:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 23:43:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 23:43:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 23:43:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:43:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 23:43:58,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:43:58,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730407025] [2022-04-05 23:43:58,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730407025] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:43:58,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065079487] [2022-04-05 23:43:58,838 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:43:58,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:43:58,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:43:58,839 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) [2022-04-05 23:43:58,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-04-05 23:43:58,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2022-04-05 23:43:58,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:43:58,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 70 conjunts are in the unsatisfiable core [2022-04-05 23:43:58,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:43:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 23:43:59,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:43:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 23:43:59,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065079487] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:43:59,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:43:59,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 73 [2022-04-05 23:43:59,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825104858] [2022-04-05 23:43:59,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:43:59,727 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-04-05 23:43:59,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:43:59,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-04-05 23:43:59,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1299, Invalid=3957, Unknown=0, NotChecked=0, Total=5256 [2022-04-05 23:43:59,727 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) [2022-04-05 23:44:01,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:01,497 INFO L93 Difference]: Finished difference Result 391 states and 426 transitions. [2022-04-05 23:44:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-04-05 23:44:01,498 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 [2022-04-05 23:44:01,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:01,499 INFO L225 Difference]: With dead ends: 391 [2022-04-05 23:44:01,499 INFO L226 Difference]: Without dead ends: 281 [2022-04-05 23:44:01,500 INFO L912 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 [2022-04-05 23:44:01,501 INFO L913 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 [2022-04-05 23:44:01,501 INFO L914 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] [2022-04-05 23:44:01,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-04-05 23:44:01,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2022-04-05 23:44:01,533 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) [2022-04-05 23:44:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2022-04-05 23:44:01,534 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 277 [2022-04-05 23:44:01,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:01,534 INFO L478 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2022-04-05 23:44:01,535 INFO L479 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) [2022-04-05 23:44:01,535 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2022-04-05 23:44:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-04-05 23:44:01,536 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:01,536 INFO L499 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:01,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-04-05 23:44:01,758 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-04-05 23:44:01,759 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:01,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:01,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1590888428, now seen corresponding path program 66 times [2022-04-05 23:44:01,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:01,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471735846] [2022-04-05 23:44:01,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:01,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 23:44:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 23:44:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 23:44:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:44:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:44:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:44:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:44:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:44:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:44:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:44:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:44:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:44:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:44:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:44:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:44:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:44:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:44:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:44:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:44:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:44:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:44:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:44:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:44:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:44:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:44:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:44:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 23:44:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 23:44:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 23:44:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 23:44:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 23:44:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 23:44:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 23:44:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 23:44:02,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:02,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471735846] [2022-04-05 23:44:02,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471735846] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:02,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727737027] [2022-04-05 23:44:02,383 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:44:02,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:02,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:02,387 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) [2022-04-05 23:44:02,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-04-05 23:44:02,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2022-04-05 23:44:02,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:44:02,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 71 conjunts are in the unsatisfiable core [2022-04-05 23:44:02,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 23:44:02,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-04-05 23:44:03,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727737027] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:03,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:03,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 43 [2022-04-05 23:44:03,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146118300] [2022-04-05 23:44:03,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:03,310 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-04-05 23:44:03,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:03,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-04-05 23:44:03,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=1125, Unknown=0, NotChecked=0, Total=1806 [2022-04-05 23:44:03,311 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) [2022-04-05 23:44:04,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:04,052 INFO L93 Difference]: Finished difference Result 294 states and 296 transitions. [2022-04-05 23:44:04,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-04-05 23:44:04,053 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 [2022-04-05 23:44:04,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:04,054 INFO L225 Difference]: With dead ends: 294 [2022-04-05 23:44:04,054 INFO L226 Difference]: Without dead ends: 292 [2022-04-05 23:44:04,055 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 653 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2035, Invalid=4607, Unknown=0, NotChecked=0, Total=6642 [2022-04-05 23:44:04,055 INFO L913 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 [2022-04-05 23:44:04,055 INFO L914 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] [2022-04-05 23:44:04,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-04-05 23:44:04,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 288. [2022-04-05 23:44:04,076 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) [2022-04-05 23:44:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2022-04-05 23:44:04,076 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 278 [2022-04-05 23:44:04,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:04,077 INFO L478 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2022-04-05 23:44:04,077 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 40 states have internal predecessors, (117), 35 states have call successors, (38), 4 states have call predecessors, (38), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-05 23:44:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2022-04-05 23:44:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-04-05 23:44:04,078 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:04,078 INFO L499 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:04,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-04-05 23:44:04,292 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-04-05 23:44:04,292 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:04,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash -892486009, now seen corresponding path program 67 times [2022-04-05 23:44:04,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:04,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995028280] [2022-04-05 23:44:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:04,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-05 23:44:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 23:44:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 23:44:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:44:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:44:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:44:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:44:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:44:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:44:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:44:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:44:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:44:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:44:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:44:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:44:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:44:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:44:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:44:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:44:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:44:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:44:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:44:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:44:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:44:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:44:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:44:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 23:44:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 23:44:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 23:44:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 23:44:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 23:44:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 23:44:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 23:44:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 23:44:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 23:44:05,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:05,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995028280] [2022-04-05 23:44:05,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995028280] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:05,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649346624] [2022-04-05 23:44:05,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:44:05,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:05,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:05,628 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) [2022-04-05 23:44:05,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-04-05 23:44:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:05,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 72 conjunts are in the unsatisfiable core [2022-04-05 23:44:05,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 23:44:06,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 23:44:06,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649346624] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:06,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:06,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73, 73] total 75 [2022-04-05 23:44:06,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978395211] [2022-04-05 23:44:06,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:06,518 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-04-05 23:44:06,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:06,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-04-05 23:44:06,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1372, Invalid=4178, Unknown=0, NotChecked=0, Total=5550 [2022-04-05 23:44:06,523 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) [2022-04-05 23:44:08,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:08,894 INFO L93 Difference]: Finished difference Result 402 states and 438 transitions. [2022-04-05 23:44:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-04-05 23:44:08,894 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 [2022-04-05 23:44:08,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:08,895 INFO L225 Difference]: With dead ends: 402 [2022-04-05 23:44:08,895 INFO L226 Difference]: Without dead ends: 289 [2022-04-05 23:44:08,897 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 638 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5101 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4179, Invalid=16991, Unknown=0, NotChecked=0, Total=21170 [2022-04-05 23:44:08,897 INFO L913 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 [2022-04-05 23:44:08,897 INFO L914 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] [2022-04-05 23:44:08,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-04-05 23:44:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-04-05 23:44:08,918 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) [2022-04-05 23:44:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2022-04-05 23:44:08,918 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 285 [2022-04-05 23:44:08,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:08,918 INFO L478 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2022-04-05 23:44:08,919 INFO L479 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) [2022-04-05 23:44:08,919 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2022-04-05 23:44:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-04-05 23:44:08,920 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:08,920 INFO L499 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:08,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-04-05 23:44:09,120 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-04-05 23:44:09,120 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:09,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1716663827, now seen corresponding path program 68 times [2022-04-05 23:44:09,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:09,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9207972] [2022-04-05 23:44:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:09,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 23:44:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 23:44:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:44:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:44:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:44:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:44:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:44:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:44:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:44:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:44:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:44:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:44:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:44:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:44:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:44:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:44:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:44:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:44:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:44:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:44:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:44:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:44:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:44:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:44:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:44:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:44:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:44:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 23:44:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 23:44:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 23:44:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 23:44:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 23:44:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 23:44:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 23:44:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 23:44:09,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:09,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9207972] [2022-04-05 23:44:09,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9207972] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:09,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771122217] [2022-04-05 23:44:09,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:44:09,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:09,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:09,724 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) [2022-04-05 23:44:09,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-04-05 23:44:09,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:44:09,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:44:09,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 73 conjunts are in the unsatisfiable core [2022-04-05 23:44:09,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:10,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 23:44:10,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-04-05 23:44:10,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771122217] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:10,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:10,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 44 [2022-04-05 23:44:10,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664293494] [2022-04-05 23:44:10,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:10,649 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-04-05 23:44:10,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:10,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-04-05 23:44:10,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=718, Invalid=1174, Unknown=0, NotChecked=0, Total=1892 [2022-04-05 23:44:10,650 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) [2022-04-05 23:44:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:11,442 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2022-04-05 23:44:11,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-04-05 23:44:11,443 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 [2022-04-05 23:44:11,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:11,447 INFO L225 Difference]: With dead ends: 302 [2022-04-05 23:44:11,448 INFO L226 Difference]: Without dead ends: 300 [2022-04-05 23:44:11,448 INFO L912 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 [2022-04-05 23:44:11,448 INFO L913 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 [2022-04-05 23:44:11,449 INFO L914 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] [2022-04-05 23:44:11,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-04-05 23:44:11,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 296. [2022-04-05 23:44:11,475 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) [2022-04-05 23:44:11,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2022-04-05 23:44:11,475 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 286 [2022-04-05 23:44:11,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:11,476 INFO L478 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2022-04-05 23:44:11,476 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.727272727272727) internal successors, (120), 41 states have internal predecessors, (120), 36 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-04-05 23:44:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2022-04-05 23:44:11,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-04-05 23:44:11,477 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:11,477 INFO L499 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:11,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-04-05 23:44:11,690 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:11,690 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:11,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:11,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1835669146, now seen corresponding path program 69 times [2022-04-05 23:44:11,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:11,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590584695] [2022-04-05 23:44:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:11,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-05 23:44:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 23:44:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:44:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:44:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:44:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:44:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:44:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:44:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:44:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:44:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:44:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:44:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:44:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:44:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:44:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:44:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:44:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:44:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:44:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:44:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:44:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:44:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:44:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:44:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:44:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:44:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:44:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 23:44:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 23:44:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 23:44:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 23:44:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 23:44:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 23:44:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 23:44:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 23:44:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 23:44:13,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:13,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590584695] [2022-04-05 23:44:13,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590584695] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:13,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978441076] [2022-04-05 23:44:13,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:44:13,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:13,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:13,072 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) [2022-04-05 23:44:13,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-04-05 23:44:13,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2022-04-05 23:44:13,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:44:13,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 74 conjunts are in the unsatisfiable core [2022-04-05 23:44:13,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 23:44:13,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 23:44:14,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978441076] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:14,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:14,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 75] total 77 [2022-04-05 23:44:14,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307598074] [2022-04-05 23:44:14,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:14,052 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-04-05 23:44:14,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-04-05 23:44:14,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1447, Invalid=4405, Unknown=0, NotChecked=0, Total=5852 [2022-04-05 23:44:14,052 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) [2022-04-05 23:44:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:16,009 INFO L93 Difference]: Finished difference Result 413 states and 450 transitions. [2022-04-05 23:44:16,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-04-05 23:44:16,009 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 [2022-04-05 23:44:16,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:16,011 INFO L225 Difference]: With dead ends: 413 [2022-04-05 23:44:16,011 INFO L226 Difference]: Without dead ends: 297 [2022-04-05 23:44:16,013 INFO L912 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 [2022-04-05 23:44:16,013 INFO L913 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, 0.5s IncrementalHoareTripleChecker+Time [2022-04-05 23:44:16,013 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 98 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-05 23:44:16,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-04-05 23:44:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-04-05 23:44:16,048 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) [2022-04-05 23:44:16,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2022-04-05 23:44:16,048 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 293 [2022-04-05 23:44:16,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:16,049 INFO L478 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2022-04-05 23:44:16,049 INFO L479 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) [2022-04-05 23:44:16,049 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2022-04-05 23:44:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-04-05 23:44:16,057 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:16,057 INFO L499 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:16,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-04-05 23:44:16,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:16,271 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:16,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:16,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2055262516, now seen corresponding path program 70 times [2022-04-05 23:44:16,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:16,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098349712] [2022-04-05 23:44:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:16,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 23:44:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 23:44:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:44:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:44:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:44:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:44:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:44:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:44:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:44:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:44:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:44:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:44:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:44:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:44:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:44:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:44:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:44:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:44:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:44:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:44:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:44:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:44:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:44:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:44:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:44:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:44:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:44:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:44:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 23:44:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 23:44:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 23:44:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 23:44:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 23:44:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 23:44:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 23:44:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 23:44:16,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:16,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098349712] [2022-04-05 23:44:16,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098349712] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:16,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231917835] [2022-04-05 23:44:16,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:44:16,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:16,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:16,909 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) [2022-04-05 23:44:16,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-04-05 23:44:17,003 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:44:17,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:44:17,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 75 conjunts are in the unsatisfiable core [2022-04-05 23:44:17,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 23:44:17,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-04-05 23:44:17,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231917835] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:17,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:17,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 45 [2022-04-05 23:44:17,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386356900] [2022-04-05 23:44:17,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:17,865 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-04-05 23:44:17,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:17,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-04-05 23:44:17,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=756, Invalid=1224, Unknown=0, NotChecked=0, Total=1980 [2022-04-05 23:44:17,866 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) [2022-04-05 23:44:18,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:18,681 INFO L93 Difference]: Finished difference Result 310 states and 312 transitions. [2022-04-05 23:44:18,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-04-05 23:44:18,681 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 [2022-04-05 23:44:18,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:18,682 INFO L225 Difference]: With dead ends: 310 [2022-04-05 23:44:18,682 INFO L226 Difference]: Without dead ends: 308 [2022-04-05 23:44:18,683 INFO L912 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 [2022-04-05 23:44:18,683 INFO L913 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 [2022-04-05 23:44:18,683 INFO L914 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] [2022-04-05 23:44:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-04-05 23:44:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2022-04-05 23:44:18,708 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) [2022-04-05 23:44:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2022-04-05 23:44:18,708 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 294 [2022-04-05 23:44:18,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:18,709 INFO L478 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2022-04-05 23:44:18,709 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7333333333333334) internal successors, (123), 42 states have internal predecessors, (123), 37 states have call successors, (40), 4 states have call predecessors, (40), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-04-05 23:44:18,709 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2022-04-05 23:44:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-04-05 23:44:18,710 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:18,710 INFO L499 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:18,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-04-05 23:44:18,910 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:18,911 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:18,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1548884903, now seen corresponding path program 71 times [2022-04-05 23:44:18,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:18,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260642475] [2022-04-05 23:44:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-04-05 23:44:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 23:44:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:44:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:44:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:44:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:44:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:44:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:44:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:44:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:44:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:44:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:44:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:44:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:44:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:44:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:44:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:44:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:44:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:44:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:44:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:44:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:44:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:44:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:44:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:44:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:44:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:44:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:44:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 23:44:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 23:44:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 23:44:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 23:44:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 23:44:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 23:44:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 23:44:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 23:44:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-04-05 23:44:20,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:20,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260642475] [2022-04-05 23:44:20,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260642475] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:20,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334676445] [2022-04-05 23:44:20,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:44:20,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:20,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:20,371 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) [2022-04-05 23:44:20,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-04-05 23:44:20,496 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2022-04-05 23:44:20,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:44:20,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 76 conjunts are in the unsatisfiable core [2022-04-05 23:44:20,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-04-05 23:44:20,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-04-05 23:44:21,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334676445] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:21,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:21,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 79 [2022-04-05 23:44:21,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002908714] [2022-04-05 23:44:21,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:21,422 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-04-05 23:44:21,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:21,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-04-05 23:44:21,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1524, Invalid=4638, Unknown=0, NotChecked=0, Total=6162 [2022-04-05 23:44:21,423 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) [2022-04-05 23:44:23,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:23,599 INFO L93 Difference]: Finished difference Result 424 states and 462 transitions. [2022-04-05 23:44:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-04-05 23:44:23,600 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 [2022-04-05 23:44:23,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:23,601 INFO L225 Difference]: With dead ends: 424 [2022-04-05 23:44:23,601 INFO L226 Difference]: Without dead ends: 305 [2022-04-05 23:44:23,603 INFO L912 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 [2022-04-05 23:44:23,604 INFO L913 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 [2022-04-05 23:44:23,604 INFO L914 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] [2022-04-05 23:44:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-04-05 23:44:23,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-04-05 23:44:23,640 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) [2022-04-05 23:44:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2022-04-05 23:44:23,641 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 301 [2022-04-05 23:44:23,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:23,641 INFO L478 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2022-04-05 23:44:23,641 INFO L479 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) [2022-04-05 23:44:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2022-04-05 23:44:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-04-05 23:44:23,642 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:23,643 INFO L499 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:23,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-04-05 23:44:23,865 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-04-05 23:44:23,865 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:23,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash -613770483, now seen corresponding path program 72 times [2022-04-05 23:44:23,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:23,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645947112] [2022-04-05 23:44:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:23,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 23:44:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 23:44:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:44:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:44:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:44:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:44:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:44:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:44:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:44:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:44:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:44:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:44:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:44:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:44:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:44:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:44:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:44:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:44:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:44:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:44:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:44:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:44:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:44:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:44:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:44:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:44:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:44:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:44:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:44:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 23:44:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 23:44:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 23:44:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 23:44:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 23:44:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 23:44:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 23:44:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-04-05 23:44:24,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:24,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645947112] [2022-04-05 23:44:24,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645947112] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:24,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267086451] [2022-04-05 23:44:24,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:44:24,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:24,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:24,672 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) [2022-04-05 23:44:24,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-04-05 23:44:24,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2022-04-05 23:44:24,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:44:24,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 77 conjunts are in the unsatisfiable core [2022-04-05 23:44:24,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-04-05 23:44:25,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2022-04-05 23:44:25,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267086451] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:25,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:25,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 42] total 46 [2022-04-05 23:44:25,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844025321] [2022-04-05 23:44:25,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:25,660 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-04-05 23:44:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-04-05 23:44:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=795, Invalid=1275, Unknown=0, NotChecked=0, Total=2070 [2022-04-05 23:44:25,661 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) [2022-04-05 23:44:26,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:26,499 INFO L93 Difference]: Finished difference Result 318 states and 320 transitions. [2022-04-05 23:44:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-04-05 23:44:26,499 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 [2022-04-05 23:44:26,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:26,500 INFO L225 Difference]: With dead ends: 318 [2022-04-05 23:44:26,500 INFO L226 Difference]: Without dead ends: 316 [2022-04-05 23:44:26,500 INFO L912 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 [2022-04-05 23:44:26,501 INFO L913 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 [2022-04-05 23:44:26,501 INFO L914 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] [2022-04-05 23:44:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-04-05 23:44:26,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 312. [2022-04-05 23:44:26,532 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) [2022-04-05 23:44:26,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2022-04-05 23:44:26,532 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 302 [2022-04-05 23:44:26,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:26,532 INFO L478 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2022-04-05 23:44:26,532 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.739130434782609) internal successors, (126), 43 states have internal predecessors, (126), 38 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-05 23:44:26,533 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2022-04-05 23:44:26,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-04-05 23:44:26,534 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:26,534 INFO L499 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:26,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-04-05 23:44:26,734 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:26,734 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:26,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash -148794298, now seen corresponding path program 73 times [2022-04-05 23:44:26,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:26,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819406944] [2022-04-05 23:44:26,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:26,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-05 23:44:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 23:44:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:44:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:44:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:44:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:44:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:44:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:44:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:44:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:44:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:44:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:44:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:44:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:44:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:44:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:44:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:44:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:44:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:44:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:44:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:44:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:44:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:44:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:44:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:44:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:44:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:44:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:44:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:44:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 23:44:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 23:44:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 23:44:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 23:44:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 23:44:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 23:44:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 23:44:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 23:44:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 23:44:28,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:28,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819406944] [2022-04-05 23:44:28,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819406944] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:28,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313286975] [2022-04-05 23:44:28,266 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:44:28,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:28,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:28,272 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) [2022-04-05 23:44:28,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-04-05 23:44:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:28,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 78 conjunts are in the unsatisfiable core [2022-04-05 23:44:28,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 23:44:28,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 23:44:29,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313286975] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:29,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:29,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79, 79] total 81 [2022-04-05 23:44:29,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114746077] [2022-04-05 23:44:29,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:29,281 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-04-05 23:44:29,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:29,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-04-05 23:44:29,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=4877, Unknown=0, NotChecked=0, Total=6480 [2022-04-05 23:44:29,281 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) [2022-04-05 23:44:31,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:31,485 INFO L93 Difference]: Finished difference Result 435 states and 474 transitions. [2022-04-05 23:44:31,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-04-05 23:44:31,486 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 [2022-04-05 23:44:31,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:31,487 INFO L225 Difference]: With dead ends: 435 [2022-04-05 23:44:31,487 INFO L226 Difference]: Without dead ends: 313 [2022-04-05 23:44:31,489 INFO L912 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 [2022-04-05 23:44:31,490 INFO L913 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 [2022-04-05 23:44:31,490 INFO L914 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] [2022-04-05 23:44:31,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-04-05 23:44:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-04-05 23:44:31,535 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) [2022-04-05 23:44:31,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2022-04-05 23:44:31,536 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 309 [2022-04-05 23:44:31,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:31,536 INFO L478 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2022-04-05 23:44:31,537 INFO L479 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) [2022-04-05 23:44:31,537 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2022-04-05 23:44:31,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-04-05 23:44:31,538 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:31,538 INFO L499 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:31,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-04-05 23:44:31,738 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:31,738 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:31,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:31,739 INFO L85 PathProgramCache]: Analyzing trace with hash -460370516, now seen corresponding path program 74 times [2022-04-05 23:44:31,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:31,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234719829] [2022-04-05 23:44:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:31,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 23:44:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 23:44:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:44:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:44:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:44:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:44:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:44:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:44:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:44:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:44:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:44:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:44:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:44:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:44:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:44:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:44:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:44:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:44:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:44:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:44:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:44:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:44:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:44:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:44:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:44:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:44:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:44:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:44:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:44:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:44:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 23:44:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 23:44:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 23:44:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 23:44:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 23:44:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 23:44:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 23:44:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 23:44:32,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:32,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234719829] [2022-04-05 23:44:32,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234719829] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:32,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232856493] [2022-04-05 23:44:32,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:44:32,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:32,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:32,461 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) [2022-04-05 23:44:32,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-04-05 23:44:32,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:44:32,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:44:32,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 79 conjunts are in the unsatisfiable core [2022-04-05 23:44:32,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 23:44:32,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-04-05 23:44:33,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232856493] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:33,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:33,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 47 [2022-04-05 23:44:33,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489226768] [2022-04-05 23:44:33,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:33,433 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-04-05 23:44:33,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:33,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-04-05 23:44:33,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=835, Invalid=1327, Unknown=0, NotChecked=0, Total=2162 [2022-04-05 23:44:33,434 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) [2022-04-05 23:44:34,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:34,295 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2022-04-05 23:44:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-04-05 23:44:34,295 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 [2022-04-05 23:44:34,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:34,296 INFO L225 Difference]: With dead ends: 326 [2022-04-05 23:44:34,296 INFO L226 Difference]: Without dead ends: 324 [2022-04-05 23:44:34,297 INFO L912 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 [2022-04-05 23:44:34,297 INFO L913 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 [2022-04-05 23:44:34,297 INFO L914 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] [2022-04-05 23:44:34,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-04-05 23:44:34,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 320. [2022-04-05 23:44:34,322 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) [2022-04-05 23:44:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2022-04-05 23:44:34,323 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 310 [2022-04-05 23:44:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:34,323 INFO L478 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2022-04-05 23:44:34,323 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.74468085106383) internal successors, (129), 44 states have internal predecessors, (129), 39 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-04-05 23:44:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2022-04-05 23:44:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-04-05 23:44:34,324 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:34,325 INFO L499 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:34,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-04-05 23:44:34,538 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-04-05 23:44:34,538 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:34,538 INFO L85 PathProgramCache]: Analyzing trace with hash 864780487, now seen corresponding path program 75 times [2022-04-05 23:44:34,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:34,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555085567] [2022-04-05 23:44:34,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:34,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-04-05 23:44:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 23:44:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:44:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:44:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:44:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:44:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:44:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:44:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:44:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:44:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:44:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:44:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:44:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:44:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:44:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:44:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:44:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:44:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:44:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:44:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:44:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:44:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:44:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:44:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:44:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:44:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:44:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:44:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:44:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:44:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 23:44:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 23:44:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 23:44:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 23:44:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 23:44:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 23:44:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 23:44:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 23:44:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 23:44:36,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:36,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555085567] [2022-04-05 23:44:36,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555085567] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:36,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768628118] [2022-04-05 23:44:36,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:44:36,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:36,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:36,137 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) [2022-04-05 23:44:36,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-04-05 23:44:36,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2022-04-05 23:44:36,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:44:36,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 80 conjunts are in the unsatisfiable core [2022-04-05 23:44:36,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 23:44:36,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 23:44:37,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768628118] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:37,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:37,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81, 81] total 83 [2022-04-05 23:44:37,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701838111] [2022-04-05 23:44:37,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:37,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-04-05 23:44:37,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:37,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-04-05 23:44:37,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5122, Unknown=0, NotChecked=0, Total=6806 [2022-04-05 23:44:37,165 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) [2022-04-05 23:44:39,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:39,521 INFO L93 Difference]: Finished difference Result 446 states and 486 transitions. [2022-04-05 23:44:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-04-05 23:44:39,522 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 [2022-04-05 23:44:39,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:39,523 INFO L225 Difference]: With dead ends: 446 [2022-04-05 23:44:39,523 INFO L226 Difference]: Without dead ends: 321 [2022-04-05 23:44:39,525 INFO L912 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 [2022-04-05 23:44:39,525 INFO L913 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 [2022-04-05 23:44:39,525 INFO L914 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] [2022-04-05 23:44:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-04-05 23:44:39,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-04-05 23:44:39,565 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) [2022-04-05 23:44:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2022-04-05 23:44:39,565 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 317 [2022-04-05 23:44:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:39,566 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2022-04-05 23:44:39,566 INFO L479 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) [2022-04-05 23:44:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2022-04-05 23:44:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-04-05 23:44:39,567 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:39,567 INFO L499 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:39,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-04-05 23:44:39,789 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-04-05 23:44:39,790 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash -344689619, now seen corresponding path program 76 times [2022-04-05 23:44:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:39,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297410509] [2022-04-05 23:44:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 23:44:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 23:44:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:44:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:44:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:44:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:44:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:44:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:44:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:44:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:44:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:44:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:44:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:44:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:44:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:44:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:44:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:44:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:44:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:44:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:44:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:44:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:44:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:44:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:44:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:44:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:44:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:44:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:44:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:44:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:44:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 23:44:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 23:44:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 23:44:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 23:44:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 23:44:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 23:44:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 23:44:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 23:44:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 23:44:40,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:40,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297410509] [2022-04-05 23:44:40,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297410509] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:40,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878762016] [2022-04-05 23:44:40,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:44:40,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:40,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:40,571 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) [2022-04-05 23:44:40,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-04-05 23:44:40,675 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:44:40,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:44:40,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 81 conjunts are in the unsatisfiable core [2022-04-05 23:44:40,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 23:44:41,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-04-05 23:44:41,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878762016] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:41,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:41,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 48 [2022-04-05 23:44:41,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039152222] [2022-04-05 23:44:41,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:41,574 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-04-05 23:44:41,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:41,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-04-05 23:44:41,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2022-04-05 23:44:41,579 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) [2022-04-05 23:44:42,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:42,478 INFO L93 Difference]: Finished difference Result 334 states and 336 transitions. [2022-04-05 23:44:42,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-04-05 23:44:42,478 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 [2022-04-05 23:44:42,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:42,479 INFO L225 Difference]: With dead ends: 334 [2022-04-05 23:44:42,479 INFO L226 Difference]: Without dead ends: 332 [2022-04-05 23:44:42,481 INFO L912 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 [2022-04-05 23:44:42,481 INFO L913 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 [2022-04-05 23:44:42,481 INFO L914 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] [2022-04-05 23:44:42,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-04-05 23:44:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 328. [2022-04-05 23:44:42,510 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) [2022-04-05 23:44:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2022-04-05 23:44:42,511 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 318 [2022-04-05 23:44:42,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:42,511 INFO L478 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2022-04-05 23:44:42,511 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.75) internal successors, (132), 45 states have internal predecessors, (132), 40 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-04-05 23:44:42,511 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2022-04-05 23:44:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-04-05 23:44:42,512 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:42,512 INFO L499 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:42,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-04-05 23:44:42,713 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:42,713 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:42,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1445410598, now seen corresponding path program 77 times [2022-04-05 23:44:42,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:42,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392892347] [2022-04-05 23:44:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:42,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-04-05 23:44:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 23:44:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:44:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:44:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:44:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:44:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:44:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:44:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:44:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:44:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:44:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:44:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:44:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:44:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:44:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:44:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:44:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:44:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:44:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:44:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:44:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:44:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:44:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:44:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:44:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:44:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:44:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:44:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:44:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:44:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 23:44:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 23:44:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 23:44:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 23:44:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 23:44:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 23:44:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 23:44:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 23:44:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 23:44:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 23:44:44,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:44,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392892347] [2022-04-05 23:44:44,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392892347] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:44,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671519340] [2022-04-05 23:44:44,401 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:44:44,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:44,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:44,402 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) [2022-04-05 23:44:44,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-04-05 23:44:44,537 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2022-04-05 23:44:44,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:44:44,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 82 conjunts are in the unsatisfiable core [2022-04-05 23:44:44,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:44,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 23:44:44,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 23:44:45,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671519340] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:45,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:45,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83, 83] total 85 [2022-04-05 23:44:45,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365442268] [2022-04-05 23:44:45,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:45,460 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-04-05 23:44:45,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:45,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-04-05 23:44:45,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1767, Invalid=5373, Unknown=0, NotChecked=0, Total=7140 [2022-04-05 23:44:45,461 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) [2022-04-05 23:44:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:48,065 INFO L93 Difference]: Finished difference Result 457 states and 498 transitions. [2022-04-05 23:44:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-04-05 23:44:48,066 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 [2022-04-05 23:44:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:48,067 INFO L225 Difference]: With dead ends: 457 [2022-04-05 23:44:48,067 INFO L226 Difference]: Without dead ends: 329 [2022-04-05 23:44:48,069 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 728 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6631 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5374, Invalid=22016, Unknown=0, NotChecked=0, Total=27390 [2022-04-05 23:44:48,069 INFO L913 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 [2022-04-05 23:44:48,069 INFO L914 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] [2022-04-05 23:44:48,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-04-05 23:44:48,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-04-05 23:44:48,105 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) [2022-04-05 23:44:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2022-04-05 23:44:48,105 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 325 [2022-04-05 23:44:48,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:48,105 INFO L478 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2022-04-05 23:44:48,105 INFO L479 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) [2022-04-05 23:44:48,105 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2022-04-05 23:44:48,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-04-05 23:44:48,106 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:48,107 INFO L499 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:48,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-04-05 23:44:48,307 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:48,307 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:48,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:48,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1364106100, now seen corresponding path program 78 times [2022-04-05 23:44:48,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:48,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136053875] [2022-04-05 23:44:48,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:48,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 23:44:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 23:44:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:44:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:44:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:44:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:44:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:44:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:44:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:44:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:44:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:44:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:44:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:44:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:44:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:44:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:44:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:44:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:44:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:44:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:44:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:44:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:44:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:44:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:44:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 23:44:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 23:44:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 23:44:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 23:44:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 23:44:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 23:44:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 23:44:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 23:44:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 23:44:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 23:44:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 23:44:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 23:44:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 23:44:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 23:44:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 23:44:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 23:44:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:49,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136053875] [2022-04-05 23:44:49,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136053875] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:49,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930445106] [2022-04-05 23:44:49,054 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:44:49,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:49,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:49,055 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) [2022-04-05 23:44:49,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-04-05 23:44:49,209 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2022-04-05 23:44:49,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:44:49,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 83 conjunts are in the unsatisfiable core [2022-04-05 23:44:49,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 23:44:49,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-04-05 23:44:50,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930445106] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:50,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:50,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 49 [2022-04-05 23:44:50,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119487885] [2022-04-05 23:44:50,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:50,124 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-04-05 23:44:50,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:50,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-04-05 23:44:50,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=918, Invalid=1434, Unknown=0, NotChecked=0, Total=2352 [2022-04-05 23:44:50,125 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) [2022-04-05 23:44:51,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:51,061 INFO L93 Difference]: Finished difference Result 342 states and 344 transitions. [2022-04-05 23:44:51,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-04-05 23:44:51,062 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 [2022-04-05 23:44:51,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:51,063 INFO L225 Difference]: With dead ends: 342 [2022-04-05 23:44:51,063 INFO L226 Difference]: Without dead ends: 340 [2022-04-05 23:44:51,063 INFO L912 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 [2022-04-05 23:44:51,064 INFO L913 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 [2022-04-05 23:44:51,064 INFO L914 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] [2022-04-05 23:44:51,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-04-05 23:44:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2022-04-05 23:44:51,091 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) [2022-04-05 23:44:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2022-04-05 23:44:51,091 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 326 [2022-04-05 23:44:51,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:51,092 INFO L478 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2022-04-05 23:44:51,092 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 46 states have internal predecessors, (135), 41 states have call successors, (44), 4 states have call predecessors, (44), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-04-05 23:44:51,092 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2022-04-05 23:44:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2022-04-05 23:44:51,093 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:51,093 INFO L499 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:51,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-04-05 23:44:51,293 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-04-05 23:44:51,294 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:51,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1577840103, now seen corresponding path program 79 times [2022-04-05 23:44:51,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:51,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569925385] [2022-04-05 23:44:51,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:51,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-04-05 23:44:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 23:44:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:44:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:44:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:44:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:44:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:44:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:44:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:44:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:44:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:44:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:44:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:44:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:44:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:44:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:44:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:44:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:44:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:44:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:44:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:44:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:44:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:44:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:44:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 23:44:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 23:44:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 23:44:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 23:44:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 23:44:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 23:44:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 23:44:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 23:44:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 23:44:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 23:44:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 23:44:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 23:44:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 23:44:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 23:44:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 23:44:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 23:44:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 23:44:53,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:53,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569925385] [2022-04-05 23:44:53,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569925385] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:53,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357929776] [2022-04-05 23:44:53,075 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:44:53,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:53,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:53,076 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) [2022-04-05 23:44:53,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-04-05 23:44:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:53,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 84 conjunts are in the unsatisfiable core [2022-04-05 23:44:53,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 23:44:53,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 23:44:54,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357929776] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:54,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:54,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85, 85] total 87 [2022-04-05 23:44:54,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316761164] [2022-04-05 23:44:54,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:54,108 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-04-05 23:44:54,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-04-05 23:44:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1852, Invalid=5630, Unknown=0, NotChecked=0, Total=7482 [2022-04-05 23:44:54,109 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) [2022-04-05 23:44:56,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:56,795 INFO L93 Difference]: Finished difference Result 468 states and 510 transitions. [2022-04-05 23:44:56,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-04-05 23:44:56,796 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 [2022-04-05 23:44:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:56,797 INFO L225 Difference]: With dead ends: 468 [2022-04-05 23:44:56,797 INFO L226 Difference]: Without dead ends: 337 [2022-04-05 23:44:56,799 INFO L912 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 [2022-04-05 23:44:56,799 INFO L913 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 [2022-04-05 23:44:56,799 INFO L914 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] [2022-04-05 23:44:56,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-04-05 23:44:56,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2022-04-05 23:44:56,842 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) [2022-04-05 23:44:56,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2022-04-05 23:44:56,843 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 333 [2022-04-05 23:44:56,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:56,843 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2022-04-05 23:44:56,843 INFO L479 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) [2022-04-05 23:44:56,843 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2022-04-05 23:44:56,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-04-05 23:44:56,844 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:56,844 INFO L499 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:56,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-04-05 23:44:57,044 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:57,045 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:44:57,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:44:57,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1487055539, now seen corresponding path program 80 times [2022-04-05 23:44:57,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:44:57,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950299935] [2022-04-05 23:44:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:44:57,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:44:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:44:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 23:44:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 23:44:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:44:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:44:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:44:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:44:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:44:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:44:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:44:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:44:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:44:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:44:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:44:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:44:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:44:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:44:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:44:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:44:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:44:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:44:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:44:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:44:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:44:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:44:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:44:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 23:44:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 23:44:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 23:44:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 23:44:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 23:44:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 23:44:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 23:44:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 23:44:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 23:44:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 23:44:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 23:44:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 23:44:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 23:44:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 23:44:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 23:44:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:44:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 23:44:57,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:44:57,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950299935] [2022-04-05 23:44:57,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950299935] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:44:57,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489928372] [2022-04-05 23:44:57,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:44:57,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:44:57,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:44:57,827 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) [2022-04-05 23:44:57,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-04-05 23:44:57,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:44:57,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:44:57,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 85 conjunts are in the unsatisfiable core [2022-04-05 23:44:57,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:44:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 23:44:58,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:44:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-04-05 23:44:58,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489928372] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:44:58,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:44:58,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 50 [2022-04-05 23:44:58,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318034789] [2022-04-05 23:44:58,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:44:58,896 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-04-05 23:44:58,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:44:58,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-04-05 23:44:58,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=961, Invalid=1489, Unknown=0, NotChecked=0, Total=2450 [2022-04-05 23:44:58,897 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) [2022-04-05 23:44:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:44:59,840 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2022-04-05 23:44:59,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-04-05 23:44:59,841 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 [2022-04-05 23:44:59,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:44:59,842 INFO L225 Difference]: With dead ends: 350 [2022-04-05 23:44:59,842 INFO L226 Difference]: Without dead ends: 348 [2022-04-05 23:44:59,842 INFO L912 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 [2022-04-05 23:44:59,843 INFO L913 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 [2022-04-05 23:44:59,843 INFO L914 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] [2022-04-05 23:44:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-04-05 23:44:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2022-04-05 23:44:59,871 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) [2022-04-05 23:44:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2022-04-05 23:44:59,872 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 334 [2022-04-05 23:44:59,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:44:59,872 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2022-04-05 23:44:59,872 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.76) internal successors, (138), 47 states have internal predecessors, (138), 42 states have call successors, (45), 4 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-05 23:44:59,872 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2022-04-05 23:44:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-04-05 23:44:59,873 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:44:59,873 INFO L499 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:44:59,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-04-05 23:45:00,074 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:00,074 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:00,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:00,074 INFO L85 PathProgramCache]: Analyzing trace with hash -908799482, now seen corresponding path program 81 times [2022-04-05 23:45:00,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:00,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238848465] [2022-04-05 23:45:00,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:00,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:45:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-04-05 23:45:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 23:45:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:45:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:45:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:45:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:45:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:45:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:45:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:45:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:45:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:45:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:45:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:45:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:45:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:45:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:45:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:45:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:45:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:45:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:45:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:45:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:45:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:45:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:45:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:45:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 23:45:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 23:45:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 23:45:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 23:45:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 23:45:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 23:45:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 23:45:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 23:45:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 23:45:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 23:45:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 23:45:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 23:45:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 23:45:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 23:45:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 23:45:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 23:45:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-04-05 23:45:01,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:45:01,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238848465] [2022-04-05 23:45:01,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238848465] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:45:01,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491370086] [2022-04-05 23:45:01,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:45:01,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:01,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:45:01,920 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) [2022-04-05 23:45:01,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-04-05 23:45:02,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2022-04-05 23:45:02,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:45:02,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 86 conjunts are in the unsatisfiable core [2022-04-05 23:45:02,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:45:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-04-05 23:45:02,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:45:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-04-05 23:45:03,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491370086] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:45:03,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:45:03,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87, 87] total 89 [2022-04-05 23:45:03,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819880565] [2022-04-05 23:45:03,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:45:03,022 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-04-05 23:45:03,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:45:03,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-04-05 23:45:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1939, Invalid=5893, Unknown=0, NotChecked=0, Total=7832 [2022-04-05 23:45:03,023 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) [2022-04-05 23:45:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:45:05,671 INFO L93 Difference]: Finished difference Result 479 states and 522 transitions. [2022-04-05 23:45:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-04-05 23:45:05,671 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 [2022-04-05 23:45:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:45:05,672 INFO L225 Difference]: With dead ends: 479 [2022-04-05 23:45:05,672 INFO L226 Difference]: Without dead ends: 345 [2022-04-05 23:45:05,674 INFO L912 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 [2022-04-05 23:45:05,674 INFO L913 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 [2022-04-05 23:45:05,674 INFO L914 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] [2022-04-05 23:45:05,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-04-05 23:45:05,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-04-05 23:45:05,706 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) [2022-04-05 23:45:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2022-04-05 23:45:05,707 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 341 [2022-04-05 23:45:05,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:45:05,707 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2022-04-05 23:45:05,707 INFO L479 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) [2022-04-05 23:45:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2022-04-05 23:45:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-04-05 23:45:05,708 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:45:05,708 INFO L499 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:45:05,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-04-05 23:45:05,909 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-04-05 23:45:05,909 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:05,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:05,909 INFO L85 PathProgramCache]: Analyzing trace with hash -837586068, now seen corresponding path program 82 times [2022-04-05 23:45:05,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:05,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30126447] [2022-04-05 23:45:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:05,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:45:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 23:45:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:45:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:45:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:45:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:45:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:45:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:45:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:45:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:45:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:45:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:45:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:45:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:45:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:45:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:45:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:45:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:45:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:45:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:45:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:45:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:45:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:45:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:45:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:45:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:45:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:45:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 23:45:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 23:45:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 23:45:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 23:45:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 23:45:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 23:45:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 23:45:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 23:45:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 23:45:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 23:45:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 23:45:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 23:45:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 23:45:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 23:45:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 23:45:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-04-05 23:45:06,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:45:06,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30126447] [2022-04-05 23:45:06,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30126447] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:45:06,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923085879] [2022-04-05 23:45:06,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:45:06,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:06,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:45:06,729 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) [2022-04-05 23:45:06,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-04-05 23:45:06,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:45:06,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:45:06,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 87 conjunts are in the unsatisfiable core [2022-04-05 23:45:06,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:45:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-04-05 23:45:07,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:45:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2022-04-05 23:45:07,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923085879] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:45:07,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:45:07,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 51 [2022-04-05 23:45:07,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075066553] [2022-04-05 23:45:07,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:45:07,814 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-04-05 23:45:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:45:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-04-05 23:45:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=1545, Unknown=0, NotChecked=0, Total=2550 [2022-04-05 23:45:07,815 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) [2022-04-05 23:45:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:45:08,776 INFO L93 Difference]: Finished difference Result 358 states and 360 transitions. [2022-04-05 23:45:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-04-05 23:45:08,777 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 [2022-04-05 23:45:08,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:45:08,778 INFO L225 Difference]: With dead ends: 358 [2022-04-05 23:45:08,778 INFO L226 Difference]: Without dead ends: 356 [2022-04-05 23:45:08,779 INFO L912 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 [2022-04-05 23:45:08,779 INFO L913 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 [2022-04-05 23:45:08,779 INFO L914 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] [2022-04-05 23:45:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-04-05 23:45:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 352. [2022-04-05 23:45:08,828 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) [2022-04-05 23:45:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2022-04-05 23:45:08,828 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 342 [2022-04-05 23:45:08,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:45:08,829 INFO L478 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2022-04-05 23:45:08,829 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.764705882352941) internal successors, (141), 48 states have internal predecessors, (141), 43 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 23:45:08,829 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2022-04-05 23:45:08,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-04-05 23:45:08,830 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:45:08,830 INFO L499 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:45:08,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-04-05 23:45:09,031 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:09,031 INFO L403 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:09,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:09,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1041931513, now seen corresponding path program 83 times [2022-04-05 23:45:09,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:09,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801225003] [2022-04-05 23:45:09,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:09,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:45:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-04-05 23:45:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:45:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:45:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:45:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:45:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:45:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:45:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:45:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:45:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:45:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:45:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:45:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:45:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:45:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:45:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:45:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:45:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:45:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:45:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:45:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:45:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:45:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:45:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:45:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:45:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:45:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 23:45:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 23:45:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 23:45:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 23:45:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 23:45:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 23:45:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 23:45:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 23:45:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 23:45:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 23:45:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 23:45:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 23:45:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 23:45:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 23:45:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 23:45:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 23:45:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 23:45:10,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:45:10,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801225003] [2022-04-05 23:45:10,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801225003] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:45:10,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960381036] [2022-04-05 23:45:10,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:45:10,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:10,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:45:10,941 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) [2022-04-05 23:45:10,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-04-05 23:45:11,089 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2022-04-05 23:45:11,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:45:11,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 88 conjunts are in the unsatisfiable core [2022-04-05 23:45:11,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:45:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 23:45:11,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:45:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 23:45:12,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960381036] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:45:12,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:45:12,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89, 89] total 91 [2022-04-05 23:45:12,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024299396] [2022-04-05 23:45:12,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:45:12,069 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-04-05 23:45:12,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:45:12,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-04-05 23:45:12,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2028, Invalid=6162, Unknown=0, NotChecked=0, Total=8190 [2022-04-05 23:45:12,070 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) [2022-04-05 23:45:14,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:45:14,999 INFO L93 Difference]: Finished difference Result 490 states and 534 transitions. [2022-04-05 23:45:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-04-05 23:45:14,999 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 [2022-04-05 23:45:15,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:45:15,000 INFO L225 Difference]: With dead ends: 490 [2022-04-05 23:45:15,001 INFO L226 Difference]: Without dead ends: 353 [2022-04-05 23:45:15,002 INFO L912 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 [2022-04-05 23:45:15,002 INFO L913 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 [2022-04-05 23:45:15,003 INFO L914 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] [2022-04-05 23:45:15,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-04-05 23:45:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2022-04-05 23:45:15,043 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) [2022-04-05 23:45:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2022-04-05 23:45:15,043 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 349 [2022-04-05 23:45:15,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:45:15,043 INFO L478 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2022-04-05 23:45:15,044 INFO L479 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) [2022-04-05 23:45:15,044 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2022-04-05 23:45:15,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-04-05 23:45:15,045 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:45:15,045 INFO L499 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:45:15,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-04-05 23:45:15,246 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:15,246 INFO L403 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:15,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:15,246 INFO L85 PathProgramCache]: Analyzing trace with hash -986235283, now seen corresponding path program 84 times [2022-04-05 23:45:15,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:15,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516139128] [2022-04-05 23:45:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:15,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:45:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 23:45:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:45:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:45:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:45:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:45:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:45:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:45:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:45:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:45:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:45:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:45:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:45:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:45:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:45:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:45:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:45:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:45:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:45:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:45:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:45:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:45:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:45:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:45:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:45:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:45:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:45:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:45:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 23:45:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 23:45:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 23:45:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 23:45:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 23:45:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 23:45:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 23:45:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 23:45:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 23:45:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 23:45:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 23:45:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 23:45:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 23:45:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 23:45:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 23:45:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 23:45:16,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:45:16,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516139128] [2022-04-05 23:45:16,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516139128] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:45:16,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604909909] [2022-04-05 23:45:16,108 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:45:16,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:16,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:45:16,112 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) [2022-04-05 23:45:16,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-04-05 23:45:16,269 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2022-04-05 23:45:16,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:45:16,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 89 conjunts are in the unsatisfiable core [2022-04-05 23:45:16,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:45:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 23:45:16,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:45:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-04-05 23:45:17,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604909909] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:45:17,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:45:17,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 52 [2022-04-05 23:45:17,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740474658] [2022-04-05 23:45:17,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:45:17,267 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-04-05 23:45:17,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:45:17,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-04-05 23:45:17,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1050, Invalid=1602, Unknown=0, NotChecked=0, Total=2652 [2022-04-05 23:45:17,268 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) [2022-04-05 23:45:18,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:45:18,257 INFO L93 Difference]: Finished difference Result 366 states and 368 transitions. [2022-04-05 23:45:18,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-04-05 23:45:18,257 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 [2022-04-05 23:45:18,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:45:18,258 INFO L225 Difference]: With dead ends: 366 [2022-04-05 23:45:18,259 INFO L226 Difference]: Without dead ends: 364 [2022-04-05 23:45:18,259 INFO L912 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 [2022-04-05 23:45:18,259 INFO L913 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 [2022-04-05 23:45:18,260 INFO L914 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] [2022-04-05 23:45:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-04-05 23:45:18,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 360. [2022-04-05 23:45:18,292 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) [2022-04-05 23:45:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2022-04-05 23:45:18,293 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 350 [2022-04-05 23:45:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:45:18,293 INFO L478 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2022-04-05 23:45:18,294 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.769230769230769) internal successors, (144), 49 states have internal predecessors, (144), 44 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-04-05 23:45:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2022-04-05 23:45:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-04-05 23:45:18,295 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:45:18,295 INFO L499 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:45:18,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-04-05 23:45:18,495 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:18,496 INFO L403 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:18,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:18,496 INFO L85 PathProgramCache]: Analyzing trace with hash 64513254, now seen corresponding path program 85 times [2022-04-05 23:45:18,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:18,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244843778] [2022-04-05 23:45:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:18,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:45:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-04-05 23:45:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:45:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:45:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:45:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:45:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:45:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:45:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:45:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:45:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:45:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:45:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:45:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:45:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:45:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:45:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:45:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:45:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:45:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:45:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:45:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:45:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:45:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:45:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:45:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:45:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:45:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:45:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 23:45:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 23:45:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 23:45:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 23:45:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 23:45:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 23:45:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 23:45:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 23:45:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 23:45:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 23:45:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 23:45:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 23:45:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 23:45:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 23:45:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 23:45:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 23:45:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 23:45:20,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:45:20,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244843778] [2022-04-05 23:45:20,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244843778] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:45:20,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357680337] [2022-04-05 23:45:20,495 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:45:20,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:20,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:45:20,496 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) [2022-04-05 23:45:20,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-04-05 23:45:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:20,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 90 conjunts are in the unsatisfiable core [2022-04-05 23:45:20,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:45:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 23:45:21,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:45:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 23:45:21,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357680337] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:45:21,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:45:21,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91, 91] total 93 [2022-04-05 23:45:21,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139194268] [2022-04-05 23:45:21,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:45:21,596 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-04-05 23:45:21,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:45:21,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-04-05 23:45:21,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2119, Invalid=6437, Unknown=0, NotChecked=0, Total=8556 [2022-04-05 23:45:21,596 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) [2022-04-05 23:45:24,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:45:24,324 INFO L93 Difference]: Finished difference Result 501 states and 546 transitions. [2022-04-05 23:45:24,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-04-05 23:45:24,324 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 [2022-04-05 23:45:24,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:45:24,325 INFO L225 Difference]: With dead ends: 501 [2022-04-05 23:45:24,325 INFO L226 Difference]: Without dead ends: 361 [2022-04-05 23:45:24,327 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 800 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7999 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6438, Invalid=26504, Unknown=0, NotChecked=0, Total=32942 [2022-04-05 23:45:24,327 INFO L913 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 [2022-04-05 23:45:24,327 INFO L914 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] [2022-04-05 23:45:24,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-04-05 23:45:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2022-04-05 23:45:24,359 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) [2022-04-05 23:45:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2022-04-05 23:45:24,360 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 357 [2022-04-05 23:45:24,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:45:24,360 INFO L478 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2022-04-05 23:45:24,360 INFO L479 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) [2022-04-05 23:45:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2022-04-05 23:45:24,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-04-05 23:45:24,362 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:45:24,362 INFO L499 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:45:24,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-04-05 23:45:24,577 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:24,577 INFO L403 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:24,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:24,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1000113588, now seen corresponding path program 86 times [2022-04-05 23:45:24,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:24,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375189847] [2022-04-05 23:45:24,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:24,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:45:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 23:45:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:45:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:45:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:45:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:45:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:45:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:45:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:45:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:45:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:45:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:45:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:45:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:45:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:45:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:45:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:45:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:45:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:45:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:45:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:45:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:45:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:45:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:45:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:45:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:45:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:45:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:45:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:45:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 23:45:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 23:45:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 23:45:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 23:45:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 23:45:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 23:45:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 23:45:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 23:45:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 23:45:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 23:45:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 23:45:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 23:45:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 23:45:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 23:45:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 23:45:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1032 proven. 2839 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 23:45:25,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:45:25,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375189847] [2022-04-05 23:45:25,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375189847] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:45:25,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241314037] [2022-04-05 23:45:25,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:45:25,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:25,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:45:25,471 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) [2022-04-05 23:45:25,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-04-05 23:45:25,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:45:25,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:45:25,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 91 conjunts are in the unsatisfiable core [2022-04-05 23:45:25,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:45:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 23:45:26,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:45:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-04-05 23:45:26,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241314037] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:45:26,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:45:26,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 53 [2022-04-05 23:45:26,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18638034] [2022-04-05 23:45:26,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:45:26,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-04-05 23:45:26,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:45:26,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-04-05 23:45:26,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1096, Invalid=1660, Unknown=0, NotChecked=0, Total=2756 [2022-04-05 23:45:26,604 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) [2022-04-05 23:45:27,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:45:27,629 INFO L93 Difference]: Finished difference Result 374 states and 376 transitions. [2022-04-05 23:45:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-04-05 23:45:27,629 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 [2022-04-05 23:45:27,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:45:27,630 INFO L225 Difference]: With dead ends: 374 [2022-04-05 23:45:27,630 INFO L226 Difference]: Without dead ends: 372 [2022-04-05 23:45:27,631 INFO L912 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 [2022-04-05 23:45:27,631 INFO L913 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 [2022-04-05 23:45:27,631 INFO L914 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] [2022-04-05 23:45:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-04-05 23:45:27,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 368. [2022-04-05 23:45:27,664 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) [2022-04-05 23:45:27,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 369 transitions. [2022-04-05 23:45:27,664 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 369 transitions. Word has length 358 [2022-04-05 23:45:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:45:27,664 INFO L478 AbstractCegarLoop]: Abstraction has 368 states and 369 transitions. [2022-04-05 23:45:27,665 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.7735849056603774) internal successors, (147), 50 states have internal predecessors, (147), 45 states have call successors, (48), 4 states have call predecessors, (48), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-04-05 23:45:27,665 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 369 transitions. [2022-04-05 23:45:27,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-04-05 23:45:27,666 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:45:27,666 INFO L499 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:45:27,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-04-05 23:45:27,866 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:27,867 INFO L403 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:27,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:27,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1034543143, now seen corresponding path program 87 times [2022-04-05 23:45:27,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:27,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533770409] [2022-04-05 23:45:27,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:27,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:45:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-04-05 23:45:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:45:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:45:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:45:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:45:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:45:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:45:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:45:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:45:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:45:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:45:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:45:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:45:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:45:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:45:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:45:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:45:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:45:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:45:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:45:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:45:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:45:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:45:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:45:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:45:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:45:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:45:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:45:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 23:45:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 23:45:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 23:45:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 23:45:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 23:45:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 23:45:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 23:45:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 23:45:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 23:45:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 23:45:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 23:45:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 23:45:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 23:45:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 23:45:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 23:45:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 23:45:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 23:45:29,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:45:29,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533770409] [2022-04-05 23:45:29,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533770409] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:45:29,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318462349] [2022-04-05 23:45:29,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:45:29,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:29,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:45:29,949 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) [2022-04-05 23:45:29,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-04-05 23:45:30,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2022-04-05 23:45:30,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:45:30,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 92 conjunts are in the unsatisfiable core [2022-04-05 23:45:30,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:45:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 23:45:30,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:45:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 23:45:31,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318462349] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:45:31,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:45:31,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93, 93] total 95 [2022-04-05 23:45:31,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289194443] [2022-04-05 23:45:31,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:45:31,138 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-04-05 23:45:31,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:45:31,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-04-05 23:45:31,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2212, Invalid=6718, Unknown=0, NotChecked=0, Total=8930 [2022-04-05 23:45:31,139 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) [2022-04-05 23:45:34,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:45:34,076 INFO L93 Difference]: Finished difference Result 512 states and 558 transitions. [2022-04-05 23:45:34,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-04-05 23:45:34,076 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 [2022-04-05 23:45:34,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:45:34,078 INFO L225 Difference]: With dead ends: 512 [2022-04-05 23:45:34,078 INFO L226 Difference]: Without dead ends: 369 [2022-04-05 23:45:34,080 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1003 GetRequests, 818 SyntacticMatches, 1 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8361 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=6719, Invalid=27691, Unknown=0, NotChecked=0, Total=34410 [2022-04-05 23:45:34,080 INFO L913 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 [2022-04-05 23:45:34,080 INFO L914 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] [2022-04-05 23:45:34,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-04-05 23:45:34,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2022-04-05 23:45:34,120 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) [2022-04-05 23:45:34,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2022-04-05 23:45:34,120 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 365 [2022-04-05 23:45:34,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:45:34,121 INFO L478 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2022-04-05 23:45:34,121 INFO L479 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) [2022-04-05 23:45:34,121 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2022-04-05 23:45:34,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-04-05 23:45:34,123 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:45:34,123 INFO L499 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:45:34,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-04-05 23:45:34,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-04-05 23:45:34,339 INFO L403 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:34,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash -208392307, now seen corresponding path program 88 times [2022-04-05 23:45:34,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:34,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825943249] [2022-04-05 23:45:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:34,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:45:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 23:45:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:45:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:45:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:45:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:45:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:45:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:45:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:45:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:45:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:45:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:45:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:45:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:45:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:45:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:45:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:45:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:45:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:45:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:45:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:45:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:45:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:45:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:45:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:45:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:45:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:45:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:45:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:45:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:45:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 23:45:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 23:45:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 23:45:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 23:45:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 23:45:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 23:45:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 23:45:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 23:45:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 23:45:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 23:45:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 23:45:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 23:45:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 23:45:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 23:45:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 23:45:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1078 proven. 2971 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 23:45:35,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:45:35,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825943249] [2022-04-05 23:45:35,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825943249] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:45:35,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818383757] [2022-04-05 23:45:35,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:45:35,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:35,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:45:35,269 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) [2022-04-05 23:45:35,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-04-05 23:45:35,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:45:35,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:45:35,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 93 conjunts are in the unsatisfiable core [2022-04-05 23:45:35,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:45:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 23:45:35,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:45:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-04-05 23:45:36,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818383757] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:45:36,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:45:36,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 54 [2022-04-05 23:45:36,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598846631] [2022-04-05 23:45:36,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:45:36,424 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-04-05 23:45:36,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:45:36,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-04-05 23:45:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1143, Invalid=1719, Unknown=0, NotChecked=0, Total=2862 [2022-04-05 23:45:36,425 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) [2022-04-05 23:45:37,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:45:37,510 INFO L93 Difference]: Finished difference Result 382 states and 384 transitions. [2022-04-05 23:45:37,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-04-05 23:45:37,510 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 [2022-04-05 23:45:37,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:45:37,511 INFO L225 Difference]: With dead ends: 382 [2022-04-05 23:45:37,511 INFO L226 Difference]: Without dead ends: 380 [2022-04-05 23:45:37,512 INFO L912 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 [2022-04-05 23:45:37,512 INFO L913 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 [2022-04-05 23:45:37,512 INFO L914 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] [2022-04-05 23:45:37,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-04-05 23:45:37,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2022-04-05 23:45:37,558 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) [2022-04-05 23:45:37,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2022-04-05 23:45:37,558 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 366 [2022-04-05 23:45:37,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:45:37,559 INFO L478 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2022-04-05 23:45:37,559 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.7777777777777777) internal successors, (150), 51 states have internal predecessors, (150), 46 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-04-05 23:45:37,559 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2022-04-05 23:45:37,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-04-05 23:45:37,560 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:45:37,560 INFO L499 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:45:37,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-04-05 23:45:37,761 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-04-05 23:45:37,761 INFO L403 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:37,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:37,761 INFO L85 PathProgramCache]: Analyzing trace with hash 761262022, now seen corresponding path program 89 times [2022-04-05 23:45:37,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:37,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428007368] [2022-04-05 23:45:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:37,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:45:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-04-05 23:45:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:45:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:45:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:45:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:45:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:45:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:45:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:45:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:45:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:45:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:45:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:45:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:45:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:45:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:45:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:45:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:45:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:45:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:45:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:45:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:45:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:45:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:45:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:45:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:45:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:45:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:45:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:45:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:45:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 23:45:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 23:45:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 23:45:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 23:45:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 23:45:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 23:45:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 23:45:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 23:45:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 23:45:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 23:45:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 23:45:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 23:45:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 23:45:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 23:45:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 23:45:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 23:45:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 23:45:39,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:45:39,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428007368] [2022-04-05 23:45:39,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428007368] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:45:39,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470558201] [2022-04-05 23:45:39,952 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:45:39,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:39,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:45:39,953 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) [2022-04-05 23:45:39,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-04-05 23:45:40,115 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2022-04-05 23:45:40,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:45:40,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 94 conjunts are in the unsatisfiable core [2022-04-05 23:45:40,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:45:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 23:45:40,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:45:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 23:45:41,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470558201] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:45:41,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:45:41,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95, 95] total 97 [2022-04-05 23:45:41,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671430322] [2022-04-05 23:45:41,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:45:41,169 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-04-05 23:45:41,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:45:41,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-04-05 23:45:41,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=7005, Unknown=0, NotChecked=0, Total=9312 [2022-04-05 23:45:41,170 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) [2022-04-05 23:45:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:45:44,205 INFO L93 Difference]: Finished difference Result 523 states and 570 transitions. [2022-04-05 23:45:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-04-05 23:45:44,206 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 [2022-04-05 23:45:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:45:44,207 INFO L225 Difference]: With dead ends: 523 [2022-04-05 23:45:44,207 INFO L226 Difference]: Without dead ends: 377 [2022-04-05 23:45:44,209 INFO L912 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 [2022-04-05 23:45:44,209 INFO L913 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 [2022-04-05 23:45:44,209 INFO L914 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] [2022-04-05 23:45:44,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-04-05 23:45:44,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-04-05 23:45:44,244 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) [2022-04-05 23:45:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2022-04-05 23:45:44,244 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 373 [2022-04-05 23:45:44,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:45:44,244 INFO L478 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2022-04-05 23:45:44,244 INFO L479 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) [2022-04-05 23:45:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2022-04-05 23:45:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-04-05 23:45:44,246 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:45:44,246 INFO L499 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:45:44,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-04-05 23:45:44,446 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:44,447 INFO L403 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1966114516, now seen corresponding path program 90 times [2022-04-05 23:45:44,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:44,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080704415] [2022-04-05 23:45:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:44,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:45:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 23:45:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:45:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:45:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:45:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:45:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:45:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:45:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:45:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:45:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:45:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:45:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:45:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:45:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:45:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:45:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:45:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:45:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:45:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:45:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:45:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:45:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:45:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:45:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:45:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:45:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:45:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:45:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:45:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:45:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 23:45:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 23:45:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 23:45:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 23:45:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 23:45:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 23:45:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 23:45:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 23:45:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 23:45:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 23:45:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 23:45:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 23:45:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 23:45:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 23:45:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 23:45:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 23:45:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:45,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1125 proven. 3106 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 23:45:45,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:45:45,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080704415] [2022-04-05 23:45:45,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080704415] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:45:45,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13875854] [2022-04-05 23:45:45,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:45:45,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:45,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:45:45,405 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) [2022-04-05 23:45:45,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-04-05 23:45:45,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2022-04-05 23:45:45,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:45:45,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 95 conjunts are in the unsatisfiable core [2022-04-05 23:45:45,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:45:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 23:45:46,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:45:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-04-05 23:45:46,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13875854] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:45:46,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:45:46,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 55 [2022-04-05 23:45:46,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779993495] [2022-04-05 23:45:46,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:45:46,650 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-04-05 23:45:46,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:45:46,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-04-05 23:45:46,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=1779, Unknown=0, NotChecked=0, Total=2970 [2022-04-05 23:45:46,651 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) [2022-04-05 23:45:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:45:47,801 INFO L93 Difference]: Finished difference Result 390 states and 392 transitions. [2022-04-05 23:45:47,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-04-05 23:45:47,801 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 [2022-04-05 23:45:47,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:45:47,803 INFO L225 Difference]: With dead ends: 390 [2022-04-05 23:45:47,803 INFO L226 Difference]: Without dead ends: 388 [2022-04-05 23:45:47,803 INFO L912 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 [2022-04-05 23:45:47,804 INFO L913 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 [2022-04-05 23:45:47,804 INFO L914 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] [2022-04-05 23:45:47,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-04-05 23:45:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 384. [2022-04-05 23:45:47,839 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) [2022-04-05 23:45:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2022-04-05 23:45:47,839 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 374 [2022-04-05 23:45:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:45:47,840 INFO L478 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2022-04-05 23:45:47,840 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.7818181818181817) internal successors, (153), 52 states have internal predecessors, (153), 47 states have call successors, (50), 4 states have call predecessors, (50), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-04-05 23:45:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2022-04-05 23:45:47,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-04-05 23:45:47,841 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:45:47,841 INFO L499 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:45:47,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-04-05 23:45:48,042 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:48,042 INFO L403 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:48,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:48,042 INFO L85 PathProgramCache]: Analyzing trace with hash -932485817, now seen corresponding path program 91 times [2022-04-05 23:45:48,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:48,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020075376] [2022-04-05 23:45:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:48,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:45:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-04-05 23:45:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:45:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:45:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:45:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:45:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:45:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:45:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:45:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:45:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:45:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:45:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:45:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:45:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:45:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:45:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:45:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:45:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:45:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:45:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:45:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:45:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:45:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:45:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:45:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:45:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:45:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:45:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:45:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:45:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 23:45:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 23:45:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 23:45:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 23:45:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 23:45:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 23:45:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 23:45:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 23:45:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 23:45:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 23:45:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 23:45:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 23:45:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 23:45:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 23:45:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 23:45:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 23:45:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 23:45:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-04-05 23:45:50,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:45:50,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020075376] [2022-04-05 23:45:50,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020075376] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:45:50,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905659849] [2022-04-05 23:45:50,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:45:50,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:50,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:45:50,343 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) [2022-04-05 23:45:50,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-04-05 23:45:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:50,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 96 conjunts are in the unsatisfiable core [2022-04-05 23:45:50,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:45:50,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-04-05 23:45:50,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:45:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-04-05 23:45:51,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905659849] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:45:51,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:45:51,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97, 97] total 99 [2022-04-05 23:45:51,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197581066] [2022-04-05 23:45:51,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:45:51,554 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-04-05 23:45:51,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:45:51,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-04-05 23:45:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2404, Invalid=7298, Unknown=0, NotChecked=0, Total=9702 [2022-04-05 23:45:51,555 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) [2022-04-05 23:45:54,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:45:54,947 INFO L93 Difference]: Finished difference Result 534 states and 582 transitions. [2022-04-05 23:45:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-04-05 23:45:54,947 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 [2022-04-05 23:45:54,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:45:54,948 INFO L225 Difference]: With dead ends: 534 [2022-04-05 23:45:54,948 INFO L226 Difference]: Without dead ends: 385 [2022-04-05 23:45:54,950 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 854 SyntacticMatches, 1 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9109 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=7299, Invalid=30143, Unknown=0, NotChecked=0, Total=37442 [2022-04-05 23:45:54,950 INFO L913 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, 0.9s IncrementalHoareTripleChecker+Time [2022-04-05 23:45:54,951 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 134 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-05 23:45:54,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-04-05 23:45:54,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2022-04-05 23:45:54,987 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) [2022-04-05 23:45:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 386 transitions. [2022-04-05 23:45:54,988 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 386 transitions. Word has length 381 [2022-04-05 23:45:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:45:54,988 INFO L478 AbstractCegarLoop]: Abstraction has 385 states and 386 transitions. [2022-04-05 23:45:54,988 INFO L479 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) [2022-04-05 23:45:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 386 transitions. [2022-04-05 23:45:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-04-05 23:45:54,990 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:45:54,990 INFO L499 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:45:55,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-04-05 23:45:55,197 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:55,198 INFO L403 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:55,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash -108648275, now seen corresponding path program 92 times [2022-04-05 23:45:55,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:55,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514353573] [2022-04-05 23:45:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:55,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:45:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 23:45:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:45:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:45:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:45:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:45:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:45:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:45:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:45:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:45:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:45:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:45:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:45:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:45:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:45:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:45:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:45:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:45:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:45:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:45:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:45:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:45:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:45:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:45:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 23:45:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 23:45:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 23:45:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 23:45:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 23:45:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 23:45:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 23:45:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 23:45:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 23:45:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 23:45:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 23:45:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 23:45:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 23:45:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 23:45:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 23:45:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 23:45:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 23:45:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 23:45:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 23:45:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 23:45:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 23:45:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 23:45:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 23:45:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:45:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1173 proven. 3244 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-04-05 23:45:56,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:45:56,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514353573] [2022-04-05 23:45:56,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514353573] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:45:56,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067886464] [2022-04-05 23:45:56,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:45:56,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:56,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:45:56,181 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) [2022-04-05 23:45:56,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-04-05 23:45:56,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:45:56,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:45:56,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 97 conjunts are in the unsatisfiable core [2022-04-05 23:45:56,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:45:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-04-05 23:45:56,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:45:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2022-04-05 23:45:57,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067886464] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:45:57,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:45:57,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 52] total 56 [2022-04-05 23:45:57,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503999934] [2022-04-05 23:45:57,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:45:57,383 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-04-05 23:45:57,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:45:57,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-04-05 23:45:57,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1240, Invalid=1840, Unknown=0, NotChecked=0, Total=3080 [2022-04-05 23:45:57,383 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) [2022-04-05 23:45:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:45:58,558 INFO L93 Difference]: Finished difference Result 398 states and 400 transitions. [2022-04-05 23:45:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-04-05 23:45:58,559 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 [2022-04-05 23:45:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:45:58,560 INFO L225 Difference]: With dead ends: 398 [2022-04-05 23:45:58,560 INFO L226 Difference]: Without dead ends: 396 [2022-04-05 23:45:58,561 INFO L912 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 [2022-04-05 23:45:58,561 INFO L913 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 [2022-04-05 23:45:58,561 INFO L914 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] [2022-04-05 23:45:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-04-05 23:45:58,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 392. [2022-04-05 23:45:58,598 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) [2022-04-05 23:45:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2022-04-05 23:45:58,599 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 382 [2022-04-05 23:45:58,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:45:58,599 INFO L478 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2022-04-05 23:45:58,599 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 53 states have internal predecessors, (156), 48 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-04-05 23:45:58,599 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2022-04-05 23:45:58,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-04-05 23:45:58,601 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:45:58,601 INFO L499 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:45:58,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-04-05 23:45:58,801 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:45:58,801 INFO L403 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:45:58,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:45:58,802 INFO L85 PathProgramCache]: Analyzing trace with hash -954633562, now seen corresponding path program 93 times [2022-04-05 23:45:58,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:45:58,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073069534] [2022-04-05 23:45:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:45:58,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:45:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:46:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-04-05 23:46:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:46:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:46:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:46:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:46:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:46:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:46:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:46:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:46:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:46:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:46:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:46:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:46:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:46:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:46:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:46:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:46:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:46:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:46:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:46:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:46:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:46:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:46:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 23:46:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 23:46:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 23:46:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 23:46:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 23:46:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 23:46:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 23:46:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 23:46:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 23:46:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 23:46:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 23:46:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 23:46:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 23:46:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 23:46:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 23:46:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 23:46:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 23:46:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 23:46:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 23:46:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 23:46:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 23:46:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 23:46:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 23:46:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 23:46:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 23:46:01,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:46:01,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073069534] [2022-04-05 23:46:01,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073069534] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:46:01,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059017294] [2022-04-05 23:46:01,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:46:01,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:01,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:46:01,160 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) [2022-04-05 23:46:01,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-04-05 23:46:01,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2022-04-05 23:46:01,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:46:01,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 98 conjunts are in the unsatisfiable core [2022-04-05 23:46:01,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:46:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 23:46:01,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:46:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 23:46:02,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059017294] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:46:02,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:46:02,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99, 99] total 101 [2022-04-05 23:46:02,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132323849] [2022-04-05 23:46:02,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:46:02,447 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-04-05 23:46:02,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:46:02,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-04-05 23:46:02,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2503, Invalid=7597, Unknown=0, NotChecked=0, Total=10100 [2022-04-05 23:46:02,448 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) [2022-04-05 23:46:05,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:46:05,782 INFO L93 Difference]: Finished difference Result 545 states and 594 transitions. [2022-04-05 23:46:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-04-05 23:46:05,783 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 [2022-04-05 23:46:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:46:05,785 INFO L225 Difference]: With dead ends: 545 [2022-04-05 23:46:05,785 INFO L226 Difference]: Without dead ends: 393 [2022-04-05 23:46:05,788 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 872 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9495 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=7598, Invalid=31408, Unknown=0, NotChecked=0, Total=39006 [2022-04-05 23:46:05,788 INFO L913 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 [2022-04-05 23:46:05,788 INFO L914 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] [2022-04-05 23:46:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-04-05 23:46:05,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-04-05 23:46:05,830 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) [2022-04-05 23:46:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 394 transitions. [2022-04-05 23:46:05,830 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 394 transitions. Word has length 389 [2022-04-05 23:46:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:46:05,830 INFO L478 AbstractCegarLoop]: Abstraction has 393 states and 394 transitions. [2022-04-05 23:46:05,831 INFO L479 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) [2022-04-05 23:46:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 394 transitions. [2022-04-05 23:46:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-04-05 23:46:05,832 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:46:05,832 INFO L499 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:46:05,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-04-05 23:46:06,032 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:06,033 INFO L403 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:46:06,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:46:06,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1912958988, now seen corresponding path program 94 times [2022-04-05 23:46:06,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:46:06,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558580568] [2022-04-05 23:46:06,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:46:06,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:46:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:46:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 23:46:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:06,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:46:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:46:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:06,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:46:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:06,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:46:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:06,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:46:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:46:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:46:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:46:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:46:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:46:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:46:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:46:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:46:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:46:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:46:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:46:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:46:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:46:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:46:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:46:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:46:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:46:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:46:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 23:46:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 23:46:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 23:46:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 23:46:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 23:46:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 23:46:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 23:46:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 23:46:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 23:46:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 23:46:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 23:46:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 23:46:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 23:46:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 23:46:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 23:46:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 23:46:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 23:46:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 23:46:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 23:46:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 23:46:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 23:46:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 23:46:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 23:46:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1222 proven. 3385 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 23:46:07,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:46:07,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558580568] [2022-04-05 23:46:07,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558580568] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:46:07,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470925350] [2022-04-05 23:46:07,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:46:07,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:07,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:46:07,052 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) [2022-04-05 23:46:07,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-04-05 23:46:07,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:46:07,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:46:07,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 99 conjunts are in the unsatisfiable core [2022-04-05 23:46:07,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:46:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 23:46:07,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:46:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-04-05 23:46:08,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470925350] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:46:08,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:46:08,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 57 [2022-04-05 23:46:08,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587871207] [2022-04-05 23:46:08,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:46:08,298 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-04-05 23:46:08,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:46:08,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-04-05 23:46:08,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1290, Invalid=1902, Unknown=0, NotChecked=0, Total=3192 [2022-04-05 23:46:08,299 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) [2022-04-05 23:46:09,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:46:09,501 INFO L93 Difference]: Finished difference Result 406 states and 408 transitions. [2022-04-05 23:46:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-04-05 23:46:09,502 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 [2022-04-05 23:46:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:46:09,503 INFO L225 Difference]: With dead ends: 406 [2022-04-05 23:46:09,503 INFO L226 Difference]: Without dead ends: 404 [2022-04-05 23:46:09,504 INFO L912 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 [2022-04-05 23:46:09,505 INFO L913 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 [2022-04-05 23:46:09,505 INFO L914 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] [2022-04-05 23:46:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-04-05 23:46:09,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 400. [2022-04-05 23:46:09,551 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) [2022-04-05 23:46:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 401 transitions. [2022-04-05 23:46:09,551 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 401 transitions. Word has length 390 [2022-04-05 23:46:09,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:46:09,552 INFO L478 AbstractCegarLoop]: Abstraction has 400 states and 401 transitions. [2022-04-05 23:46:09,552 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.789473684210526) internal successors, (159), 54 states have internal predecessors, (159), 49 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-04-05 23:46:09,552 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 401 transitions. [2022-04-05 23:46:09,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-04-05 23:46:09,554 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:46:09,554 INFO L499 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:46:09,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-04-05 23:46:09,767 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-04-05 23:46:09,767 INFO L403 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:46:09,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:46:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1849953689, now seen corresponding path program 95 times [2022-04-05 23:46:09,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:46:09,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5031186] [2022-04-05 23:46:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:46:09,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:46:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:46:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 23:46:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:46:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:46:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:46:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:46:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:46:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:46:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:46:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:46:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:46:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:46:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:46:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:46:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:46:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:46:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:46:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:46:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:46:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:46:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:46:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:46:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:46:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:46:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:46:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 23:46:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 23:46:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 23:46:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 23:46:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 23:46:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 23:46:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 23:46:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 23:46:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 23:46:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 23:46:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 23:46:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 23:46:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 23:46:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 23:46:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 23:46:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 23:46:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 23:46:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 23:46:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 23:46:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 23:46:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 23:46:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 23:46:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 23:46:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 23:46:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 23:46:12,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:46:12,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5031186] [2022-04-05 23:46:12,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5031186] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:46:12,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751733966] [2022-04-05 23:46:12,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:46:12,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:12,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:46:12,197 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) [2022-04-05 23:46:12,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-04-05 23:46:12,370 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2022-04-05 23:46:12,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:46:12,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 100 conjunts are in the unsatisfiable core [2022-04-05 23:46:12,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:46:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 23:46:12,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:46:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 23:46:13,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751733966] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:46:13,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:46:13,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 101] total 103 [2022-04-05 23:46:13,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438514624] [2022-04-05 23:46:13,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:46:13,490 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-04-05 23:46:13,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:46:13,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-04-05 23:46:13,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2604, Invalid=7902, Unknown=0, NotChecked=0, Total=10506 [2022-04-05 23:46:13,491 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) [2022-04-05 23:46:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:46:16,825 INFO L93 Difference]: Finished difference Result 556 states and 606 transitions. [2022-04-05 23:46:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-04-05 23:46:16,826 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 [2022-04-05 23:46:16,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:46:16,827 INFO L225 Difference]: With dead ends: 556 [2022-04-05 23:46:16,827 INFO L226 Difference]: Without dead ends: 401 [2022-04-05 23:46:16,830 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1091 GetRequests, 890 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9889 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7903, Invalid=32699, Unknown=0, NotChecked=0, Total=40602 [2022-04-05 23:46:16,830 INFO L913 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 [2022-04-05 23:46:16,830 INFO L914 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] [2022-04-05 23:46:16,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-04-05 23:46:16,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-04-05 23:46:16,869 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) [2022-04-05 23:46:16,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2022-04-05 23:46:16,870 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 397 [2022-04-05 23:46:16,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:46:16,870 INFO L478 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2022-04-05 23:46:16,870 INFO L479 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) [2022-04-05 23:46:16,870 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2022-04-05 23:46:16,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-04-05 23:46:16,872 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:46:16,872 INFO L499 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:46:16,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-04-05 23:46:17,072 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:17,072 INFO L403 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:46:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:46:17,073 INFO L85 PathProgramCache]: Analyzing trace with hash -694212147, now seen corresponding path program 96 times [2022-04-05 23:46:17,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:46:17,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208564213] [2022-04-05 23:46:17,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:46:17,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:46:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:46:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:46:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:46:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:46:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:46:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:46:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:46:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:46:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:46:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:46:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:46:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:46:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:46:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:46:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:46:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:46:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:46:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:46:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:46:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:46:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:46:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:46:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:46:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:46:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:46:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:46:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 23:46:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 23:46:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 23:46:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 23:46:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 23:46:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 23:46:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 23:46:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 23:46:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 23:46:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 23:46:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 23:46:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 23:46:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 23:46:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 23:46:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 23:46:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 23:46:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 23:46:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 23:46:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 23:46:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 23:46:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 23:46:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 23:46:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 23:46:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1272 proven. 3529 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 23:46:18,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:46:18,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208564213] [2022-04-05 23:46:18,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208564213] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:46:18,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941006624] [2022-04-05 23:46:18,119 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:46:18,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:18,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:46:18,120 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) [2022-04-05 23:46:18,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-04-05 23:46:18,317 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2022-04-05 23:46:18,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:46:18,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 101 conjunts are in the unsatisfiable core [2022-04-05 23:46:18,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:46:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 23:46:18,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:46:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-04-05 23:46:19,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941006624] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:46:19,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:46:19,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 58 [2022-04-05 23:46:19,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181324649] [2022-04-05 23:46:19,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:46:19,456 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-04-05 23:46:19,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:46:19,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-04-05 23:46:19,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1341, Invalid=1965, Unknown=0, NotChecked=0, Total=3306 [2022-04-05 23:46:19,457 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) [2022-04-05 23:46:20,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:46:20,729 INFO L93 Difference]: Finished difference Result 414 states and 416 transitions. [2022-04-05 23:46:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-04-05 23:46:20,730 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 [2022-04-05 23:46:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:46:20,731 INFO L225 Difference]: With dead ends: 414 [2022-04-05 23:46:20,731 INFO L226 Difference]: Without dead ends: 412 [2022-04-05 23:46:20,732 INFO L912 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 [2022-04-05 23:46:20,732 INFO L913 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 [2022-04-05 23:46:20,732 INFO L914 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] [2022-04-05 23:46:20,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-04-05 23:46:20,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 408. [2022-04-05 23:46:20,771 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) [2022-04-05 23:46:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 409 transitions. [2022-04-05 23:46:20,772 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 409 transitions. Word has length 398 [2022-04-05 23:46:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:46:20,772 INFO L478 AbstractCegarLoop]: Abstraction has 408 states and 409 transitions. [2022-04-05 23:46:20,772 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.793103448275862) internal successors, (162), 55 states have internal predecessors, (162), 50 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-05 23:46:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 409 transitions. [2022-04-05 23:46:20,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-04-05 23:46:20,773 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:46:20,774 INFO L499 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:46:20,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-04-05 23:46:20,974 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:20,974 INFO L403 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:46:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:46:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1993151098, now seen corresponding path program 97 times [2022-04-05 23:46:20,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:46:20,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968115788] [2022-04-05 23:46:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:46:20,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:46:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:46:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-04-05 23:46:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:46:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:46:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:46:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:46:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:46:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:46:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:46:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:46:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:46:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:46:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:46:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:46:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:46:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:46:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:46:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:46:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:46:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:46:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:46:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:46:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:46:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:46:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:46:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:46:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 23:46:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 23:46:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 23:46:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 23:46:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 23:46:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 23:46:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 23:46:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 23:46:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 23:46:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 23:46:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 23:46:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 23:46:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 23:46:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 23:46:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 23:46:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 23:46:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 23:46:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 23:46:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 23:46:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 23:46:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 23:46:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 23:46:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 23:46:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 23:46:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 23:46:23,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:46:23,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968115788] [2022-04-05 23:46:23,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968115788] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:46:23,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549714945] [2022-04-05 23:46:23,545 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:46:23,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:23,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:46:23,546 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) [2022-04-05 23:46:23,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-04-05 23:46:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:23,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 102 conjunts are in the unsatisfiable core [2022-04-05 23:46:23,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:46:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 23:46:24,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:46:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 23:46:24,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549714945] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:46:24,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:46:24,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103, 103] total 105 [2022-04-05 23:46:24,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903789028] [2022-04-05 23:46:24,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:46:24,850 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-04-05 23:46:24,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:46:24,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-04-05 23:46:24,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=8213, Unknown=0, NotChecked=0, Total=10920 [2022-04-05 23:46:24,851 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) [2022-04-05 23:46:28,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:46:28,272 INFO L93 Difference]: Finished difference Result 567 states and 618 transitions. [2022-04-05 23:46:28,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-04-05 23:46:28,272 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 [2022-04-05 23:46:28,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:46:28,274 INFO L225 Difference]: With dead ends: 567 [2022-04-05 23:46:28,274 INFO L226 Difference]: Without dead ends: 409 [2022-04-05 23:46:28,276 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 908 SyntacticMatches, 1 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10291 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=8214, Invalid=34016, Unknown=0, NotChecked=0, Total=42230 [2022-04-05 23:46:28,276 INFO L913 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 [2022-04-05 23:46:28,277 INFO L914 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] [2022-04-05 23:46:28,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-04-05 23:46:28,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2022-04-05 23:46:28,328 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) [2022-04-05 23:46:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 410 transitions. [2022-04-05 23:46:28,328 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 410 transitions. Word has length 405 [2022-04-05 23:46:28,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:46:28,329 INFO L478 AbstractCegarLoop]: Abstraction has 409 states and 410 transitions. [2022-04-05 23:46:28,329 INFO L479 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) [2022-04-05 23:46:28,329 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 410 transitions. [2022-04-05 23:46:28,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-04-05 23:46:28,330 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:46:28,330 INFO L499 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:46:28,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-04-05 23:46:28,531 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-04-05 23:46:28,532 INFO L403 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:46:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:46:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash 36921068, now seen corresponding path program 98 times [2022-04-05 23:46:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:46:28,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303499804] [2022-04-05 23:46:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:46:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:46:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:46:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:46:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:46:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:46:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:46:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:46:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:46:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:46:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:46:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:46:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:46:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:46:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:46:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:46:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:46:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:46:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:46:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:46:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:46:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:46:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:46:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:46:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:46:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:46:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:46:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:46:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:46:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 23:46:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 23:46:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 23:46:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 23:46:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 23:46:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 23:46:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 23:46:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 23:46:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 23:46:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 23:46:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 23:46:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 23:46:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 23:46:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 23:46:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 23:46:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 23:46:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 23:46:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 23:46:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 23:46:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 23:46:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 23:46:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 23:46:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 23:46:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1323 proven. 3676 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 23:46:29,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:46:29,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303499804] [2022-04-05 23:46:29,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303499804] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:46:29,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123706013] [2022-04-05 23:46:29,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:46:29,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:29,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:46:29,645 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) [2022-04-05 23:46:29,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-04-05 23:46:29,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:46:29,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:46:29,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 103 conjunts are in the unsatisfiable core [2022-04-05 23:46:29,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:46:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 23:46:30,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:46:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-04-05 23:46:30,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123706013] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:46:30,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:46:30,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 59 [2022-04-05 23:46:30,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468744510] [2022-04-05 23:46:30,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:46:30,950 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-04-05 23:46:30,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:46:30,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-04-05 23:46:30,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1393, Invalid=2029, Unknown=0, NotChecked=0, Total=3422 [2022-04-05 23:46:30,951 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) [2022-04-05 23:46:32,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:46:32,218 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2022-04-05 23:46:32,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-04-05 23:46:32,219 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 [2022-04-05 23:46:32,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:46:32,220 INFO L225 Difference]: With dead ends: 422 [2022-04-05 23:46:32,220 INFO L226 Difference]: Without dead ends: 420 [2022-04-05 23:46:32,221 INFO L912 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 [2022-04-05 23:46:32,221 INFO L913 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 [2022-04-05 23:46:32,222 INFO L914 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] [2022-04-05 23:46:32,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-04-05 23:46:32,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 416. [2022-04-05 23:46:32,266 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) [2022-04-05 23:46:32,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 417 transitions. [2022-04-05 23:46:32,267 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 417 transitions. Word has length 406 [2022-04-05 23:46:32,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:46:32,267 INFO L478 AbstractCegarLoop]: Abstraction has 416 states and 417 transitions. [2022-04-05 23:46:32,267 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.7966101694915255) internal successors, (165), 56 states have internal predecessors, (165), 51 states have call successors, (54), 4 states have call predecessors, (54), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-04-05 23:46:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 417 transitions. [2022-04-05 23:46:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-04-05 23:46:32,269 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:46:32,269 INFO L499 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:46:32,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-04-05 23:46:32,469 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:32,470 INFO L403 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:46:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:46:32,470 INFO L85 PathProgramCache]: Analyzing trace with hash 565020551, now seen corresponding path program 99 times [2022-04-05 23:46:32,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:46:32,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726536286] [2022-04-05 23:46:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:46:32,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:46:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:46:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-05 23:46:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:46:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:46:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:46:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:46:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:46:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:46:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:46:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:46:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:46:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:46:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:46:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:46:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:46:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:46:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:46:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:46:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:46:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:46:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:46:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:46:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:46:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:46:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:46:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:46:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:46:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 23:46:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 23:46:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 23:46:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 23:46:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 23:46:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 23:46:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 23:46:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 23:46:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 23:46:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 23:46:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 23:46:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 23:46:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 23:46:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 23:46:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 23:46:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 23:46:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 23:46:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 23:46:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 23:46:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 23:46:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 23:46:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 23:46:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 23:46:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 23:46:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 23:46:35,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:46:35,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726536286] [2022-04-05 23:46:35,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726536286] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:46:35,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994663354] [2022-04-05 23:46:35,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:46:35,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:35,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:46:35,140 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) [2022-04-05 23:46:35,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-04-05 23:46:35,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2022-04-05 23:46:35,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:46:35,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 104 conjunts are in the unsatisfiable core [2022-04-05 23:46:35,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:46:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 23:46:35,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:46:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 23:46:36,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994663354] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:46:36,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:46:36,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105, 105] total 107 [2022-04-05 23:46:36,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207478377] [2022-04-05 23:46:36,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:46:36,540 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-04-05 23:46:36,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:46:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-04-05 23:46:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2812, Invalid=8530, Unknown=0, NotChecked=0, Total=11342 [2022-04-05 23:46:36,542 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) [2022-04-05 23:46:40,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:46:40,215 INFO L93 Difference]: Finished difference Result 578 states and 630 transitions. [2022-04-05 23:46:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-04-05 23:46:40,215 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 [2022-04-05 23:46:40,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:46:40,217 INFO L225 Difference]: With dead ends: 578 [2022-04-05 23:46:40,217 INFO L226 Difference]: Without dead ends: 417 [2022-04-05 23:46:40,221 INFO L912 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 [2022-04-05 23:46:40,221 INFO L913 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 [2022-04-05 23:46:40,221 INFO L914 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] [2022-04-05 23:46:40,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-04-05 23:46:40,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-04-05 23:46:40,289 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) [2022-04-05 23:46:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 418 transitions. [2022-04-05 23:46:40,290 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 418 transitions. Word has length 413 [2022-04-05 23:46:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:46:40,290 INFO L478 AbstractCegarLoop]: Abstraction has 417 states and 418 transitions. [2022-04-05 23:46:40,290 INFO L479 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) [2022-04-05 23:46:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 418 transitions. [2022-04-05 23:46:40,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-04-05 23:46:40,292 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:46:40,292 INFO L499 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:46:40,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-04-05 23:46:40,509 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:40,509 INFO L403 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:46:40,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:46:40,509 INFO L85 PathProgramCache]: Analyzing trace with hash -487509267, now seen corresponding path program 100 times [2022-04-05 23:46:40,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:46:40,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886689776] [2022-04-05 23:46:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:46:40,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:46:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:46:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:46:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:46:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:46:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:46:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:46:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:46:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:46:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:46:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:46:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:46:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:46:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:46:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:46:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:46:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:46:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:46:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:46:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:46:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:46:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:46:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:46:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:46:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:46:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:46:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:46:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:46:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:46:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 23:46:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 23:46:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 23:46:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 23:46:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 23:46:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 23:46:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 23:46:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 23:46:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 23:46:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 23:46:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 23:46:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 23:46:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 23:46:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 23:46:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 23:46:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 23:46:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 23:46:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 23:46:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 23:46:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 23:46:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 23:46:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 23:46:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 23:46:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1375 proven. 3826 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 23:46:41,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:46:41,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886689776] [2022-04-05 23:46:41,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886689776] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:46:41,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37788652] [2022-04-05 23:46:41,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:46:41,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:41,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:46:41,664 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) [2022-04-05 23:46:41,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-04-05 23:46:41,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:46:41,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:46:41,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 105 conjunts are in the unsatisfiable core [2022-04-05 23:46:41,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:46:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 23:46:42,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:46:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-04-05 23:46:43,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37788652] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:46:43,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:46:43,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 60 [2022-04-05 23:46:43,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294018243] [2022-04-05 23:46:43,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:46:43,032 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-04-05 23:46:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:46:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-04-05 23:46:43,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1446, Invalid=2094, Unknown=0, NotChecked=0, Total=3540 [2022-04-05 23:46:43,033 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) [2022-04-05 23:46:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:46:44,326 INFO L93 Difference]: Finished difference Result 430 states and 432 transitions. [2022-04-05 23:46:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-04-05 23:46:44,327 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 [2022-04-05 23:46:44,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:46:44,328 INFO L225 Difference]: With dead ends: 430 [2022-04-05 23:46:44,328 INFO L226 Difference]: Without dead ends: 428 [2022-04-05 23:46:44,329 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1092 GetRequests, 976 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2354 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4330, Invalid=9010, Unknown=0, NotChecked=0, Total=13340 [2022-04-05 23:46:44,329 INFO L913 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 [2022-04-05 23:46:44,329 INFO L914 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] [2022-04-05 23:46:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-04-05 23:46:44,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 424. [2022-04-05 23:46:44,378 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) [2022-04-05 23:46:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 425 transitions. [2022-04-05 23:46:44,379 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 425 transitions. Word has length 414 [2022-04-05 23:46:44,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:46:44,379 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 425 transitions. [2022-04-05 23:46:44,379 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.8) internal successors, (168), 57 states have internal predecessors, (168), 52 states have call successors, (55), 4 states have call predecessors, (55), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-04-05 23:46:44,379 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 425 transitions. [2022-04-05 23:46:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-04-05 23:46:44,381 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:46:44,381 INFO L499 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:46:44,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-04-05 23:46:44,582 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-04-05 23:46:44,583 INFO L403 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:46:44,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:46:44,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1129996390, now seen corresponding path program 101 times [2022-04-05 23:46:44,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:46:44,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501219372] [2022-04-05 23:46:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:46:44,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:46:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:46:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-04-05 23:46:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:46:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:46:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:46:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:46:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:46:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:46:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:46:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:46:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:46:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:46:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:46:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:46:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:46:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:46:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:46:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:46:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:46:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:46:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:46:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:46:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:46:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:46:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:46:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:46:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:46:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:46:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 23:46:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 23:46:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 23:46:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 23:46:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 23:46:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 23:46:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 23:46:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 23:46:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 23:46:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 23:46:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 23:46:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 23:46:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 23:46:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 23:46:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 23:46:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 23:46:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 23:46:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 23:46:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 23:46:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 23:46:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 23:46:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 23:46:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 23:46:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 23:46:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-04-05 23:46:47,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:46:47,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501219372] [2022-04-05 23:46:47,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501219372] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:46:47,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872926651] [2022-04-05 23:46:47,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:46:47,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:47,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:46:47,328 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) [2022-04-05 23:46:47,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-04-05 23:46:47,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2022-04-05 23:46:47,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:46:47,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 106 conjunts are in the unsatisfiable core [2022-04-05 23:46:47,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:46:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-04-05 23:46:48,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:46:48,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-04-05 23:46:48,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872926651] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:46:48,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:46:48,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107, 107] total 109 [2022-04-05 23:46:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105565883] [2022-04-05 23:46:48,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:46:48,798 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-04-05 23:46:48,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:46:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-04-05 23:46:48,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2919, Invalid=8853, Unknown=0, NotChecked=0, Total=11772 [2022-04-05 23:46:48,799 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) [2022-04-05 23:46:52,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:46:52,394 INFO L93 Difference]: Finished difference Result 589 states and 642 transitions. [2022-04-05 23:46:52,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-04-05 23:46:52,395 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 [2022-04-05 23:46:52,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:46:52,396 INFO L225 Difference]: With dead ends: 589 [2022-04-05 23:46:52,396 INFO L226 Difference]: Without dead ends: 425 [2022-04-05 23:46:52,398 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1157 GetRequests, 944 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11119 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=8854, Invalid=36728, Unknown=0, NotChecked=0, Total=45582 [2022-04-05 23:46:52,399 INFO L913 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 [2022-04-05 23:46:52,399 INFO L914 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] [2022-04-05 23:46:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-04-05 23:46:52,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2022-04-05 23:46:52,454 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) [2022-04-05 23:46:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2022-04-05 23:46:52,455 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 421 [2022-04-05 23:46:52,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:46:52,455 INFO L478 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2022-04-05 23:46:52,455 INFO L479 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) [2022-04-05 23:46:52,455 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2022-04-05 23:46:52,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-04-05 23:46:52,457 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:46:52,457 INFO L499 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:46:52,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-04-05 23:46:52,657 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-04-05 23:46:52,657 INFO L403 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:46:52,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:46:52,658 INFO L85 PathProgramCache]: Analyzing trace with hash -620280372, now seen corresponding path program 102 times [2022-04-05 23:46:52,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:46:52,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535093518] [2022-04-05 23:46:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:46:52,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:46:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:46:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:46:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:46:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:46:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:46:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:46:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:46:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:46:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:46:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:46:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:46:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:46:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:46:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:46:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:46:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:46:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:46:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:46:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:46:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:46:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:46:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:46:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:46:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:46:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:46:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:46:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:46:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:46:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:46:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 23:46:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 23:46:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 23:46:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 23:46:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 23:46:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 23:46:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 23:46:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 23:46:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 23:46:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 23:46:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 23:46:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 23:46:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 23:46:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 23:46:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 23:46:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 23:46:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 23:46:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 23:46:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 23:46:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 23:46:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 23:46:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 23:46:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 23:46:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1428 proven. 3979 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-04-05 23:46:53,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:46:53,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535093518] [2022-04-05 23:46:53,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535093518] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:46:53,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830625784] [2022-04-05 23:46:53,838 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:46:53,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:53,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:46:53,839 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) [2022-04-05 23:46:53,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-04-05 23:46:54,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2022-04-05 23:46:54,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:46:54,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 107 conjunts are in the unsatisfiable core [2022-04-05 23:46:54,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:46:54,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-04-05 23:46:54,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:46:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-04-05 23:46:55,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830625784] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:46:55,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:46:55,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 61 [2022-04-05 23:46:55,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865386558] [2022-04-05 23:46:55,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:46:55,252 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-04-05 23:46:55,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:46:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-04-05 23:46:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1500, Invalid=2160, Unknown=0, NotChecked=0, Total=3660 [2022-04-05 23:46:55,253 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) [2022-04-05 23:46:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:46:56,580 INFO L93 Difference]: Finished difference Result 438 states and 440 transitions. [2022-04-05 23:46:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-04-05 23:46:56,580 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 [2022-04-05 23:46:56,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:46:56,581 INFO L225 Difference]: With dead ends: 438 [2022-04-05 23:46:56,581 INFO L226 Difference]: Without dead ends: 436 [2022-04-05 23:46:56,582 INFO L912 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 [2022-04-05 23:46:56,582 INFO L913 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 [2022-04-05 23:46:56,582 INFO L914 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] [2022-04-05 23:46:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-04-05 23:46:56,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 432. [2022-04-05 23:46:56,634 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) [2022-04-05 23:46:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 433 transitions. [2022-04-05 23:46:56,635 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 433 transitions. Word has length 422 [2022-04-05 23:46:56,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:46:56,635 INFO L478 AbstractCegarLoop]: Abstraction has 432 states and 433 transitions. [2022-04-05 23:46:56,635 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.80327868852459) internal successors, (171), 58 states have internal predecessors, (171), 53 states have call successors, (56), 4 states have call predecessors, (56), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-04-05 23:46:56,635 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 433 transitions. [2022-04-05 23:46:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-04-05 23:46:56,637 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:46:56,637 INFO L499 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:46:56,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-04-05 23:46:56,837 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-04-05 23:46:56,837 INFO L403 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:46:56,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:46:56,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2027037863, now seen corresponding path program 103 times [2022-04-05 23:46:56,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:46:56,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538894017] [2022-04-05 23:46:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:46:56,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:46:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:46:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-04-05 23:46:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:46:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:46:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:46:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:46:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:46:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:46:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:46:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:46:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:46:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:46:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:46:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:46:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:46:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:46:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:46:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:46:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:46:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:46:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:46:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:46:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:46:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:46:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:46:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:46:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:46:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:46:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:46:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 23:46:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 23:46:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 23:46:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 23:46:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 23:46:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 23:46:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 23:46:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 23:46:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 23:46:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 23:46:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 23:46:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 23:46:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 23:46:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 23:46:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 23:46:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 23:46:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 23:46:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 23:46:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 23:46:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 23:46:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 23:46:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 23:46:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 23:46:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 23:46:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 23:46:59,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:46:59,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538894017] [2022-04-05 23:46:59,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538894017] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:46:59,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322100640] [2022-04-05 23:46:59,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:46:59,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:46:59,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:46:59,663 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) [2022-04-05 23:46:59,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-04-05 23:46:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:46:59,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 108 conjunts are in the unsatisfiable core [2022-04-05 23:46:59,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:47:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 23:47:00,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:47:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 23:47:01,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322100640] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:47:01,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:47:01,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109, 109] total 111 [2022-04-05 23:47:01,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332223774] [2022-04-05 23:47:01,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:47:01,010 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-04-05 23:47:01,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:47:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-04-05 23:47:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3028, Invalid=9182, Unknown=0, NotChecked=0, Total=12210 [2022-04-05 23:47:01,011 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) [2022-04-05 23:47:04,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:47:04,871 INFO L93 Difference]: Finished difference Result 600 states and 654 transitions. [2022-04-05 23:47:04,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-04-05 23:47:04,871 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 [2022-04-05 23:47:04,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:47:04,873 INFO L225 Difference]: With dead ends: 600 [2022-04-05 23:47:04,873 INFO L226 Difference]: Without dead ends: 433 [2022-04-05 23:47:04,875 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1179 GetRequests, 962 SyntacticMatches, 1 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11545 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=9183, Invalid=38123, Unknown=0, NotChecked=0, Total=47306 [2022-04-05 23:47:04,875 INFO L913 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 [2022-04-05 23:47:04,876 INFO L914 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] [2022-04-05 23:47:04,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-04-05 23:47:04,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2022-04-05 23:47:04,921 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) [2022-04-05 23:47:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 434 transitions. [2022-04-05 23:47:04,921 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 434 transitions. Word has length 429 [2022-04-05 23:47:04,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:47:04,921 INFO L478 AbstractCegarLoop]: Abstraction has 433 states and 434 transitions. [2022-04-05 23:47:04,921 INFO L479 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) [2022-04-05 23:47:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 434 transitions. [2022-04-05 23:47:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-04-05 23:47:04,923 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:47:04,923 INFO L499 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:47:04,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-04-05 23:47:05,123 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:47:05,124 INFO L403 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:47:05,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:47:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash -284277747, now seen corresponding path program 104 times [2022-04-05 23:47:05,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:47:05,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974250010] [2022-04-05 23:47:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:47:05,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:47:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:47:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:47:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:47:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:47:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:47:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:47:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:47:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:47:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:47:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:47:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:47:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:47:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:47:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:47:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:47:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:47:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:47:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:47:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:47:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:47:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:47:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:47:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:47:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:47:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:47:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:47:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:47:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:47:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:47:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 23:47:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 23:47:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 23:47:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 23:47:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 23:47:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 23:47:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 23:47:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 23:47:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 23:47:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 23:47:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 23:47:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 23:47:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 23:47:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 23:47:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 23:47:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 23:47:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 23:47:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-04-05 23:47:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 23:47:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-04-05 23:47:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 23:47:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-04-05 23:47:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 23:47:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-04-05 23:47:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 10921 backedges. 1482 proven. 4135 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 23:47:06,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:47:06,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974250010] [2022-04-05 23:47:06,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974250010] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:47:06,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155892866] [2022-04-05 23:47:06,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:47:06,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:47:06,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:47:06,320 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) [2022-04-05 23:47:06,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-04-05 23:47:06,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:47:06,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:47:06,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 109 conjunts are in the unsatisfiable core [2022-04-05 23:47:06,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:47:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10921 backedges. 1535 proven. 4082 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 23:47:07,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:47:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10921 backedges. 1535 proven. 4082 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-04-05 23:47:07,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155892866] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:47:07,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:47:07,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 62 [2022-04-05 23:47:07,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932145970] [2022-04-05 23:47:07,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:47:07,686 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-04-05 23:47:07,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:47:07,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-04-05 23:47:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1555, Invalid=2227, Unknown=0, NotChecked=0, Total=3782 [2022-04-05 23:47:07,692 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) [2022-04-05 23:47:09,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:47:09,074 INFO L93 Difference]: Finished difference Result 446 states and 448 transitions. [2022-04-05 23:47:09,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-04-05 23:47:09,074 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 [2022-04-05 23:47:09,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:47:09,075 INFO L225 Difference]: With dead ends: 446 [2022-04-05 23:47:09,075 INFO L226 Difference]: Without dead ends: 444 [2022-04-05 23:47:09,076 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1014 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4657, Invalid=9623, Unknown=0, NotChecked=0, Total=14280 [2022-04-05 23:47:09,077 INFO L913 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 [2022-04-05 23:47:09,077 INFO L914 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] [2022-04-05 23:47:09,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-04-05 23:47:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 440. [2022-04-05 23:47:09,122 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) [2022-04-05 23:47:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 441 transitions. [2022-04-05 23:47:09,123 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 441 transitions. Word has length 430 [2022-04-05 23:47:09,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:47:09,123 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 441 transitions. [2022-04-05 23:47:09,123 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.806451612903226) internal successors, (174), 59 states have internal predecessors, (174), 54 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-04-05 23:47:09,123 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 441 transitions. [2022-04-05 23:47:09,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-04-05 23:47:09,125 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:47:09,125 INFO L499 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:47:09,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-04-05 23:47:09,325 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-04-05 23:47:09,326 INFO L403 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:47:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:47:09,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1128412346, now seen corresponding path program 105 times [2022-04-05 23:47:09,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:47:09,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657871777] [2022-04-05 23:47:09,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:47:09,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:47:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:47:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-04-05 23:47:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:47:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:47:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:47:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:47:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:47:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:47:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:47:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:47:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:47:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:47:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:47:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:47:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:47:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:47:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:47:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:47:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:47:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:47:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:47:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:47:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:47:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:47:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:47:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:47:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:47:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:47:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:47:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 23:47:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 23:47:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 23:47:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 23:47:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 23:47:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 23:47:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 23:47:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 23:47:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 23:47:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 23:47:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 23:47:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 23:47:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 23:47:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 23:47:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 23:47:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 23:47:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 23:47:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-04-05 23:47:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 23:47:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-04-05 23:47:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 23:47:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-04-05 23:47:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 23:47:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-04-05 23:47:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 23:47:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11289 backedges. 4346 proven. 1431 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 23:47:12,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:47:12,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657871777] [2022-04-05 23:47:12,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657871777] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:47:12,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143438302] [2022-04-05 23:47:12,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:47:12,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:47:12,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:47:12,270 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) [2022-04-05 23:47:12,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-04-05 23:47:12,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2022-04-05 23:47:12,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:47:12,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 110 conjunts are in the unsatisfiable core [2022-04-05 23:47:12,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:47:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 11289 backedges. 4346 proven. 1431 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 23:47:13,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:47:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 11289 backedges. 4346 proven. 1431 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 23:47:13,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143438302] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:47:13,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:47:13,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 111, 111] total 113 [2022-04-05 23:47:13,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150024034] [2022-04-05 23:47:13,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:47:13,721 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-04-05 23:47:13,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:47:13,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-04-05 23:47:13,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=9517, Unknown=0, NotChecked=0, Total=12656 [2022-04-05 23:47:13,722 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) [2022-04-05 23:47:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:47:17,883 INFO L93 Difference]: Finished difference Result 611 states and 666 transitions. [2022-04-05 23:47:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-04-05 23:47:17,883 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 [2022-04-05 23:47:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:47:17,884 INFO L225 Difference]: With dead ends: 611 [2022-04-05 23:47:17,884 INFO L226 Difference]: Without dead ends: 441 [2022-04-05 23:47:17,887 INFO L912 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 [2022-04-05 23:47:17,887 INFO L913 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 [2022-04-05 23:47:17,887 INFO L914 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] [2022-04-05 23:47:17,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-04-05 23:47:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-04-05 23:47:17,934 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) [2022-04-05 23:47:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2022-04-05 23:47:17,934 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 437 [2022-04-05 23:47:17,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:47:17,935 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2022-04-05 23:47:17,935 INFO L479 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) [2022-04-05 23:47:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2022-04-05 23:47:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-04-05 23:47:17,936 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:47:17,936 INFO L499 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:47:17,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-04-05 23:47:18,137 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-04-05 23:47:18,137 INFO L403 AbstractCegarLoop]: === Iteration 108 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:47:18,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:47:18,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1817238356, now seen corresponding path program 106 times [2022-04-05 23:47:18,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:47:18,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062877882] [2022-04-05 23:47:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:47:18,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:47:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:47:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:47:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:47:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:47:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:47:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:47:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:47:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:47:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:47:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:47:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:47:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:47:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:47:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:47:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:47:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:47:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:47:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:47:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:47:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:47:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:47:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:47:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:47:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 23:47:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 23:47:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 23:47:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 23:47:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 23:47:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 23:47:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 23:47:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 23:47:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 23:47:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 23:47:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 23:47:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 23:47:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 23:47:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 23:47:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 23:47:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 23:47:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 23:47:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 23:47:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 23:47:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 23:47:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 23:47:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 23:47:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 23:47:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 23:47:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-04-05 23:47:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 23:47:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-04-05 23:47:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 23:47:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-04-05 23:47:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 23:47:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-04-05 23:47:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 1537 proven. 4294 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 23:47:19,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:47:19,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062877882] [2022-04-05 23:47:19,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062877882] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:47:19,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161633840] [2022-04-05 23:47:19,409 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:47:19,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:47:19,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:47:19,410 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) [2022-04-05 23:47:19,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-04-05 23:47:19,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:47:19,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:47:19,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 111 conjunts are in the unsatisfiable core [2022-04-05 23:47:19,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:47:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 1591 proven. 4240 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 23:47:20,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:47:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 11343 backedges. 1591 proven. 4240 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-04-05 23:47:20,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161633840] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:47:20,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:47:20,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 63 [2022-04-05 23:47:20,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584964797] [2022-04-05 23:47:20,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:47:20,906 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-04-05 23:47:20,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:47:20,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-04-05 23:47:20,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1611, Invalid=2295, Unknown=0, NotChecked=0, Total=3906 [2022-04-05 23:47:20,907 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) [2022-04-05 23:47:22,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:47:22,350 INFO L93 Difference]: Finished difference Result 454 states and 456 transitions. [2022-04-05 23:47:22,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-04-05 23:47:22,350 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 [2022-04-05 23:47:22,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:47:22,351 INFO L225 Difference]: With dead ends: 454 [2022-04-05 23:47:22,351 INFO L226 Difference]: Without dead ends: 452 [2022-04-05 23:47:22,352 INFO L912 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 [2022-04-05 23:47:22,352 INFO L913 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 [2022-04-05 23:47:22,352 INFO L914 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] [2022-04-05 23:47:22,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-04-05 23:47:22,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 448. [2022-04-05 23:47:22,399 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) [2022-04-05 23:47:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 449 transitions. [2022-04-05 23:47:22,400 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 449 transitions. Word has length 438 [2022-04-05 23:47:22,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:47:22,400 INFO L478 AbstractCegarLoop]: Abstraction has 448 states and 449 transitions. [2022-04-05 23:47:22,400 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.8095238095238093) internal successors, (177), 60 states have internal predecessors, (177), 55 states have call successors, (58), 4 states have call predecessors, (58), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-04-05 23:47:22,400 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 449 transitions. [2022-04-05 23:47:22,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-04-05 23:47:22,402 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:47:22,402 INFO L499 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:47:22,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-04-05 23:47:22,611 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:47:22,611 INFO L403 AbstractCegarLoop]: === Iteration 109 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:47:22,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:47:22,612 INFO L85 PathProgramCache]: Analyzing trace with hash 809224647, now seen corresponding path program 107 times [2022-04-05 23:47:22,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:47:22,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145599264] [2022-04-05 23:47:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:47:22,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:47:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:47:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-05 23:47:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:47:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:47:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:47:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:47:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:47:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:47:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:47:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:47:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:47:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:47:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:47:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:47:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:47:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:47:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:47:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:47:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:47:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:47:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:47:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:47:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:47:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 23:47:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 23:47:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 23:47:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 23:47:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 23:47:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 23:47:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 23:47:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 23:47:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 23:47:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 23:47:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 23:47:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 23:47:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 23:47:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 23:47:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 23:47:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 23:47:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 23:47:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 23:47:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 23:47:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 23:47:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 23:47:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 23:47:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 23:47:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 23:47:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-04-05 23:47:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 23:47:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-04-05 23:47:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 23:47:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-04-05 23:47:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 23:47:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-04-05 23:47:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 23:47:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 4509 proven. 1485 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 23:47:25,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:47:25,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145599264] [2022-04-05 23:47:25,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145599264] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:47:25,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836261592] [2022-04-05 23:47:25,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:47:25,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:47:25,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:47:25,682 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) [2022-04-05 23:47:25,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-04-05 23:47:25,896 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2022-04-05 23:47:25,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:47:25,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 112 conjunts are in the unsatisfiable core [2022-04-05 23:47:25,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:47:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 4509 proven. 1485 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 23:47:26,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:47:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 11718 backedges. 4509 proven. 1485 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 23:47:27,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836261592] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:47:27,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:47:27,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 113, 113] total 115 [2022-04-05 23:47:27,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642212801] [2022-04-05 23:47:27,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:47:27,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-04-05 23:47:27,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:47:27,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-04-05 23:47:27,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3252, Invalid=9858, Unknown=0, NotChecked=0, Total=13110 [2022-04-05 23:47:27,189 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) [2022-04-05 23:47:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:47:31,333 INFO L93 Difference]: Finished difference Result 622 states and 678 transitions. [2022-04-05 23:47:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-04-05 23:47:31,333 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 [2022-04-05 23:47:31,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:47:31,334 INFO L225 Difference]: With dead ends: 622 [2022-04-05 23:47:31,334 INFO L226 Difference]: Without dead ends: 449 [2022-04-05 23:47:31,337 INFO L912 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 [2022-04-05 23:47:31,337 INFO L913 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, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 23:47:31,337 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 112 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 23:47:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-04-05 23:47:31,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2022-04-05 23:47:31,403 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) [2022-04-05 23:47:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 450 transitions. [2022-04-05 23:47:31,404 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 450 transitions. Word has length 445 [2022-04-05 23:47:31,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:47:31,404 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 450 transitions. [2022-04-05 23:47:31,404 INFO L479 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) [2022-04-05 23:47:31,405 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 450 transitions. [2022-04-05 23:47:31,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-04-05 23:47:31,406 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:47:31,406 INFO L499 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:47:31,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-04-05 23:47:31,607 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:47:31,607 INFO L403 AbstractCegarLoop]: === Iteration 110 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:47:31,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:47:31,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1678269741, now seen corresponding path program 108 times [2022-04-05 23:47:31,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:47:31,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47025994] [2022-04-05 23:47:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:47:31,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:47:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:47:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:47:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:47:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:47:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:47:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:47:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:47:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:47:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:47:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:47:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:47:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:47:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:47:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:47:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:47:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:47:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:47:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:47:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:47:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:47:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:47:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:47:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:47:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:47:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 23:47:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 23:47:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 23:47:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 23:47:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 23:47:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 23:47:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 23:47:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 23:47:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 23:47:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 23:47:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 23:47:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 23:47:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 23:47:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 23:47:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 23:47:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 23:47:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 23:47:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 23:47:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 23:47:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 23:47:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 23:47:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 23:47:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 23:47:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 23:47:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-04-05 23:47:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 23:47:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-04-05 23:47:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 23:47:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-04-05 23:47:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 23:47:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-04-05 23:47:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11773 backedges. 1593 proven. 4456 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 23:47:32,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:47:32,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47025994] [2022-04-05 23:47:32,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47025994] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:47:32,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085824808] [2022-04-05 23:47:32,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:47:32,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:47:32,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:47:32,891 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) [2022-04-05 23:47:32,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-04-05 23:47:33,128 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2022-04-05 23:47:33,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:47:33,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 113 conjunts are in the unsatisfiable core [2022-04-05 23:47:33,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:47:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11773 backedges. 1648 proven. 4401 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 23:47:33,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:47:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11773 backedges. 1648 proven. 4401 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-04-05 23:47:34,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085824808] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:47:34,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:47:34,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 60] total 64 [2022-04-05 23:47:34,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453173247] [2022-04-05 23:47:34,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:47:34,440 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-04-05 23:47:34,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:47:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-04-05 23:47:34,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1668, Invalid=2364, Unknown=0, NotChecked=0, Total=4032 [2022-04-05 23:47:34,441 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) [2022-04-05 23:47:35,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:47:35,961 INFO L93 Difference]: Finished difference Result 462 states and 464 transitions. [2022-04-05 23:47:35,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-04-05 23:47:35,962 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 [2022-04-05 23:47:35,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:47:35,963 INFO L225 Difference]: With dead ends: 462 [2022-04-05 23:47:35,963 INFO L226 Difference]: Without dead ends: 460 [2022-04-05 23:47:35,964 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1052 SyntacticMatches, 2 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4996, Invalid=10256, Unknown=0, NotChecked=0, Total=15252 [2022-04-05 23:47:35,964 INFO L913 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 [2022-04-05 23:47:35,964 INFO L914 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] [2022-04-05 23:47:35,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-04-05 23:47:36,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 456. [2022-04-05 23:47:36,052 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) [2022-04-05 23:47:36,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 457 transitions. [2022-04-05 23:47:36,053 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 457 transitions. Word has length 446 [2022-04-05 23:47:36,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:47:36,054 INFO L478 AbstractCegarLoop]: Abstraction has 456 states and 457 transitions. [2022-04-05 23:47:36,054 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.8125) internal successors, (180), 61 states have internal predecessors, (180), 56 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-04-05 23:47:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 457 transitions. [2022-04-05 23:47:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-04-05 23:47:36,056 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:47:36,056 INFO L499 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:47:36,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-04-05 23:47:36,279 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2022-04-05 23:47:36,279 INFO L403 AbstractCegarLoop]: === Iteration 111 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:47:36,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:47:36,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1811206618, now seen corresponding path program 109 times [2022-04-05 23:47:36,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:47:36,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337073042] [2022-04-05 23:47:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:47:36,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:47:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:47:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-04-05 23:47:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:47:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:47:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:47:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:47:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:47:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:47:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:47:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:47:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:47:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:47:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:47:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:47:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:47:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:47:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:47:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:47:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:47:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:47:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:47:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:47:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:47:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:47:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 23:47:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 23:47:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 23:47:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 23:47:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 23:47:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 23:47:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 23:47:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 23:47:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 23:47:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 23:47:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 23:47:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 23:47:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 23:47:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 23:47:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 23:47:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 23:47:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 23:47:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 23:47:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 23:47:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 23:47:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 23:47:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 23:47:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 23:47:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 23:47:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-04-05 23:47:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 23:47:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-04-05 23:47:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 23:47:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-04-05 23:47:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 23:47:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-04-05 23:47:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 23:47:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12155 backedges. 4675 proven. 1540 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 23:47:39,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:47:39,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337073042] [2022-04-05 23:47:39,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337073042] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:47:39,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951698598] [2022-04-05 23:47:39,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:47:39,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:47:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:47:39,478 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) [2022-04-05 23:47:39,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-04-05 23:47:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:39,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 114 conjunts are in the unsatisfiable core [2022-04-05 23:47:39,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:47:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12155 backedges. 4675 proven. 1540 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 23:47:40,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:47:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12155 backedges. 4675 proven. 1540 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 23:47:40,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951698598] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:47:40,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:47:40,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 115, 115] total 117 [2022-04-05 23:47:40,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869391156] [2022-04-05 23:47:40,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:47:40,946 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-04-05 23:47:40,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:47:40,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-04-05 23:47:40,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=10205, Unknown=0, NotChecked=0, Total=13572 [2022-04-05 23:47:40,948 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) [2022-04-05 23:47:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:47:45,405 INFO L93 Difference]: Finished difference Result 633 states and 690 transitions. [2022-04-05 23:47:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-04-05 23:47:45,406 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 [2022-04-05 23:47:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:47:45,407 INFO L225 Difference]: With dead ends: 633 [2022-04-05 23:47:45,407 INFO L226 Difference]: Without dead ends: 457 [2022-04-05 23:47:45,410 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 1016 SyntacticMatches, 1 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12871 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=10206, Invalid=42464, Unknown=0, NotChecked=0, Total=52670 [2022-04-05 23:47:45,410 INFO L913 BasicCegarLoop]: 66 mSDtfsCounter, 19 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-04-05 23:47:45,410 INFO L914 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] [2022-04-05 23:47:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-04-05 23:47:45,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2022-04-05 23:47:45,475 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) [2022-04-05 23:47:45,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 458 transitions. [2022-04-05 23:47:45,476 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 458 transitions. Word has length 453 [2022-04-05 23:47:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:47:45,476 INFO L478 AbstractCegarLoop]: Abstraction has 457 states and 458 transitions. [2022-04-05 23:47:45,476 INFO L479 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) [2022-04-05 23:47:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 458 transitions. [2022-04-05 23:47:45,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-04-05 23:47:45,478 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:47:45,478 INFO L499 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:47:45,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-04-05 23:47:45,679 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:47:45,679 INFO L403 AbstractCegarLoop]: === Iteration 112 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:47:45,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:47:45,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1697055860, now seen corresponding path program 110 times [2022-04-05 23:47:45,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:47:45,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248405672] [2022-04-05 23:47:45,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:47:45,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:47:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:47:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:47:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:47:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:47:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:47:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:47:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:47:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:47:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:47:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:47:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:47:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:47:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:47:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:47:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:47:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:47:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:47:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:47:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:47:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:47:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:47:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:47:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:47:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:47:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:47:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 23:47:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 23:47:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 23:47:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 23:47:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 23:47:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 23:47:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 23:47:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 23:47:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 23:47:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 23:47:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 23:47:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 23:47:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 23:47:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 23:47:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 23:47:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 23:47:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 23:47:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 23:47:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 23:47:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 23:47:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 23:47:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 23:47:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 23:47:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:46,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 23:47:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:47,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-04-05 23:47:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:47,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 23:47:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:47,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-04-05 23:47:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:47,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 23:47:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:47,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-04-05 23:47:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:47,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 23:47:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:47,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-04-05 23:47:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12211 backedges. 1650 proven. 4621 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 23:47:47,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:47:47,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248405672] [2022-04-05 23:47:47,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248405672] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:47:47,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124637275] [2022-04-05 23:47:47,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:47:47,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:47:47,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:47:47,012 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) [2022-04-05 23:47:47,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-04-05 23:47:47,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:47:47,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:47:47,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 115 conjunts are in the unsatisfiable core [2022-04-05 23:47:47,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:47:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 12211 backedges. 1706 proven. 4565 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 23:47:47,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:47:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12211 backedges. 1706 proven. 4565 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-04-05 23:47:48,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124637275] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:47:48,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:47:48,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 65 [2022-04-05 23:47:48,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170211218] [2022-04-05 23:47:48,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:47:48,515 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-04-05 23:47:48,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:47:48,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-04-05 23:47:48,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1726, Invalid=2434, Unknown=0, NotChecked=0, Total=4160 [2022-04-05 23:47:48,515 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) [2022-04-05 23:47:50,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:47:50,040 INFO L93 Difference]: Finished difference Result 470 states and 472 transitions. [2022-04-05 23:47:50,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-04-05 23:47:50,041 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 [2022-04-05 23:47:50,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:47:50,042 INFO L225 Difference]: With dead ends: 470 [2022-04-05 23:47:50,042 INFO L226 Difference]: Without dead ends: 468 [2022-04-05 23:47:50,043 INFO L912 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 [2022-04-05 23:47:50,043 INFO L913 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 [2022-04-05 23:47:50,043 INFO L914 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] [2022-04-05 23:47:50,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-04-05 23:47:50,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 464. [2022-04-05 23:47:50,094 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) [2022-04-05 23:47:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 465 transitions. [2022-04-05 23:47:50,095 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 465 transitions. Word has length 454 [2022-04-05 23:47:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:47:50,095 INFO L478 AbstractCegarLoop]: Abstraction has 464 states and 465 transitions. [2022-04-05 23:47:50,095 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.8153846153846156) internal successors, (183), 62 states have internal predecessors, (183), 57 states have call successors, (60), 4 states have call predecessors, (60), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-04-05 23:47:50,095 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 465 transitions. [2022-04-05 23:47:50,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2022-04-05 23:47:50,097 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:47:50,097 INFO L499 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:47:50,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-04-05 23:47:50,311 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-04-05 23:47:50,311 INFO L403 AbstractCegarLoop]: === Iteration 113 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:47:50,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:47:50,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1719896345, now seen corresponding path program 111 times [2022-04-05 23:47:50,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:47:50,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982498636] [2022-04-05 23:47:50,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:47:50,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:47:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:47:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-05 23:47:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:47:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:47:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:47:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:47:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:47:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:47:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:47:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:47:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:47:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:47:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:47:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:47:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:47:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:47:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:47:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:47:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:47:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:47:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:47:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:47:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:47:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:47:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:47:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 23:47:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 23:47:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 23:47:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 23:47:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 23:47:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 23:47:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 23:47:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 23:47:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 23:47:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 23:47:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 23:47:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 23:47:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 23:47:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 23:47:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 23:47:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 23:47:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 23:47:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 23:47:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 23:47:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 23:47:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 23:47:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 23:47:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 23:47:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 23:47:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-04-05 23:47:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 23:47:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-04-05 23:47:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 23:47:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-04-05 23:47:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 23:47:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-04-05 23:47:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 23:47:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:47:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 4844 proven. 1596 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-04-05 23:47:53,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:47:53,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982498636] [2022-04-05 23:47:53,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982498636] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:47:53,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565553576] [2022-04-05 23:47:53,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:47:53,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:47:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:47:53,594 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) [2022-04-05 23:47:53,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-04-05 23:47:53,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2022-04-05 23:47:53,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:47:53,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 116 conjunts are in the unsatisfiable core [2022-04-05 23:47:53,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:47:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 4844 proven. 1596 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-04-05 23:47:54,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:47:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12600 backedges. 4844 proven. 1596 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-04-05 23:47:55,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565553576] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:47:55,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:47:55,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 117, 117] total 119 [2022-04-05 23:47:55,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314450428] [2022-04-05 23:47:55,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:47:55,170 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-04-05 23:47:55,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:47:55,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-04-05 23:47:55,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3484, Invalid=10558, Unknown=0, NotChecked=0, Total=14042 [2022-04-05 23:47:55,171 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) [2022-04-05 23:47:59,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:47:59,790 INFO L93 Difference]: Finished difference Result 644 states and 702 transitions. [2022-04-05 23:47:59,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-04-05 23:47:59,790 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 [2022-04-05 23:47:59,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:47:59,791 INFO L225 Difference]: With dead ends: 644 [2022-04-05 23:47:59,792 INFO L226 Difference]: Without dead ends: 465 [2022-04-05 23:47:59,794 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 1034 SyntacticMatches, 1 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13329 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=10559, Invalid=43963, Unknown=0, NotChecked=0, Total=54522 [2022-04-05 23:47:59,795 INFO L913 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 [2022-04-05 23:47:59,795 INFO L914 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] [2022-04-05 23:47:59,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-04-05 23:47:59,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2022-04-05 23:47:59,846 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) [2022-04-05 23:47:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 466 transitions. [2022-04-05 23:47:59,847 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 466 transitions. Word has length 461 [2022-04-05 23:47:59,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:47:59,847 INFO L478 AbstractCegarLoop]: Abstraction has 465 states and 466 transitions. [2022-04-05 23:47:59,847 INFO L479 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) [2022-04-05 23:47:59,847 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 466 transitions. [2022-04-05 23:47:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-04-05 23:47:59,849 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:47:59,849 INFO L499 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:47:59,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-04-05 23:48:00,050 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-04-05 23:48:00,050 INFO L403 AbstractCegarLoop]: === Iteration 114 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:48:00,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:48:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1668382285, now seen corresponding path program 112 times [2022-04-05 23:48:00,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:48:00,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764670924] [2022-04-05 23:48:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:48:00,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:48:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:48:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:48:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:48:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:48:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:48:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:48:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:48:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:48:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:48:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:48:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:48:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:48:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:48:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:48:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:48:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:48:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:48:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:48:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:48:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:48:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:48:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:48:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:48:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:48:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:48:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:48:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 23:48:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 23:48:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 23:48:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 23:48:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 23:48:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 23:48:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 23:48:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 23:48:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 23:48:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 23:48:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 23:48:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 23:48:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 23:48:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 23:48:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 23:48:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 23:48:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 23:48:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 23:48:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 23:48:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 23:48:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 23:48:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 23:48:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 23:48:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 23:48:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-04-05 23:48:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 23:48:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-04-05 23:48:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 23:48:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-04-05 23:48:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 23:48:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-04-05 23:48:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12657 backedges. 1708 proven. 4789 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-04-05 23:48:01,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:48:01,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764670924] [2022-04-05 23:48:01,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764670924] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:48:01,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601800940] [2022-04-05 23:48:01,417 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:48:01,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:48:01,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:48:01,418 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) [2022-04-05 23:48:01,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-04-05 23:48:01,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:48:01,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:48:01,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 117 conjunts are in the unsatisfiable core [2022-04-05 23:48:01,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:48:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12657 backedges. 1765 proven. 4732 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-04-05 23:48:02,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:48:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12657 backedges. 1765 proven. 4732 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2022-04-05 23:48:02,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601800940] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:48:02,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:48:02,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 62] total 66 [2022-04-05 23:48:02,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617905831] [2022-04-05 23:48:02,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:48:02,925 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-04-05 23:48:02,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:48:02,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-04-05 23:48:02,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1785, Invalid=2505, Unknown=0, NotChecked=0, Total=4290 [2022-04-05 23:48:02,926 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) [2022-04-05 23:48:04,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:48:04,440 INFO L93 Difference]: Finished difference Result 478 states and 480 transitions. [2022-04-05 23:48:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-04-05 23:48:04,441 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 [2022-04-05 23:48:04,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:48:04,442 INFO L225 Difference]: With dead ends: 478 [2022-04-05 23:48:04,442 INFO L226 Difference]: Without dead ends: 476 [2022-04-05 23:48:04,443 INFO L912 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 [2022-04-05 23:48:04,443 INFO L913 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 [2022-04-05 23:48:04,443 INFO L914 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] [2022-04-05 23:48:04,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-04-05 23:48:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 472. [2022-04-05 23:48:04,496 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) [2022-04-05 23:48:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 473 transitions. [2022-04-05 23:48:04,496 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 473 transitions. Word has length 462 [2022-04-05 23:48:04,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:48:04,497 INFO L478 AbstractCegarLoop]: Abstraction has 472 states and 473 transitions. [2022-04-05 23:48:04,497 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.8181818181818183) internal successors, (186), 63 states have internal predecessors, (186), 58 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-04-05 23:48:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 473 transitions. [2022-04-05 23:48:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-04-05 23:48:04,498 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:48:04,499 INFO L499 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:48:04,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-04-05 23:48:04,699 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:48:04,699 INFO L403 AbstractCegarLoop]: === Iteration 115 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:48:04,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:48:04,699 INFO L85 PathProgramCache]: Analyzing trace with hash 527468806, now seen corresponding path program 113 times [2022-04-05 23:48:04,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:48:04,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913891413] [2022-04-05 23:48:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:48:04,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:48:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:48:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-04-05 23:48:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:48:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:48:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:48:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:48:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:48:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:48:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:48:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:48:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:48:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:48:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:48:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:48:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:48:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:48:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:48:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:48:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:48:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:48:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:48:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:48:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:48:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:48:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:48:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:48:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 23:48:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 23:48:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 23:48:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 23:48:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 23:48:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 23:48:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 23:48:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 23:48:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 23:48:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 23:48:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 23:48:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 23:48:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 23:48:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 23:48:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 23:48:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 23:48:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 23:48:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 23:48:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 23:48:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 23:48:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 23:48:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 23:48:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 23:48:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 23:48:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-04-05 23:48:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 23:48:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-04-05 23:48:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 23:48:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-04-05 23:48:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 23:48:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-04-05 23:48:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 23:48:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 13053 backedges. 5016 proven. 1653 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 23:48:08,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:48:08,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913891413] [2022-04-05 23:48:08,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913891413] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:48:08,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5563021] [2022-04-05 23:48:08,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:48:08,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:48:08,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:48:08,090 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) [2022-04-05 23:48:08,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-04-05 23:48:08,312 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2022-04-05 23:48:08,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:48:08,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 118 conjunts are in the unsatisfiable core [2022-04-05 23:48:08,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:48:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13053 backedges. 5016 proven. 1653 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 23:48:08,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:48:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 13053 backedges. 5016 proven. 1653 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 23:48:09,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5563021] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:48:09,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:48:09,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 119, 119] total 121 [2022-04-05 23:48:09,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013115488] [2022-04-05 23:48:09,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:48:09,641 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-04-05 23:48:09,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:48:09,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-04-05 23:48:09,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3603, Invalid=10917, Unknown=0, NotChecked=0, Total=14520 [2022-04-05 23:48:09,643 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) [2022-04-05 23:48:14,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:48:14,286 INFO L93 Difference]: Finished difference Result 655 states and 714 transitions. [2022-04-05 23:48:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-04-05 23:48:14,287 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 [2022-04-05 23:48:14,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:48:14,288 INFO L225 Difference]: With dead ends: 655 [2022-04-05 23:48:14,288 INFO L226 Difference]: Without dead ends: 473 [2022-04-05 23:48:14,290 INFO L912 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 [2022-04-05 23:48:14,290 INFO L913 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 [2022-04-05 23:48:14,290 INFO L914 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] [2022-04-05 23:48:14,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-04-05 23:48:14,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2022-04-05 23:48:14,343 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) [2022-04-05 23:48:14,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 474 transitions. [2022-04-05 23:48:14,344 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 474 transitions. Word has length 469 [2022-04-05 23:48:14,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:48:14,344 INFO L478 AbstractCegarLoop]: Abstraction has 473 states and 474 transitions. [2022-04-05 23:48:14,344 INFO L479 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) [2022-04-05 23:48:14,344 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 474 transitions. [2022-04-05 23:48:14,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-04-05 23:48:14,346 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:48:14,346 INFO L499 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:48:14,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-04-05 23:48:14,546 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-04-05 23:48:14,547 INFO L403 AbstractCegarLoop]: === Iteration 116 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:48:14,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:48:14,547 INFO L85 PathProgramCache]: Analyzing trace with hash 380815980, now seen corresponding path program 114 times [2022-04-05 23:48:14,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:48:14,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306363536] [2022-04-05 23:48:14,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:48:14,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:48:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:48:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:48:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:48:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:48:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:48:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:48:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:48:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:48:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:48:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:48:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:48:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:48:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:48:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:48:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:48:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:48:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:48:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:48:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:48:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:48:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:48:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:48:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:48:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:48:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:48:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:48:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:48:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 23:48:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 23:48:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 23:48:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 23:48:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 23:48:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 23:48:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 23:48:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 23:48:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 23:48:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 23:48:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 23:48:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 23:48:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 23:48:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 23:48:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 23:48:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 23:48:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 23:48:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 23:48:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 23:48:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 23:48:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 23:48:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 23:48:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 23:48:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 23:48:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-04-05 23:48:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 23:48:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-04-05 23:48:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 23:48:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-04-05 23:48:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 23:48:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-04-05 23:48:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 13111 backedges. 1767 proven. 4960 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 23:48:15,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:48:15,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306363536] [2022-04-05 23:48:15,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306363536] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:48:15,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116969453] [2022-04-05 23:48:15,948 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:48:15,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:48:15,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:48:15,949 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) [2022-04-05 23:48:15,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-04-05 23:48:16,189 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2022-04-05 23:48:16,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:48:16,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 119 conjunts are in the unsatisfiable core [2022-04-05 23:48:16,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:48:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13111 backedges. 1825 proven. 4902 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 23:48:16,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:48:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13111 backedges. 1825 proven. 4902 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-04-05 23:48:17,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116969453] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:48:17,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:48:17,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 67 [2022-04-05 23:48:17,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358731973] [2022-04-05 23:48:17,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:48:17,542 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-04-05 23:48:17,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:48:17,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-04-05 23:48:17,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1845, Invalid=2577, Unknown=0, NotChecked=0, Total=4422 [2022-04-05 23:48:17,543 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) [2022-04-05 23:48:19,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:48:19,119 INFO L93 Difference]: Finished difference Result 486 states and 488 transitions. [2022-04-05 23:48:19,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-04-05 23:48:19,119 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 [2022-04-05 23:48:19,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:48:19,120 INFO L225 Difference]: With dead ends: 486 [2022-04-05 23:48:19,120 INFO L226 Difference]: Without dead ends: 484 [2022-04-05 23:48:19,121 INFO L912 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 [2022-04-05 23:48:19,122 INFO L913 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 [2022-04-05 23:48:19,122 INFO L914 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] [2022-04-05 23:48:19,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-04-05 23:48:19,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 480. [2022-04-05 23:48:19,175 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) [2022-04-05 23:48:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 481 transitions. [2022-04-05 23:48:19,175 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 481 transitions. Word has length 470 [2022-04-05 23:48:19,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:48:19,176 INFO L478 AbstractCegarLoop]: Abstraction has 480 states and 481 transitions. [2022-04-05 23:48:19,176 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.8208955223880596) internal successors, (189), 64 states have internal predecessors, (189), 59 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-04-05 23:48:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 481 transitions. [2022-04-05 23:48:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-04-05 23:48:19,178 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:48:19,178 INFO L499 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:48:19,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-04-05 23:48:19,391 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-04-05 23:48:19,391 INFO L403 AbstractCegarLoop]: === Iteration 117 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:48:19,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:48:19,392 INFO L85 PathProgramCache]: Analyzing trace with hash -559535097, now seen corresponding path program 115 times [2022-04-05 23:48:19,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:48:19,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164649569] [2022-04-05 23:48:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:48:19,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:48:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:48:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-04-05 23:48:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:48:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:48:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:48:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:48:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:48:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:48:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:48:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:48:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:48:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:48:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:48:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:48:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:48:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:48:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:48:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:48:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:48:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:48:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:48:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:48:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:48:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:48:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:48:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:48:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:48:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 23:48:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 23:48:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 23:48:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 23:48:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 23:48:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 23:48:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 23:48:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 23:48:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 23:48:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 23:48:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 23:48:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 23:48:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 23:48:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 23:48:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 23:48:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 23:48:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 23:48:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 23:48:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 23:48:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 23:48:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 23:48:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 23:48:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 23:48:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 23:48:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-04-05 23:48:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 23:48:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-04-05 23:48:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 23:48:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-04-05 23:48:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 23:48:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-04-05 23:48:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 23:48:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 13514 backedges. 5191 proven. 1711 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 23:48:22,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:48:22,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164649569] [2022-04-05 23:48:22,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164649569] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:48:22,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465219024] [2022-04-05 23:48:22,890 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:48:22,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:48:22,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:48:22,891 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) [2022-04-05 23:48:22,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-04-05 23:48:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:23,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 120 conjunts are in the unsatisfiable core [2022-04-05 23:48:23,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:48:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13514 backedges. 5191 proven. 1711 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 23:48:23,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:48:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 13514 backedges. 5191 proven. 1711 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 23:48:24,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465219024] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:48:24,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:48:24,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 121, 121] total 123 [2022-04-05 23:48:24,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671167625] [2022-04-05 23:48:24,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:48:24,367 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-04-05 23:48:24,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:48:24,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-04-05 23:48:24,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3724, Invalid=11282, Unknown=0, NotChecked=0, Total=15006 [2022-04-05 23:48:24,369 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) [2022-04-05 23:48:28,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:48:28,846 INFO L93 Difference]: Finished difference Result 666 states and 726 transitions. [2022-04-05 23:48:28,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-04-05 23:48:28,846 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 [2022-04-05 23:48:28,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:48:28,848 INFO L225 Difference]: With dead ends: 666 [2022-04-05 23:48:28,848 INFO L226 Difference]: Without dead ends: 481 [2022-04-05 23:48:28,851 INFO L912 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 [2022-04-05 23:48:28,851 INFO L913 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 [2022-04-05 23:48:28,851 INFO L914 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] [2022-04-05 23:48:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-04-05 23:48:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2022-04-05 23:48:28,909 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) [2022-04-05 23:48:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 482 transitions. [2022-04-05 23:48:28,910 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 482 transitions. Word has length 477 [2022-04-05 23:48:28,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:48:28,910 INFO L478 AbstractCegarLoop]: Abstraction has 481 states and 482 transitions. [2022-04-05 23:48:28,910 INFO L479 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) [2022-04-05 23:48:28,910 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 482 transitions. [2022-04-05 23:48:28,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-04-05 23:48:28,912 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:48:28,912 INFO L499 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:48:28,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-04-05 23:48:29,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:48:29,112 INFO L403 AbstractCegarLoop]: === Iteration 118 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:48:29,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:48:29,113 INFO L85 PathProgramCache]: Analyzing trace with hash -413423763, now seen corresponding path program 116 times [2022-04-05 23:48:29,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:48:29,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895126654] [2022-04-05 23:48:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:48:29,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:48:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:48:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:48:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:48:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:48:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:48:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:48:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:48:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:48:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:48:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:48:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:48:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:48:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:48:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:48:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:48:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:48:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:48:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:48:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:48:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:48:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:48:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:48:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:48:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:48:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:48:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:48:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:48:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:48:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 23:48:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 23:48:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 23:48:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 23:48:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 23:48:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 23:48:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 23:48:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 23:48:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 23:48:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 23:48:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 23:48:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 23:48:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 23:48:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 23:48:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 23:48:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 23:48:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 23:48:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 23:48:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 23:48:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 23:48:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 23:48:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 23:48:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 23:48:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 23:48:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-04-05 23:48:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 23:48:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-04-05 23:48:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 23:48:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-04-05 23:48:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 23:48:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-04-05 23:48:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 13573 backedges. 1827 proven. 5134 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 23:48:30,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:48:30,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895126654] [2022-04-05 23:48:30,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895126654] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:48:30,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197214936] [2022-04-05 23:48:30,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:48:30,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:48:30,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:48:30,581 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) [2022-04-05 23:48:30,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-04-05 23:48:30,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:48:30,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:48:30,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 121 conjunts are in the unsatisfiable core [2022-04-05 23:48:30,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:48:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 13573 backedges. 1886 proven. 5075 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 23:48:31,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:48:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13573 backedges. 1886 proven. 5075 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-04-05 23:48:32,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197214936] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:48:32,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:48:32,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 68 [2022-04-05 23:48:32,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437252576] [2022-04-05 23:48:32,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:48:32,091 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-04-05 23:48:32,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:48:32,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-04-05 23:48:32,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1906, Invalid=2650, Unknown=0, NotChecked=0, Total=4556 [2022-04-05 23:48:32,092 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) [2022-04-05 23:48:33,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:48:33,653 INFO L93 Difference]: Finished difference Result 494 states and 496 transitions. [2022-04-05 23:48:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-04-05 23:48:33,653 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 [2022-04-05 23:48:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:48:33,654 INFO L225 Difference]: With dead ends: 494 [2022-04-05 23:48:33,654 INFO L226 Difference]: Without dead ends: 492 [2022-04-05 23:48:33,656 INFO L912 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 [2022-04-05 23:48:33,656 INFO L913 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 [2022-04-05 23:48:33,656 INFO L914 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] [2022-04-05 23:48:33,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-04-05 23:48:33,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 488. [2022-04-05 23:48:33,736 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) [2022-04-05 23:48:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 489 transitions. [2022-04-05 23:48:33,737 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 489 transitions. Word has length 478 [2022-04-05 23:48:33,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:48:33,737 INFO L478 AbstractCegarLoop]: Abstraction has 488 states and 489 transitions. [2022-04-05 23:48:33,737 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.823529411764706) internal successors, (192), 65 states have internal predecessors, (192), 60 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-04-05 23:48:33,737 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 489 transitions. [2022-04-05 23:48:33,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-04-05 23:48:33,739 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:48:33,739 INFO L499 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:48:33,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-04-05 23:48:33,939 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:48:33,940 INFO L403 AbstractCegarLoop]: === Iteration 119 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:48:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:48:33,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1285282790, now seen corresponding path program 117 times [2022-04-05 23:48:33,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:48:33,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196719543] [2022-04-05 23:48:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:48:33,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:48:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:48:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-05 23:48:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:48:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:48:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:48:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:48:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:48:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:48:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:48:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:48:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:48:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:48:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:48:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:48:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:48:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:48:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:48:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:48:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:48:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:48:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:48:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:48:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:48:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:48:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:48:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:48:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:48:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:48:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 23:48:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 23:48:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 23:48:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 23:48:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 23:48:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 23:48:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 23:48:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 23:48:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 23:48:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 23:48:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 23:48:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 23:48:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 23:48:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 23:48:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 23:48:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 23:48:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 23:48:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 23:48:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 23:48:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 23:48:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 23:48:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 23:48:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 23:48:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 23:48:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-04-05 23:48:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 23:48:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-04-05 23:48:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 23:48:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-04-05 23:48:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 23:48:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-04-05 23:48:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 23:48:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 13983 backedges. 5369 proven. 1770 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 23:48:37,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:48:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196719543] [2022-04-05 23:48:37,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196719543] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:48:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268473930] [2022-04-05 23:48:37,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:48:37,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:48:37,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:48:37,514 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) [2022-04-05 23:48:37,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-04-05 23:48:37,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2022-04-05 23:48:37,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:48:37,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 122 conjunts are in the unsatisfiable core [2022-04-05 23:48:37,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:48:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 13983 backedges. 5369 proven. 1770 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 23:48:38,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:48:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 13983 backedges. 5369 proven. 1770 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 23:48:39,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268473930] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:48:39,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:48:39,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 123, 123] total 125 [2022-04-05 23:48:39,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111522882] [2022-04-05 23:48:39,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:48:39,148 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-04-05 23:48:39,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:48:39,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-04-05 23:48:39,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3847, Invalid=11653, Unknown=0, NotChecked=0, Total=15500 [2022-04-05 23:48:39,150 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) [2022-04-05 23:48:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:48:44,076 INFO L93 Difference]: Finished difference Result 677 states and 738 transitions. [2022-04-05 23:48:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-04-05 23:48:44,077 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 [2022-04-05 23:48:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:48:44,078 INFO L225 Difference]: With dead ends: 677 [2022-04-05 23:48:44,078 INFO L226 Difference]: Without dead ends: 489 [2022-04-05 23:48:44,081 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 1088 SyntacticMatches, 1 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14751 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=11654, Invalid=48616, Unknown=0, NotChecked=0, Total=60270 [2022-04-05 23:48:44,081 INFO L913 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 [2022-04-05 23:48:44,081 INFO L914 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] [2022-04-05 23:48:44,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-04-05 23:48:44,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-04-05 23:48:44,138 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) [2022-04-05 23:48:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 490 transitions. [2022-04-05 23:48:44,139 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 490 transitions. Word has length 485 [2022-04-05 23:48:44,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:48:44,139 INFO L478 AbstractCegarLoop]: Abstraction has 489 states and 490 transitions. [2022-04-05 23:48:44,139 INFO L479 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) [2022-04-05 23:48:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 490 transitions. [2022-04-05 23:48:44,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-04-05 23:48:44,141 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:48:44,141 INFO L499 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:48:44,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-04-05 23:48:44,341 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-04-05 23:48:44,341 INFO L403 AbstractCegarLoop]: === Iteration 120 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:48:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:48:44,342 INFO L85 PathProgramCache]: Analyzing trace with hash -991260340, now seen corresponding path program 118 times [2022-04-05 23:48:44,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:48:44,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732433945] [2022-04-05 23:48:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:48:44,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:48:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:48:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:48:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:48:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:48:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:48:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:48:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:48:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:48:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:48:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:48:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:48:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:48:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:48:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:48:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:48:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:48:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:48:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:48:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:48:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:48:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:48:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:48:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:48:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:48:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:48:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:48:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:48:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:48:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 23:48:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 23:48:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 23:48:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 23:48:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 23:48:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 23:48:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 23:48:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 23:48:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 23:48:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 23:48:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 23:48:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 23:48:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 23:48:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 23:48:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 23:48:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 23:48:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 23:48:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-04-05 23:48:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 23:48:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-04-05 23:48:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 23:48:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-04-05 23:48:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 23:48:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-04-05 23:48:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 23:48:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-04-05 23:48:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 23:48:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-04-05 23:48:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 23:48:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-04-05 23:48:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 23:48:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-04-05 23:48:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:45,832 INFO L134 CoverageAnalysis]: Checked inductivity of 14043 backedges. 1888 proven. 5311 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 23:48:45,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:48:45,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732433945] [2022-04-05 23:48:45,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732433945] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:48:45,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263016586] [2022-04-05 23:48:45,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:48:45,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:48:45,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:48:45,834 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) [2022-04-05 23:48:45,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-04-05 23:48:46,008 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:48:46,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:48:46,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 123 conjunts are in the unsatisfiable core [2022-04-05 23:48:46,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:48:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 14043 backedges. 1948 proven. 5251 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 23:48:46,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:48:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 14043 backedges. 1948 proven. 5251 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-04-05 23:48:47,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263016586] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:48:47,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:48:47,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 69 [2022-04-05 23:48:47,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318811121] [2022-04-05 23:48:47,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:48:47,390 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-04-05 23:48:47,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:48:47,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-04-05 23:48:47,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1968, Invalid=2724, Unknown=0, NotChecked=0, Total=4692 [2022-04-05 23:48:47,391 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) [2022-04-05 23:48:49,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:48:49,059 INFO L93 Difference]: Finished difference Result 502 states and 504 transitions. [2022-04-05 23:48:49,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-04-05 23:48:49,059 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 [2022-04-05 23:48:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:48:49,060 INFO L225 Difference]: With dead ends: 502 [2022-04-05 23:48:49,060 INFO L226 Difference]: Without dead ends: 500 [2022-04-05 23:48:49,062 INFO L912 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 [2022-04-05 23:48:49,062 INFO L913 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 [2022-04-05 23:48:49,062 INFO L914 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] [2022-04-05 23:48:49,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-04-05 23:48:49,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 496. [2022-04-05 23:48:49,129 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) [2022-04-05 23:48:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 497 transitions. [2022-04-05 23:48:49,130 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 497 transitions. Word has length 486 [2022-04-05 23:48:49,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:48:49,130 INFO L478 AbstractCegarLoop]: Abstraction has 496 states and 497 transitions. [2022-04-05 23:48:49,130 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.8260869565217392) internal successors, (195), 66 states have internal predecessors, (195), 61 states have call successors, (64), 4 states have call predecessors, (64), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-04-05 23:48:49,130 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 497 transitions. [2022-04-05 23:48:49,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2022-04-05 23:48:49,132 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:48:49,132 INFO L499 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:48:49,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-04-05 23:48:49,333 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2022-04-05 23:48:49,333 INFO L403 AbstractCegarLoop]: === Iteration 121 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:48:49,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:48:49,334 INFO L85 PathProgramCache]: Analyzing trace with hash 575334695, now seen corresponding path program 119 times [2022-04-05 23:48:49,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:48:49,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784918817] [2022-04-05 23:48:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:48:49,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:48:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:48:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-05 23:48:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:48:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:48:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:48:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:48:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:48:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:48:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:48:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:48:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:48:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:48:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:48:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:48:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:48:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:48:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:48:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:48:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:48:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:48:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:48:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:48:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:48:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:48:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:48:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:48:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:48:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:48:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 23:48:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 23:48:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 23:48:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 23:48:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 23:48:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 23:48:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 23:48:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 23:48:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 23:48:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 23:48:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:52,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 23:48:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 23:48:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 23:48:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 23:48:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 23:48:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 23:48:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 23:48:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-04-05 23:48:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 23:48:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-04-05 23:48:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 23:48:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-04-05 23:48:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 23:48:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-04-05 23:48:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 23:48:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-04-05 23:48:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 23:48:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-04-05 23:48:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 23:48:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-04-05 23:48:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 23:48:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-04-05 23:48:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 23:48:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:48:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14460 backedges. 5550 proven. 1830 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 23:48:53,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:48:53,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784918817] [2022-04-05 23:48:53,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784918817] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:48:53,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707515134] [2022-04-05 23:48:53,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:48:53,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:48:53,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:48:53,031 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) [2022-04-05 23:48:53,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-04-05 23:48:53,265 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2022-04-05 23:48:53,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:48:53,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 124 conjunts are in the unsatisfiable core [2022-04-05 23:48:53,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:48:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14460 backedges. 5550 proven. 1830 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 23:48:53,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:48:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 14460 backedges. 5550 proven. 1830 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 23:48:54,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707515134] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:48:54,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:48:54,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 125, 125] total 127 [2022-04-05 23:48:54,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726188865] [2022-04-05 23:48:54,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:48:54,661 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-04-05 23:48:54,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:48:54,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-04-05 23:48:54,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3972, Invalid=12030, Unknown=0, NotChecked=0, Total=16002 [2022-04-05 23:48:54,663 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) [2022-04-05 23:48:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:48:59,686 INFO L93 Difference]: Finished difference Result 688 states and 750 transitions. [2022-04-05 23:48:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-04-05 23:48:59,687 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 [2022-04-05 23:48:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:48:59,688 INFO L225 Difference]: With dead ends: 688 [2022-04-05 23:48:59,688 INFO L226 Difference]: Without dead ends: 497 [2022-04-05 23:48:59,691 INFO L912 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 [2022-04-05 23:48:59,691 INFO L913 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 [2022-04-05 23:48:59,691 INFO L914 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] [2022-04-05 23:48:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-04-05 23:48:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2022-04-05 23:48:59,763 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) [2022-04-05 23:48:59,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 498 transitions. [2022-04-05 23:48:59,763 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 498 transitions. Word has length 493 [2022-04-05 23:48:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:48:59,764 INFO L478 AbstractCegarLoop]: Abstraction has 497 states and 498 transitions. [2022-04-05 23:48:59,764 INFO L479 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) [2022-04-05 23:48:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 498 transitions. [2022-04-05 23:48:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-04-05 23:48:59,766 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:48:59,766 INFO L499 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:48:59,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-04-05 23:48:59,976 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:48:59,976 INFO L403 AbstractCegarLoop]: === Iteration 122 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:48:59,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:48:59,977 INFO L85 PathProgramCache]: Analyzing trace with hash -497493875, now seen corresponding path program 120 times [2022-04-05 23:48:59,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:48:59,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133141572] [2022-04-05 23:48:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:48:59,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:49:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:49:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:49:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:49:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:49:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:49:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:49:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:49:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:49:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:49:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:49:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:49:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:49:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:49:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:49:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:49:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:49:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:49:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:49:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:49:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:49:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:49:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:49:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 23:49:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 23:49:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 23:49:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 23:49:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 23:49:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 23:49:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 23:49:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 23:49:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 23:49:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 23:49:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 23:49:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 23:49:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 23:49:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 23:49:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 23:49:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 23:49:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 23:49:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 23:49:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 23:49:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 23:49:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 23:49:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 23:49:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 23:49:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 23:49:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-04-05 23:49:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 23:49:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-04-05 23:49:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 23:49:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-04-05 23:49:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 23:49:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-04-05 23:49:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 23:49:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-04-05 23:49:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 23:49:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-04-05 23:49:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 23:49:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-04-05 23:49:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 23:49:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-04-05 23:49:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 1950 proven. 5491 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 23:49:01,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:49:01,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133141572] [2022-04-05 23:49:01,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133141572] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:49:01,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410489138] [2022-04-05 23:49:01,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:49:01,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:49:01,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:49:01,509 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) [2022-04-05 23:49:01,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-04-05 23:49:01,761 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2022-04-05 23:49:01,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:49:01,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 125 conjunts are in the unsatisfiable core [2022-04-05 23:49:01,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:49:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 2011 proven. 5430 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 23:49:02,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:49:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14521 backedges. 2011 proven. 5430 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-04-05 23:49:03,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410489138] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:49:03,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:49:03,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 70 [2022-04-05 23:49:03,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7786997] [2022-04-05 23:49:03,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:49:03,172 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-04-05 23:49:03,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:49:03,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-04-05 23:49:03,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2031, Invalid=2799, Unknown=0, NotChecked=0, Total=4830 [2022-04-05 23:49:03,173 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) [2022-04-05 23:49:04,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:49:04,875 INFO L93 Difference]: Finished difference Result 510 states and 512 transitions. [2022-04-05 23:49:04,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-04-05 23:49:04,875 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 [2022-04-05 23:49:04,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:49:04,876 INFO L225 Difference]: With dead ends: 510 [2022-04-05 23:49:04,876 INFO L226 Difference]: Without dead ends: 508 [2022-04-05 23:49:04,877 INFO L912 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 [2022-04-05 23:49:04,877 INFO L913 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 [2022-04-05 23:49:04,877 INFO L914 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] [2022-04-05 23:49:04,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-04-05 23:49:04,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 504. [2022-04-05 23:49:04,936 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) [2022-04-05 23:49:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 505 transitions. [2022-04-05 23:49:04,936 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 505 transitions. Word has length 494 [2022-04-05 23:49:04,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:49:04,936 INFO L478 AbstractCegarLoop]: Abstraction has 504 states and 505 transitions. [2022-04-05 23:49:04,937 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.8285714285714287) internal successors, (198), 67 states have internal predecessors, (198), 62 states have call successors, (65), 4 states have call predecessors, (65), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-04-05 23:49:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 505 transitions. [2022-04-05 23:49:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-04-05 23:49:04,938 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:49:04,938 INFO L499 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:49:04,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-04-05 23:49:05,139 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:49:05,139 INFO L403 AbstractCegarLoop]: === Iteration 123 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:49:05,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:49:05,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2135218490, now seen corresponding path program 121 times [2022-04-05 23:49:05,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:49:05,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913452161] [2022-04-05 23:49:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:49:05,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:49:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:49:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-04-05 23:49:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:49:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:49:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:49:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:49:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:49:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:49:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:49:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:49:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:49:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:49:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:49:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:49:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:49:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:49:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:49:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:49:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:49:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:49:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:49:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:49:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 23:49:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 23:49:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 23:49:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 23:49:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 23:49:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 23:49:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 23:49:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 23:49:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 23:49:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 23:49:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 23:49:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 23:49:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 23:49:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 23:49:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 23:49:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 23:49:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 23:49:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 23:49:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 23:49:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 23:49:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 23:49:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 23:49:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 23:49:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 23:49:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-04-05 23:49:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 23:49:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-04-05 23:49:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 23:49:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-04-05 23:49:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 23:49:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-04-05 23:49:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 23:49:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-04-05 23:49:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 23:49:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-04-05 23:49:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 23:49:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-04-05 23:49:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 23:49:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-04-05 23:49:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-05 23:49:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14945 backedges. 5734 proven. 1891 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-04-05 23:49:08,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:49:08,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913452161] [2022-04-05 23:49:08,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913452161] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:49:08,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812958610] [2022-04-05 23:49:08,962 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:49:08,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:49:08,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:49:08,963 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) [2022-04-05 23:49:08,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-04-05 23:49:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:09,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 126 conjunts are in the unsatisfiable core [2022-04-05 23:49:09,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:49:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 14945 backedges. 5734 proven. 1891 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-04-05 23:49:09,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:49:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 14945 backedges. 5734 proven. 1891 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-04-05 23:49:10,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812958610] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:49:10,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:49:10,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 127, 127] total 129 [2022-04-05 23:49:10,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104595215] [2022-04-05 23:49:10,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:49:10,531 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-04-05 23:49:10,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:49:10,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-04-05 23:49:10,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=12413, Unknown=0, NotChecked=0, Total=16512 [2022-04-05 23:49:10,533 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) [2022-04-05 23:49:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:49:15,844 INFO L93 Difference]: Finished difference Result 699 states and 762 transitions. [2022-04-05 23:49:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-04-05 23:49:15,844 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 [2022-04-05 23:49:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:49:15,845 INFO L225 Difference]: With dead ends: 699 [2022-04-05 23:49:15,845 INFO L226 Difference]: Without dead ends: 505 [2022-04-05 23:49:15,848 INFO L912 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 [2022-04-05 23:49:15,849 INFO L913 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 [2022-04-05 23:49:15,849 INFO L914 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] [2022-04-05 23:49:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-04-05 23:49:15,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2022-04-05 23:49:15,910 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) [2022-04-05 23:49:15,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 506 transitions. [2022-04-05 23:49:15,910 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 506 transitions. Word has length 501 [2022-04-05 23:49:15,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:49:15,910 INFO L478 AbstractCegarLoop]: Abstraction has 505 states and 506 transitions. [2022-04-05 23:49:15,911 INFO L479 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) [2022-04-05 23:49:15,911 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 506 transitions. [2022-04-05 23:49:15,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2022-04-05 23:49:15,912 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:49:15,913 INFO L499 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:49:15,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-04-05 23:49:16,114 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:49:16,114 INFO L403 AbstractCegarLoop]: === Iteration 124 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:49:16,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:49:16,114 INFO L85 PathProgramCache]: Analyzing trace with hash -626110420, now seen corresponding path program 122 times [2022-04-05 23:49:16,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:49:16,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716021196] [2022-04-05 23:49:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:49:16,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:49:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:49:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:49:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:49:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:49:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:49:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:49:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:49:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:49:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:49:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:49:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:49:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:49:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:49:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:49:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:49:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:49:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:49:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:49:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:49:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:49:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:49:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:49:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:49:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 23:49:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 23:49:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 23:49:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 23:49:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 23:49:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 23:49:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 23:49:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 23:49:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 23:49:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 23:49:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 23:49:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 23:49:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 23:49:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 23:49:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 23:49:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 23:49:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 23:49:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 23:49:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 23:49:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 23:49:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 23:49:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 23:49:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 23:49:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 23:49:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-04-05 23:49:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 23:49:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-04-05 23:49:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 23:49:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-04-05 23:49:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 23:49:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-04-05 23:49:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 23:49:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-04-05 23:49:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 23:49:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-04-05 23:49:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 23:49:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-04-05 23:49:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 23:49:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-04-05 23:49:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 15007 backedges. 2013 proven. 5674 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-04-05 23:49:17,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:49:17,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716021196] [2022-04-05 23:49:17,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716021196] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:49:17,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137464441] [2022-04-05 23:49:17,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:49:17,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:49:17,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:49:17,709 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) [2022-04-05 23:49:17,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-04-05 23:49:17,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:49:17,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:49:17,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 127 conjunts are in the unsatisfiable core [2022-04-05 23:49:17,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:49:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 15007 backedges. 2075 proven. 5612 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-04-05 23:49:18,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:49:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 15007 backedges. 2075 proven. 5612 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2022-04-05 23:49:19,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137464441] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:49:19,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:49:19,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 71 [2022-04-05 23:49:19,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909334637] [2022-04-05 23:49:19,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:49:19,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-04-05 23:49:19,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:49:19,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-04-05 23:49:19,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2095, Invalid=2875, Unknown=0, NotChecked=0, Total=4970 [2022-04-05 23:49:19,279 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) [2022-04-05 23:49:21,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:49:21,056 INFO L93 Difference]: Finished difference Result 518 states and 520 transitions. [2022-04-05 23:49:21,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-04-05 23:49:21,057 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 [2022-04-05 23:49:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:49:21,058 INFO L225 Difference]: With dead ends: 518 [2022-04-05 23:49:21,058 INFO L226 Difference]: Without dead ends: 516 [2022-04-05 23:49:21,060 INFO L912 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 [2022-04-05 23:49:21,060 INFO L913 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 [2022-04-05 23:49:21,060 INFO L914 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] [2022-04-05 23:49:21,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-04-05 23:49:21,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 512. [2022-04-05 23:49:21,131 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) [2022-04-05 23:49:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 513 transitions. [2022-04-05 23:49:21,132 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 513 transitions. Word has length 502 [2022-04-05 23:49:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:49:21,132 INFO L478 AbstractCegarLoop]: Abstraction has 512 states and 513 transitions. [2022-04-05 23:49:21,133 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.8309859154929575) internal successors, (201), 68 states have internal predecessors, (201), 63 states have call successors, (66), 4 states have call predecessors, (66), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-04-05 23:49:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 513 transitions. [2022-04-05 23:49:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-04-05 23:49:21,134 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:49:21,134 INFO L499 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:49:21,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-04-05 23:49:21,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-04-05 23:49:21,335 INFO L403 AbstractCegarLoop]: === Iteration 125 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:49:21,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:49:21,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1619218873, now seen corresponding path program 123 times [2022-04-05 23:49:21,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:49:21,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120229374] [2022-04-05 23:49:21,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:49:21,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:49:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:49:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-04-05 23:49:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:49:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:49:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:49:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:49:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:49:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:49:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:49:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:49:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:49:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:49:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:49:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:49:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:49:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:49:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:49:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:49:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:49:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:49:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:49:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:49:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:49:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 23:49:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 23:49:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 23:49:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 23:49:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 23:49:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 23:49:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 23:49:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 23:49:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 23:49:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 23:49:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 23:49:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 23:49:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 23:49:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 23:49:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 23:49:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 23:49:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 23:49:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 23:49:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 23:49:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 23:49:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 23:49:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 23:49:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 23:49:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 23:49:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-04-05 23:49:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 23:49:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-04-05 23:49:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 23:49:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-04-05 23:49:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 23:49:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-04-05 23:49:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 23:49:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-04-05 23:49:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 23:49:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-04-05 23:49:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 23:49:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-04-05 23:49:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 23:49:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-04-05 23:49:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-05 23:49:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 15438 backedges. 5921 proven. 1953 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 23:49:25,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:49:25,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120229374] [2022-04-05 23:49:25,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120229374] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:49:25,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222872095] [2022-04-05 23:49:25,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:49:25,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:49:25,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:49:25,280 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) [2022-04-05 23:49:25,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-04-05 23:49:25,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2022-04-05 23:49:25,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:49:25,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 128 conjunts are in the unsatisfiable core [2022-04-05 23:49:25,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:49:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 15438 backedges. 5921 proven. 1953 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 23:49:26,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:49:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 15438 backedges. 5921 proven. 1953 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 23:49:26,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222872095] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:49:26,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:49:26,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 129, 129] total 131 [2022-04-05 23:49:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587658772] [2022-04-05 23:49:26,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:49:26,982 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-04-05 23:49:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:49:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-04-05 23:49:26,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4228, Invalid=12802, Unknown=0, NotChecked=0, Total=17030 [2022-04-05 23:49:26,983 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) [2022-04-05 23:49:32,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:49:32,168 INFO L93 Difference]: Finished difference Result 710 states and 774 transitions. [2022-04-05 23:49:32,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-04-05 23:49:32,169 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 [2022-04-05 23:49:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:49:32,170 INFO L225 Difference]: With dead ends: 710 [2022-04-05 23:49:32,170 INFO L226 Difference]: Without dead ends: 513 [2022-04-05 23:49:32,173 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1399 GetRequests, 1142 SyntacticMatches, 1 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16245 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=12803, Invalid=53503, Unknown=0, NotChecked=0, Total=66306 [2022-04-05 23:49:32,173 INFO L913 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 [2022-04-05 23:49:32,173 INFO L914 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] [2022-04-05 23:49:32,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-04-05 23:49:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2022-04-05 23:49:32,234 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) [2022-04-05 23:49:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 514 transitions. [2022-04-05 23:49:32,235 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 514 transitions. Word has length 509 [2022-04-05 23:49:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:49:32,235 INFO L478 AbstractCegarLoop]: Abstraction has 513 states and 514 transitions. [2022-04-05 23:49:32,235 INFO L479 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) [2022-04-05 23:49:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 514 transitions. [2022-04-05 23:49:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2022-04-05 23:49:32,237 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:49:32,237 INFO L499 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:49:32,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-04-05 23:49:32,438 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-04-05 23:49:32,438 INFO L403 AbstractCegarLoop]: === Iteration 126 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:49:32,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:49:32,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1601900973, now seen corresponding path program 124 times [2022-04-05 23:49:32,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:49:32,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295124225] [2022-04-05 23:49:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:49:32,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:49:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:33,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:49:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:33,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:49:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:49:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:33,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:49:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:33,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:49:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:33,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:49:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:33,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:49:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:33,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:49:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:33,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:49:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:33,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:49:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:33,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:49:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:33,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:49:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:49:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:49:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:49:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:49:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:49:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:49:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:49:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:49:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:49:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:49:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:49:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:49:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 23:49:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 23:49:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 23:49:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 23:49:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 23:49:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 23:49:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 23:49:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 23:49:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 23:49:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 23:49:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 23:49:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 23:49:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 23:49:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 23:49:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 23:49:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 23:49:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 23:49:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 23:49:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 23:49:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 23:49:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 23:49:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 23:49:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 23:49:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 23:49:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-04-05 23:49:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 23:49:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-04-05 23:49:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 23:49:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-04-05 23:49:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 23:49:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-04-05 23:49:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 23:49:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-04-05 23:49:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 23:49:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-04-05 23:49:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 23:49:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-04-05 23:49:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 23:49:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-04-05 23:49:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 15501 backedges. 2077 proven. 5860 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 23:49:34,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:49:34,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295124225] [2022-04-05 23:49:34,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295124225] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:49:34,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328958321] [2022-04-05 23:49:34,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:49:34,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:49:34,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:49:34,067 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) [2022-04-05 23:49:34,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-04-05 23:49:34,229 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:49:34,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:49:34,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 129 conjunts are in the unsatisfiable core [2022-04-05 23:49:34,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:49:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 15501 backedges. 2140 proven. 5797 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 23:49:34,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:49:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 15501 backedges. 2140 proven. 5797 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-04-05 23:49:35,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328958321] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:49:35,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:49:35,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 68] total 72 [2022-04-05 23:49:35,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009548831] [2022-04-05 23:49:35,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:49:35,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-04-05 23:49:35,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:49:35,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-04-05 23:49:35,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2160, Invalid=2952, Unknown=0, NotChecked=0, Total=5112 [2022-04-05 23:49:35,683 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) [2022-04-05 23:49:37,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:49:37,381 INFO L93 Difference]: Finished difference Result 526 states and 528 transitions. [2022-04-05 23:49:37,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-04-05 23:49:37,382 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 [2022-04-05 23:49:37,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:49:37,383 INFO L225 Difference]: With dead ends: 526 [2022-04-05 23:49:37,383 INFO L226 Difference]: Without dead ends: 524 [2022-04-05 23:49:37,384 INFO L912 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 [2022-04-05 23:49:37,384 INFO L913 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 [2022-04-05 23:49:37,384 INFO L914 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] [2022-04-05 23:49:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-04-05 23:49:37,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 520. [2022-04-05 23:49:37,457 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) [2022-04-05 23:49:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 521 transitions. [2022-04-05 23:49:37,457 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 521 transitions. Word has length 510 [2022-04-05 23:49:37,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:49:37,458 INFO L478 AbstractCegarLoop]: Abstraction has 520 states and 521 transitions. [2022-04-05 23:49:37,458 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.8333333333333335) internal successors, (204), 69 states have internal predecessors, (204), 64 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-04-05 23:49:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 521 transitions. [2022-04-05 23:49:37,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-04-05 23:49:37,460 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:49:37,460 INFO L499 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:49:37,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-04-05 23:49:37,660 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-04-05 23:49:37,661 INFO L403 AbstractCegarLoop]: === Iteration 127 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:49:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:49:37,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2021419430, now seen corresponding path program 125 times [2022-04-05 23:49:37,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:49:37,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792027356] [2022-04-05 23:49:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:49:37,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:49:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:49:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-04-05 23:49:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:49:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:49:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:49:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:49:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:49:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:49:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:49:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:49:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:49:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:49:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:49:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:49:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:49:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:49:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:49:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:49:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:49:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:49:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:49:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:49:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:49:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:49:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 23:49:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 23:49:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 23:49:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 23:49:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 23:49:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 23:49:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 23:49:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 23:49:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 23:49:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 23:49:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 23:49:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 23:49:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 23:49:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 23:49:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 23:49:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 23:49:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 23:49:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 23:49:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 23:49:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 23:49:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 23:49:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 23:49:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 23:49:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 23:49:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-04-05 23:49:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 23:49:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-04-05 23:49:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 23:49:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-04-05 23:49:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 23:49:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-04-05 23:49:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 23:49:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-04-05 23:49:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 23:49:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-04-05 23:49:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 23:49:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-04-05 23:49:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 23:49:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-04-05 23:49:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-05 23:49:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:41,686 INFO L134 CoverageAnalysis]: Checked inductivity of 15939 backedges. 6111 proven. 2016 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 23:49:41,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:49:41,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792027356] [2022-04-05 23:49:41,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792027356] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:49:41,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697581055] [2022-04-05 23:49:41,686 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:49:41,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:49:41,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:49:41,687 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) [2022-04-05 23:49:41,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-04-05 23:49:41,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2022-04-05 23:49:41,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:49:41,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 130 conjunts are in the unsatisfiable core [2022-04-05 23:49:41,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:49:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15939 backedges. 6111 proven. 2016 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 23:49:42,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:49:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 15939 backedges. 6111 proven. 2016 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 23:49:43,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697581055] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:49:43,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:49:43,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 131, 131] total 133 [2022-04-05 23:49:43,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695768189] [2022-04-05 23:49:43,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:49:43,398 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-04-05 23:49:43,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:49:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-04-05 23:49:43,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4359, Invalid=13197, Unknown=0, NotChecked=0, Total=17556 [2022-04-05 23:49:43,400 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) [2022-04-05 23:49:48,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:49:48,693 INFO L93 Difference]: Finished difference Result 721 states and 786 transitions. [2022-04-05 23:49:48,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-04-05 23:49:48,693 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 [2022-04-05 23:49:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:49:48,694 INFO L225 Difference]: With dead ends: 721 [2022-04-05 23:49:48,694 INFO L226 Difference]: Without dead ends: 521 [2022-04-05 23:49:48,697 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1421 GetRequests, 1160 SyntacticMatches, 1 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16759 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=13198, Invalid=55184, Unknown=0, NotChecked=0, Total=68382 [2022-04-05 23:49:48,697 INFO L913 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 [2022-04-05 23:49:48,697 INFO L914 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] [2022-04-05 23:49:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-04-05 23:49:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2022-04-05 23:49:48,791 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) [2022-04-05 23:49:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 522 transitions. [2022-04-05 23:49:48,792 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 522 transitions. Word has length 517 [2022-04-05 23:49:48,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:49:48,792 INFO L478 AbstractCegarLoop]: Abstraction has 521 states and 522 transitions. [2022-04-05 23:49:48,792 INFO L479 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) [2022-04-05 23:49:48,792 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 522 transitions. [2022-04-05 23:49:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-04-05 23:49:48,794 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:49:48,795 INFO L499 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:49:48,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-04-05 23:49:48,996 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:49:48,996 INFO L403 AbstractCegarLoop]: === Iteration 128 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:49:48,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:49:48,996 INFO L85 PathProgramCache]: Analyzing trace with hash -458488052, now seen corresponding path program 126 times [2022-04-05 23:49:48,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:49:48,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606572632] [2022-04-05 23:49:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:49:48,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:49:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:49:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:49:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:49:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:49:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:49:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:49:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:49:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:49:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:49:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:49:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:49:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:49:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:49:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:49:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:49:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:49:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:49:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:49:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:49:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:49:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:49:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:49:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:49:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:49:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:49:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 23:49:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 23:49:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 23:49:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 23:49:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 23:49:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 23:49:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 23:49:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 23:49:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 23:49:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 23:49:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 23:49:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 23:49:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 23:49:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 23:49:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 23:49:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 23:49:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 23:49:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 23:49:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 23:49:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 23:49:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 23:49:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 23:49:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 23:49:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 23:49:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-04-05 23:49:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 23:49:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-04-05 23:49:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 23:49:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-04-05 23:49:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 23:49:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-04-05 23:49:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 23:49:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-04-05 23:49:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 23:49:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-04-05 23:49:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 23:49:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-04-05 23:49:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 23:49:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-04-05 23:49:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 16003 backedges. 2142 proven. 6049 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 23:49:50,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:49:50,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606572632] [2022-04-05 23:49:50,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606572632] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:49:50,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906340250] [2022-04-05 23:49:50,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:49:50,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:49:50,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:49:50,673 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) [2022-04-05 23:49:50,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-04-05 23:49:50,949 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2022-04-05 23:49:50,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:49:50,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 131 conjunts are in the unsatisfiable core [2022-04-05 23:49:50,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:49:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 16003 backedges. 2206 proven. 5985 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 23:49:51,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:49:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 16003 backedges. 2206 proven. 5985 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-04-05 23:49:52,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906340250] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:49:52,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:49:52,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 73 [2022-04-05 23:49:52,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005855525] [2022-04-05 23:49:52,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:49:52,477 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-04-05 23:49:52,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:49:52,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-04-05 23:49:52,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2226, Invalid=3030, Unknown=0, NotChecked=0, Total=5256 [2022-04-05 23:49:52,478 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) [2022-04-05 23:49:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:49:54,256 INFO L93 Difference]: Finished difference Result 534 states and 536 transitions. [2022-04-05 23:49:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-04-05 23:49:54,257 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 [2022-04-05 23:49:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:49:54,258 INFO L225 Difference]: With dead ends: 534 [2022-04-05 23:49:54,258 INFO L226 Difference]: Without dead ends: 532 [2022-04-05 23:49:54,260 INFO L912 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 [2022-04-05 23:49:54,260 INFO L913 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 [2022-04-05 23:49:54,260 INFO L914 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] [2022-04-05 23:49:54,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-04-05 23:49:54,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 528. [2022-04-05 23:49:54,335 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) [2022-04-05 23:49:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 529 transitions. [2022-04-05 23:49:54,336 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 529 transitions. Word has length 518 [2022-04-05 23:49:54,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:49:54,337 INFO L478 AbstractCegarLoop]: Abstraction has 528 states and 529 transitions. [2022-04-05 23:49:54,337 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.835616438356164) internal successors, (207), 70 states have internal predecessors, (207), 65 states have call successors, (68), 4 states have call predecessors, (68), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2022-04-05 23:49:54,337 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 529 transitions. [2022-04-05 23:49:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-04-05 23:49:54,339 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:49:54,339 INFO L499 BasicCegarLoop]: trace histogram [65, 65, 65, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:49:54,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-04-05 23:49:54,540 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:49:54,540 INFO L403 AbstractCegarLoop]: === Iteration 129 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:49:54,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:49:54,541 INFO L85 PathProgramCache]: Analyzing trace with hash -909280409, now seen corresponding path program 127 times [2022-04-05 23:49:54,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:49:54,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095618222] [2022-04-05 23:49:54,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:49:54,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:49:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:49:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-05 23:49:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:49:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:49:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:49:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:49:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:49:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:49:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:49:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:49:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:49:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:49:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:49:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:49:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:49:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:49:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:49:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:49:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:49:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:49:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:49:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:49:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:49:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:49:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:49:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 23:49:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 23:49:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 23:49:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 23:49:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 23:49:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 23:49:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 23:49:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 23:49:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 23:49:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 23:49:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 23:49:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 23:49:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 23:49:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 23:49:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 23:49:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 23:49:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 23:49:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 23:49:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 23:49:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 23:49:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 23:49:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 23:49:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 23:49:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 23:49:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-04-05 23:49:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 23:49:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-04-05 23:49:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 23:49:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-04-05 23:49:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 23:49:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-04-05 23:49:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 23:49:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-04-05 23:49:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 23:49:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-04-05 23:49:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 23:49:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-04-05 23:49:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 23:49:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-04-05 23:49:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-05 23:49:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6304 proven. 2080 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 23:49:58,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:49:58,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095618222] [2022-04-05 23:49:58,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095618222] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:49:58,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156150374] [2022-04-05 23:49:58,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:49:58,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:49:58,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:49:58,717 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) [2022-04-05 23:49:58,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-04-05 23:49:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:49:58,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 132 conjunts are in the unsatisfiable core [2022-04-05 23:49:58,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:49:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6304 proven. 2080 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 23:49:59,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:50:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6304 proven. 2080 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 23:50:00,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156150374] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:50:00,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:50:00,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 133, 133] total 135 [2022-04-05 23:50:00,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518987809] [2022-04-05 23:50:00,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:50:00,336 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2022-04-05 23:50:00,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:50:00,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2022-04-05 23:50:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4492, Invalid=13598, Unknown=0, NotChecked=0, Total=18090 [2022-04-05 23:50:00,338 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) [2022-04-05 23:50:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:50:05,965 INFO L93 Difference]: Finished difference Result 732 states and 798 transitions. [2022-04-05 23:50:05,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-04-05 23:50:05,965 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 [2022-04-05 23:50:05,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:50:05,966 INFO L225 Difference]: With dead ends: 732 [2022-04-05 23:50:05,966 INFO L226 Difference]: Without dead ends: 529 [2022-04-05 23:50:05,970 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1178 SyntacticMatches, 1 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17281 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=13599, Invalid=56891, Unknown=0, NotChecked=0, Total=70490 [2022-04-05 23:50:05,970 INFO L913 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 [2022-04-05 23:50:05,970 INFO L914 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] [2022-04-05 23:50:05,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-04-05 23:50:06,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2022-04-05 23:50:06,036 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) [2022-04-05 23:50:06,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 530 transitions. [2022-04-05 23:50:06,037 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 530 transitions. Word has length 525 [2022-04-05 23:50:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:50:06,037 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 530 transitions. [2022-04-05 23:50:06,037 INFO L479 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) [2022-04-05 23:50:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 530 transitions. [2022-04-05 23:50:06,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2022-04-05 23:50:06,051 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:50:06,051 INFO L499 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:50:06,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-04-05 23:50:06,252 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-04-05 23:50:06,252 INFO L403 AbstractCegarLoop]: === Iteration 130 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:50:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:50:06,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1571532083, now seen corresponding path program 128 times [2022-04-05 23:50:06,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:50:06,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180189285] [2022-04-05 23:50:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:50:06,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:50:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:50:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:50:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:50:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:50:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:50:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:50:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:50:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:50:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:50:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:50:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:50:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:50:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:50:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:50:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:50:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:50:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:50:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:50:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:50:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:50:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:50:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:50:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:50:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:50:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:50:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:50:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 23:50:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 23:50:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 23:50:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 23:50:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 23:50:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 23:50:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 23:50:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 23:50:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 23:50:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 23:50:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 23:50:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 23:50:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 23:50:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 23:50:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 23:50:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 23:50:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 23:50:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 23:50:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 23:50:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 23:50:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 23:50:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 23:50:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 23:50:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 23:50:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-04-05 23:50:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 23:50:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-04-05 23:50:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 23:50:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-04-05 23:50:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 23:50:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-04-05 23:50:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 23:50:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-04-05 23:50:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 23:50:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-04-05 23:50:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-05 23:50:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-04-05 23:50:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 23:50:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-04-05 23:50:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16513 backedges. 2208 proven. 6241 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 23:50:07,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:50:07,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180189285] [2022-04-05 23:50:07,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180189285] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:50:07,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781454887] [2022-04-05 23:50:07,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:50:07,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:50:07,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:50:07,987 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) [2022-04-05 23:50:08,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-04-05 23:50:08,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:50:08,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:50:08,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1277 conjuncts, 133 conjunts are in the unsatisfiable core [2022-04-05 23:50:08,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:50:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 16513 backedges. 2273 proven. 6176 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 23:50:08,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:50:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 16513 backedges. 2273 proven. 6176 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-04-05 23:50:09,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781454887] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:50:09,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:50:09,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70, 70] total 74 [2022-04-05 23:50:09,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414555891] [2022-04-05 23:50:09,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:50:09,729 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-04-05 23:50:09,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:50:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-04-05 23:50:09,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2293, Invalid=3109, Unknown=0, NotChecked=0, Total=5402 [2022-04-05 23:50:09,730 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) [2022-04-05 23:50:11,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:50:11,581 INFO L93 Difference]: Finished difference Result 542 states and 544 transitions. [2022-04-05 23:50:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-04-05 23:50:11,581 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 [2022-04-05 23:50:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:50:11,582 INFO L225 Difference]: With dead ends: 542 [2022-04-05 23:50:11,582 INFO L226 Difference]: Without dead ends: 540 [2022-04-05 23:50:11,583 INFO L912 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 [2022-04-05 23:50:11,583 INFO L913 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, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 23:50:11,584 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 65 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 23:50:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-04-05 23:50:11,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 536. [2022-04-05 23:50:11,650 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) [2022-04-05 23:50:11,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 537 transitions. [2022-04-05 23:50:11,650 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 537 transitions. Word has length 526 [2022-04-05 23:50:11,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:50:11,651 INFO L478 AbstractCegarLoop]: Abstraction has 536 states and 537 transitions. [2022-04-05 23:50:11,651 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.8378378378378377) internal successors, (210), 71 states have internal predecessors, (210), 66 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-04-05 23:50:11,651 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 537 transitions. [2022-04-05 23:50:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-04-05 23:50:11,653 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:50:11,653 INFO L499 BasicCegarLoop]: trace histogram [66, 66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:50:11,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-04-05 23:50:11,853 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-04-05 23:50:11,853 INFO L403 AbstractCegarLoop]: === Iteration 131 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:50:11,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:50:11,854 INFO L85 PathProgramCache]: Analyzing trace with hash 671982726, now seen corresponding path program 129 times [2022-04-05 23:50:11,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:50:11,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075106421] [2022-04-05 23:50:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:50:11,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:50:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:50:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-05 23:50:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:50:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:50:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:50:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:50:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:50:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:50:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:50:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:50:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:50:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:50:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:50:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:50:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:50:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:50:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:50:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:50:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:50:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:50:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:50:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:50:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:50:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:50:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:50:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:50:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 23:50:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 23:50:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 23:50:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 23:50:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 23:50:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 23:50:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 23:50:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 23:50:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 23:50:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 23:50:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 23:50:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 23:50:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 23:50:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 23:50:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 23:50:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 23:50:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 23:50:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 23:50:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 23:50:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 23:50:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 23:50:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 23:50:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 23:50:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 23:50:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-04-05 23:50:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 23:50:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-04-05 23:50:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 23:50:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-04-05 23:50:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 23:50:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-04-05 23:50:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 23:50:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-04-05 23:50:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 23:50:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-04-05 23:50:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-05 23:50:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-04-05 23:50:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 23:50:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-04-05 23:50:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-05 23:50:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16965 backedges. 6500 proven. 2145 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 23:50:16,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:50:16,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075106421] [2022-04-05 23:50:16,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075106421] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:50:16,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629200309] [2022-04-05 23:50:16,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:50:16,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:50:16,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:50:16,143 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) [2022-04-05 23:50:16,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-04-05 23:50:16,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2022-04-05 23:50:16,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:50:16,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 134 conjunts are in the unsatisfiable core [2022-04-05 23:50:16,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:50:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16965 backedges. 6500 proven. 2145 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 23:50:17,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:50:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 16965 backedges. 6500 proven. 2145 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 23:50:17,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629200309] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:50:17,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:50:17,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 135, 135] total 137 [2022-04-05 23:50:17,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584500493] [2022-04-05 23:50:17,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:50:17,950 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-04-05 23:50:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:50:17,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-04-05 23:50:17,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4627, Invalid=14005, Unknown=0, NotChecked=0, Total=18632 [2022-04-05 23:50:17,951 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) [2022-04-05 23:50:23,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:50:23,489 INFO L93 Difference]: Finished difference Result 743 states and 810 transitions. [2022-04-05 23:50:23,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-04-05 23:50:23,489 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 [2022-04-05 23:50:23,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:50:23,490 INFO L225 Difference]: With dead ends: 743 [2022-04-05 23:50:23,490 INFO L226 Difference]: Without dead ends: 537 [2022-04-05 23:50:23,493 INFO L912 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 [2022-04-05 23:50:23,494 INFO L913 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, 0.8s IncrementalHoareTripleChecker+Time [2022-04-05 23:50:23,494 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 118 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-05 23:50:23,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-04-05 23:50:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2022-04-05 23:50:23,562 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) [2022-04-05 23:50:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 538 transitions. [2022-04-05 23:50:23,563 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 538 transitions. Word has length 533 [2022-04-05 23:50:23,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:50:23,563 INFO L478 AbstractCegarLoop]: Abstraction has 537 states and 538 transitions. [2022-04-05 23:50:23,563 INFO L479 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) [2022-04-05 23:50:23,563 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 538 transitions. [2022-04-05 23:50:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-04-05 23:50:23,565 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:50:23,565 INFO L499 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:50:23,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-04-05 23:50:23,766 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:50:23,766 INFO L403 AbstractCegarLoop]: === Iteration 132 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:50:23,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:50:23,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1492011540, now seen corresponding path program 130 times [2022-04-05 23:50:23,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:50:23,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348681227] [2022-04-05 23:50:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:50:23,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:50:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:50:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:50:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:50:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:50:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:50:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:50:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:50:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:50:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:50:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:50:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:50:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:50:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:50:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:50:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:50:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:50:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:50:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:50:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:50:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:50:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:50:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:50:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:50:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:50:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:50:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:50:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:50:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 23:50:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 23:50:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 23:50:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 23:50:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 23:50:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 23:50:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 23:50:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 23:50:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 23:50:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 23:50:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 23:50:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 23:50:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 23:50:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 23:50:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 23:50:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 23:50:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 23:50:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 23:50:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 23:50:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 23:50:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 23:50:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 23:50:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 23:50:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 23:50:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-04-05 23:50:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 23:50:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-04-05 23:50:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 23:50:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-04-05 23:50:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 23:50:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-04-05 23:50:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 23:50:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-04-05 23:50:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 23:50:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-04-05 23:50:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-05 23:50:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-04-05 23:50:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-05 23:50:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-04-05 23:50:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 17031 backedges. 2275 proven. 6436 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 23:50:25,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:50:25,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348681227] [2022-04-05 23:50:25,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348681227] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:50:25,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346288374] [2022-04-05 23:50:25,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:50:25,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:50:25,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:50:25,534 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) [2022-04-05 23:50:25,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-04-05 23:50:25,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:50:25,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:50:25,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 135 conjunts are in the unsatisfiable core [2022-04-05 23:50:25,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:50:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 17031 backedges. 2341 proven. 6370 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 23:50:26,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:50:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 17031 backedges. 2341 proven. 6370 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-04-05 23:50:27,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346288374] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:50:27,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:50:27,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 75 [2022-04-05 23:50:27,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600899478] [2022-04-05 23:50:27,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:50:27,235 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-04-05 23:50:27,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:50:27,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-04-05 23:50:27,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2361, Invalid=3189, Unknown=0, NotChecked=0, Total=5550 [2022-04-05 23:50:27,236 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) [2022-04-05 23:50:29,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:50:29,111 INFO L93 Difference]: Finished difference Result 550 states and 552 transitions. [2022-04-05 23:50:29,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-04-05 23:50:29,111 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 [2022-04-05 23:50:29,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:50:29,113 INFO L225 Difference]: With dead ends: 550 [2022-04-05 23:50:29,113 INFO L226 Difference]: Without dead ends: 548 [2022-04-05 23:50:29,114 INFO L912 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 [2022-04-05 23:50:29,114 INFO L913 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 [2022-04-05 23:50:29,114 INFO L914 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] [2022-04-05 23:50:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-04-05 23:50:29,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 544. [2022-04-05 23:50:29,196 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) [2022-04-05 23:50:29,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 545 transitions. [2022-04-05 23:50:29,196 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 545 transitions. Word has length 534 [2022-04-05 23:50:29,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:50:29,197 INFO L478 AbstractCegarLoop]: Abstraction has 544 states and 545 transitions. [2022-04-05 23:50:29,197 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.84) internal successors, (213), 72 states have internal predecessors, (213), 67 states have call successors, (70), 4 states have call predecessors, (70), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-04-05 23:50:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 545 transitions. [2022-04-05 23:50:29,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-04-05 23:50:29,199 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:50:29,199 INFO L499 BasicCegarLoop]: trace histogram [67, 67, 67, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:50:29,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-04-05 23:50:29,399 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:50:29,400 INFO L403 AbstractCegarLoop]: === Iteration 133 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:50:29,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:50:29,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1833914503, now seen corresponding path program 131 times [2022-04-05 23:50:29,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:50:29,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306772116] [2022-04-05 23:50:29,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:50:29,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:50:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:50:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-04-05 23:50:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:50:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:50:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:50:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:50:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:50:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:50:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:50:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:50:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:50:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:50:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:50:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:50:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:50:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:50:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:50:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:50:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:50:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:50:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:50:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:50:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:50:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:50:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:50:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:50:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:50:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 23:50:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 23:50:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 23:50:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 23:50:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 23:50:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 23:50:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 23:50:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 23:50:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 23:50:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 23:50:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 23:50:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 23:50:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 23:50:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 23:50:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 23:50:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 23:50:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 23:50:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 23:50:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 23:50:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 23:50:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 23:50:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 23:50:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 23:50:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 23:50:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-04-05 23:50:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 23:50:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-04-05 23:50:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 23:50:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-04-05 23:50:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 23:50:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-04-05 23:50:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 23:50:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-04-05 23:50:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 23:50:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-04-05 23:50:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-05 23:50:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-04-05 23:50:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-05 23:50:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-04-05 23:50:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-05 23:50:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 17490 backedges. 6699 proven. 2211 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-04-05 23:50:33,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:50:33,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306772116] [2022-04-05 23:50:33,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306772116] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:50:33,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016614518] [2022-04-05 23:50:33,821 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:50:33,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:50:33,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:50:33,822 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) [2022-04-05 23:50:33,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-04-05 23:50:34,089 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2022-04-05 23:50:34,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:50:34,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 136 conjunts are in the unsatisfiable core [2022-04-05 23:50:34,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:50:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 17490 backedges. 6699 proven. 2211 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-04-05 23:50:34,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:50:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 17490 backedges. 6699 proven. 2211 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-04-05 23:50:35,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016614518] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:50:35,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:50:35,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 137, 137] total 139 [2022-04-05 23:50:35,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816649712] [2022-04-05 23:50:35,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:50:35,624 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-04-05 23:50:35,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:50:35,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-04-05 23:50:35,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4764, Invalid=14418, Unknown=0, NotChecked=0, Total=19182 [2022-04-05 23:50:35,627 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) [2022-04-05 23:50:41,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:50:41,426 INFO L93 Difference]: Finished difference Result 754 states and 822 transitions. [2022-04-05 23:50:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-04-05 23:50:41,427 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 [2022-04-05 23:50:41,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:50:41,428 INFO L225 Difference]: With dead ends: 754 [2022-04-05 23:50:41,428 INFO L226 Difference]: Without dead ends: 545 [2022-04-05 23:50:41,432 INFO L912 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 [2022-04-05 23:50:41,432 INFO L913 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 [2022-04-05 23:50:41,432 INFO L914 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] [2022-04-05 23:50:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-04-05 23:50:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2022-04-05 23:50:41,520 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) [2022-04-05 23:50:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 546 transitions. [2022-04-05 23:50:41,521 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 546 transitions. Word has length 541 [2022-04-05 23:50:41,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:50:41,521 INFO L478 AbstractCegarLoop]: Abstraction has 545 states and 546 transitions. [2022-04-05 23:50:41,521 INFO L479 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) [2022-04-05 23:50:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 546 transitions. [2022-04-05 23:50:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-04-05 23:50:41,523 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:50:41,523 INFO L499 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:50:41,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-04-05 23:50:41,724 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2022-04-05 23:50:41,724 INFO L403 AbstractCegarLoop]: === Iteration 134 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:50:41,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:50:41,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1190566893, now seen corresponding path program 132 times [2022-04-05 23:50:41,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:50:41,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742835623] [2022-04-05 23:50:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:50:41,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:50:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:50:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:50:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:50:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:50:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:50:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:50:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:50:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:50:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:50:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:50:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:50:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:50:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:50:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:50:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:50:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:50:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:50:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:50:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:50:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:50:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:50:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:50:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:50:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:50:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:50:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:50:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:50:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 23:50:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 23:50:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 23:50:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 23:50:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 23:50:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 23:50:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 23:50:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 23:50:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 23:50:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 23:50:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 23:50:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 23:50:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 23:50:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 23:50:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 23:50:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 23:50:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 23:50:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-04-05 23:50:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 23:50:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-04-05 23:50:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 23:50:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-04-05 23:50:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 23:50:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-04-05 23:50:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 23:50:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-04-05 23:50:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 23:50:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-04-05 23:50:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 23:50:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-04-05 23:50:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 23:50:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-04-05 23:50:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 23:50:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-04-05 23:50:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-05 23:50:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-04-05 23:50:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-05 23:50:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-04-05 23:50:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-05 23:50:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-04-05 23:50:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 17557 backedges. 2343 proven. 6634 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-04-05 23:50:43,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:50:43,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742835623] [2022-04-05 23:50:43,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742835623] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:50:43,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359123178] [2022-04-05 23:50:43,539 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:50:43,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:50:43,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:50:43,540 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) [2022-04-05 23:50:43,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-04-05 23:50:43,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2022-04-05 23:50:43,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:50:43,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 137 conjunts are in the unsatisfiable core [2022-04-05 23:50:43,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:50:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 17557 backedges. 2410 proven. 6567 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-04-05 23:50:44,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:50:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 17557 backedges. 2410 proven. 6567 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2022-04-05 23:50:45,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359123178] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:50:45,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:50:45,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72, 72] total 76 [2022-04-05 23:50:45,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429198207] [2022-04-05 23:50:45,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:50:45,373 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-04-05 23:50:45,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:50:45,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-04-05 23:50:45,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2430, Invalid=3270, Unknown=0, NotChecked=0, Total=5700 [2022-04-05 23:50:45,374 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) [2022-04-05 23:50:47,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:50:47,342 INFO L93 Difference]: Finished difference Result 558 states and 560 transitions. [2022-04-05 23:50:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-04-05 23:50:47,342 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 [2022-04-05 23:50:47,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:50:47,343 INFO L225 Difference]: With dead ends: 558 [2022-04-05 23:50:47,343 INFO L226 Difference]: Without dead ends: 556 [2022-04-05 23:50:47,345 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1428 GetRequests, 1280 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=7282, Invalid=14474, Unknown=0, NotChecked=0, Total=21756 [2022-04-05 23:50:47,345 INFO L913 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 [2022-04-05 23:50:47,345 INFO L914 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] [2022-04-05 23:50:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-04-05 23:50:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 552. [2022-04-05 23:50:47,457 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) [2022-04-05 23:50:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 553 transitions. [2022-04-05 23:50:47,458 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 553 transitions. Word has length 542 [2022-04-05 23:50:47,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:50:47,458 INFO L478 AbstractCegarLoop]: Abstraction has 552 states and 553 transitions. [2022-04-05 23:50:47,458 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.8421052631578947) internal successors, (216), 73 states have internal predecessors, (216), 68 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-04-05 23:50:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 553 transitions. [2022-04-05 23:50:47,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2022-04-05 23:50:47,461 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:50:47,461 INFO L499 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:50:47,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-04-05 23:50:47,684 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-04-05 23:50:47,684 INFO L403 AbstractCegarLoop]: === Iteration 135 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:50:47,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:50:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1692608666, now seen corresponding path program 133 times [2022-04-05 23:50:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:50:47,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440306971] [2022-04-05 23:50:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:50:47,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:50:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:50:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-04-05 23:50:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:50:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:50:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:50:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:50:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:50:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:50:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:50:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:50:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:50:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:50:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:50:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:50:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:50:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:50:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:50:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:50:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:50:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:50:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:50:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:50:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:50:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:50:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:50:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:50:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:50:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 23:50:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 23:50:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 23:50:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 23:50:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 23:50:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 23:50:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 23:50:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 23:50:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 23:50:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 23:50:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 23:50:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 23:50:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 23:50:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 23:50:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 23:50:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 23:50:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 23:50:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-04-05 23:50:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 23:50:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-04-05 23:50:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 23:50:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-04-05 23:50:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 23:50:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-04-05 23:50:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 23:50:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-04-05 23:50:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 23:50:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-04-05 23:50:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 23:50:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-04-05 23:50:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 23:50:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-04-05 23:50:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 23:50:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-04-05 23:50:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-05 23:50:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-04-05 23:50:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-05 23:50:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-04-05 23:50:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-05 23:50:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-04-05 23:50:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-05 23:50:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 18023 backedges. 6901 proven. 2278 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-05 23:50:52,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:50:52,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440306971] [2022-04-05 23:50:52,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440306971] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:50:52,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699698451] [2022-04-05 23:50:52,222 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:50:52,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:50:52,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:50:52,223 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) [2022-04-05 23:50:52,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-04-05 23:50:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:50:52,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 138 conjunts are in the unsatisfiable core [2022-04-05 23:50:52,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:50:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18023 backedges. 6901 proven. 2278 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-05 23:50:53,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:50:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18023 backedges. 6901 proven. 2278 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-05 23:50:53,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699698451] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:50:53,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:50:53,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 139, 139] total 141 [2022-04-05 23:50:53,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862669945] [2022-04-05 23:50:53,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:50:53,943 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-04-05 23:50:53,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:50:53,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-04-05 23:50:53,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4903, Invalid=14837, Unknown=0, NotChecked=0, Total=19740 [2022-04-05 23:50:53,945 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) [2022-04-05 23:50:59,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:50:59,987 INFO L93 Difference]: Finished difference Result 765 states and 834 transitions. [2022-04-05 23:50:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-04-05 23:50:59,987 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 [2022-04-05 23:50:59,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:50:59,988 INFO L225 Difference]: With dead ends: 765 [2022-04-05 23:50:59,988 INFO L226 Difference]: Without dead ends: 553 [2022-04-05 23:50:59,992 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1509 GetRequests, 1232 SyntacticMatches, 1 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18895 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=14838, Invalid=62168, Unknown=0, NotChecked=0, Total=77006 [2022-04-05 23:50:59,992 INFO L913 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 [2022-04-05 23:50:59,992 INFO L914 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] [2022-04-05 23:50:59,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-04-05 23:51:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-04-05 23:51:00,063 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) [2022-04-05 23:51:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 554 transitions. [2022-04-05 23:51:00,064 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 554 transitions. Word has length 549 [2022-04-05 23:51:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:51:00,064 INFO L478 AbstractCegarLoop]: Abstraction has 553 states and 554 transitions. [2022-04-05 23:51:00,064 INFO L479 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) [2022-04-05 23:51:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 554 transitions. [2022-04-05 23:51:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2022-04-05 23:51:00,066 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:51:00,066 INFO L499 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:51:00,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2022-04-05 23:51:00,267 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-04-05 23:51:00,267 INFO L403 AbstractCegarLoop]: === Iteration 136 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:51:00,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:51:00,267 INFO L85 PathProgramCache]: Analyzing trace with hash -41067316, now seen corresponding path program 134 times [2022-04-05 23:51:00,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:51:00,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985582464] [2022-04-05 23:51:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:51:00,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:51:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:51:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:51:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:51:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:51:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:51:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:51:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:51:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:51:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:51:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:51:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:51:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:51:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:51:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:51:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:51:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:51:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:51:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:51:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:51:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:51:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:51:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 23:51:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 23:51:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 23:51:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 23:51:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 23:51:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 23:51:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 23:51:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 23:51:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 23:51:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 23:51:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 23:51:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 23:51:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 23:51:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 23:51:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 23:51:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 23:51:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 23:51:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 23:51:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 23:51:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 23:51:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 23:51:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 23:51:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 23:51:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 23:51:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-04-05 23:51:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 23:51:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-04-05 23:51:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 23:51:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-04-05 23:51:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 23:51:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-04-05 23:51:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 23:51:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-04-05 23:51:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 23:51:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-04-05 23:51:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 23:51:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-04-05 23:51:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 23:51:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-04-05 23:51:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-05 23:51:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-04-05 23:51:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-05 23:51:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-04-05 23:51:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-05 23:51:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-04-05 23:51:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-04-05 23:51:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-04-05 23:51:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 18091 backedges. 2412 proven. 6835 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-05 23:51:02,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:51:02,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985582464] [2022-04-05 23:51:02,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985582464] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:51:02,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747685209] [2022-04-05 23:51:02,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:51:02,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:51:02,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:51:02,128 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) [2022-04-05 23:51:02,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-04-05 23:51:02,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:51:02,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:51:02,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 139 conjunts are in the unsatisfiable core [2022-04-05 23:51:02,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:51:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 18091 backedges. 2480 proven. 6767 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-05 23:51:03,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:51:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18091 backedges. 2480 proven. 6767 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-04-05 23:51:03,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747685209] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:51:03,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:51:03,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73, 73] total 77 [2022-04-05 23:51:03,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99620707] [2022-04-05 23:51:03,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:51:03,875 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-04-05 23:51:03,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:51:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-04-05 23:51:03,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2500, Invalid=3352, Unknown=0, NotChecked=0, Total=5852 [2022-04-05 23:51:03,876 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) [2022-04-05 23:51:05,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:51:05,766 INFO L93 Difference]: Finished difference Result 566 states and 568 transitions. [2022-04-05 23:51:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-04-05 23:51:05,766 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 [2022-04-05 23:51:05,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:51:05,767 INFO L225 Difference]: With dead ends: 566 [2022-04-05 23:51:05,767 INFO L226 Difference]: Without dead ends: 564 [2022-04-05 23:51:05,768 INFO L912 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 [2022-04-05 23:51:05,769 INFO L913 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 [2022-04-05 23:51:05,769 INFO L914 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] [2022-04-05 23:51:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-04-05 23:51:05,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2022-04-05 23:51:05,878 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) [2022-04-05 23:51:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 561 transitions. [2022-04-05 23:51:05,878 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 561 transitions. Word has length 550 [2022-04-05 23:51:05,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:51:05,879 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 561 transitions. [2022-04-05 23:51:05,879 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.844155844155844) internal successors, (219), 74 states have internal predecessors, (219), 69 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-04-05 23:51:05,879 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 561 transitions. [2022-04-05 23:51:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-04-05 23:51:05,882 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:51:05,882 INFO L499 BasicCegarLoop]: trace histogram [69, 69, 69, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:51:05,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-04-05 23:51:06,095 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-04-05 23:51:06,095 INFO L403 AbstractCegarLoop]: === Iteration 137 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:51:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:51:06,096 INFO L85 PathProgramCache]: Analyzing trace with hash -829149785, now seen corresponding path program 135 times [2022-04-05 23:51:06,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:51:06,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118378966] [2022-04-05 23:51:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:51:06,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:51:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:51:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-04-05 23:51:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-04-05 23:51:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-04-05 23:51:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-04-05 23:51:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-04-05 23:51:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-04-05 23:51:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-04-05 23:51:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-04-05 23:51:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-04-05 23:51:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-04-05 23:51:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-04-05 23:51:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-04-05 23:51:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-04-05 23:51:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-04-05 23:51:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-04-05 23:51:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-04-05 23:51:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-04-05 23:51:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-04-05 23:51:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-04-05 23:51:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-04-05 23:51:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-04-05 23:51:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-04-05 23:51:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-04-05 23:51:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-04-05 23:51:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-04-05 23:51:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-04-05 23:51:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-04-05 23:51:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-04-05 23:51:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-04-05 23:51:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-04-05 23:51:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-04-05 23:51:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-04-05 23:51:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-04-05 23:51:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-04-05 23:51:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-04-05 23:51:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-04-05 23:51:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-04-05 23:51:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-04-05 23:51:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-04-05 23:51:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-04-05 23:51:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-04-05 23:51:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-04-05 23:51:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-04-05 23:51:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-04-05 23:51:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2022-04-05 23:51:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-04-05 23:51:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2022-04-05 23:51:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-04-05 23:51:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-04-05 23:51:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-04-05 23:51:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2022-04-05 23:51:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-04-05 23:51:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2022-04-05 23:51:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-04-05 23:51:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2022-04-05 23:51:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-04-05 23:51:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2022-04-05 23:51:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-04-05 23:51:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2022-04-05 23:51:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-04-05 23:51:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2022-04-05 23:51:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-04-05 23:51:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2022-04-05 23:51:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-04-05 23:51:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2022-04-05 23:51:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-04-05 23:51:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2022-04-05 23:51:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-04-05 23:51:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 7106 proven. 2346 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-04-05 23:51:10,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:51:10,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118378966] [2022-04-05 23:51:10,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118378966] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:51:10,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740727731] [2022-04-05 23:51:10,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:51:10,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:51:10,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:51:10,774 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) [2022-04-05 23:51:10,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-04-05 23:51:11,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2022-04-05 23:51:11,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:51:11,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 140 conjunts are in the unsatisfiable core [2022-04-05 23:51:11,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:51:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 7106 proven. 2346 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-04-05 23:51:11,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:51:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 7106 proven. 2346 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-04-05 23:51:12,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740727731] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:51:12,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:51:12,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 141, 141] total 143 [2022-04-05 23:51:12,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753371907] [2022-04-05 23:51:12,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:51:12,673 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2022-04-05 23:51:12,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:51:12,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2022-04-05 23:51:12,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5044, Invalid=15262, Unknown=0, NotChecked=0, Total=20306 [2022-04-05 23:51:12,675 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) [2022-04-05 23:51:19,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:51:19,026 INFO L93 Difference]: Finished difference Result 776 states and 846 transitions. [2022-04-05 23:51:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-04-05 23:51:19,026 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 [2022-04-05 23:51:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:51:19,028 INFO L225 Difference]: With dead ends: 776 [2022-04-05 23:51:19,028 INFO L226 Difference]: Without dead ends: 561 [2022-04-05 23:51:19,031 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1531 GetRequests, 1250 SyntacticMatches, 1 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19449 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=15263, Invalid=63979, Unknown=0, NotChecked=0, Total=79242 [2022-04-05 23:51:19,031 INFO L913 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 [2022-04-05 23:51:19,031 INFO L914 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] [2022-04-05 23:51:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-04-05 23:51:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-04-05 23:51:19,120 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) [2022-04-05 23:51:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 562 transitions. [2022-04-05 23:51:19,121 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 562 transitions. Word has length 557 [2022-04-05 23:51:19,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:51:19,121 INFO L478 AbstractCegarLoop]: Abstraction has 561 states and 562 transitions. [2022-04-05 23:51:19,121 INFO L479 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) [2022-04-05 23:51:19,121 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 562 transitions. [2022-04-05 23:51:19,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2022-04-05 23:51:19,123 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:51:19,123 INFO L499 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:51:19,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-04-05 23:51:19,324 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-04-05 23:51:19,324 INFO L403 AbstractCegarLoop]: === Iteration 138 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:51:19,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:51:19,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1643375885, now seen corresponding path program 136 times [2022-04-05 23:51:19,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:51:19,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343562224] [2022-04-05 23:51:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:51:19,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:51:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:51:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:51:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:51:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:51:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:51:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:51:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:51:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:51:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:51:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:51:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:51:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:51:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:51:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:51:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:51:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:51:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:51:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:51:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:51:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:51:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:51:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:51:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 23:51:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 23:51:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 23:51:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 23:51:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 23:51:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 23:51:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 23:51:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 23:51:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 23:51:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 23:51:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 23:51:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 23:51:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 23:51:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 23:51:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 23:51:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 23:51:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 23:51:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 23:51:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 23:51:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 23:51:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 23:51:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 23:51:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 23:51:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 23:51:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-04-05 23:51:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 23:51:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-04-05 23:51:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 23:51:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-04-05 23:51:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 23:51:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-04-05 23:51:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 23:51:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-04-05 23:51:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 23:51:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-04-05 23:51:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 23:51:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-04-05 23:51:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 23:51:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-04-05 23:51:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-05 23:51:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2022-04-05 23:51:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-05 23:51:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-04-05 23:51:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-05 23:51:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-04-05 23:51:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-04-05 23:51:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-04-05 23:51:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18633 backedges. 2482 proven. 7039 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-04-05 23:51:21,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:51:21,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343562224] [2022-04-05 23:51:21,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343562224] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:51:21,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345161790] [2022-04-05 23:51:21,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:51:21,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:51:21,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:51:21,248 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) [2022-04-05 23:51:21,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-04-05 23:51:21,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:51:21,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:51:21,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 141 conjunts are in the unsatisfiable core [2022-04-05 23:51:21,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:51:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 18633 backedges. 2551 proven. 6970 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-04-05 23:51:22,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:51:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18633 backedges. 2551 proven. 6970 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-04-05 23:51:23,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345161790] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:51:23,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:51:23,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74, 74] total 78 [2022-04-05 23:51:23,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282082845] [2022-04-05 23:51:23,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:51:23,031 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-04-05 23:51:23,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:51:23,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-04-05 23:51:23,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2571, Invalid=3435, Unknown=0, NotChecked=0, Total=6006 [2022-04-05 23:51:23,032 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) [2022-04-05 23:51:25,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:51:25,060 INFO L93 Difference]: Finished difference Result 574 states and 576 transitions. [2022-04-05 23:51:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-04-05 23:51:25,060 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 [2022-04-05 23:51:25,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:51:25,062 INFO L225 Difference]: With dead ends: 574 [2022-04-05 23:51:25,062 INFO L226 Difference]: Without dead ends: 572 [2022-04-05 23:51:25,063 INFO L912 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 [2022-04-05 23:51:25,063 INFO L913 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 [2022-04-05 23:51:25,064 INFO L914 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] [2022-04-05 23:51:25,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-04-05 23:51:25,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 568. [2022-04-05 23:51:25,154 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) [2022-04-05 23:51:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 569 transitions. [2022-04-05 23:51:25,155 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 569 transitions. Word has length 558 [2022-04-05 23:51:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:51:25,155 INFO L478 AbstractCegarLoop]: Abstraction has 568 states and 569 transitions. [2022-04-05 23:51:25,155 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.8461538461538463) internal successors, (222), 75 states have internal predecessors, (222), 70 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-04-05 23:51:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 569 transitions. [2022-04-05 23:51:25,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-04-05 23:51:25,157 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:51:25,157 INFO L499 BasicCegarLoop]: trace histogram [70, 70, 70, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:51:25,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-04-05 23:51:25,357 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-04-05 23:51:25,358 INFO L403 AbstractCegarLoop]: === Iteration 139 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:51:25,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:51:25,358 INFO L85 PathProgramCache]: Analyzing trace with hash -724041146, now seen corresponding path program 137 times [2022-04-05 23:51:25,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:51:25,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713234881] [2022-04-05 23:51:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:51:25,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:51:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:51:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-04-05 23:51:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-04-05 23:51:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-04-05 23:51:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-04-05 23:51:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-04-05 23:51:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-04-05 23:51:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-04-05 23:51:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-04-05 23:51:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-04-05 23:51:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-04-05 23:51:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-04-05 23:51:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-04-05 23:51:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-04-05 23:51:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-04-05 23:51:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-04-05 23:51:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-04-05 23:51:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-04-05 23:51:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-04-05 23:51:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-04-05 23:51:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-04-05 23:51:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-04-05 23:51:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-04-05 23:51:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-04-05 23:51:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-04-05 23:51:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-04-05 23:51:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-04-05 23:51:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-04-05 23:51:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-04-05 23:51:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-04-05 23:51:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-04-05 23:51:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-04-05 23:51:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-04-05 23:51:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-04-05 23:51:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-04-05 23:51:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-04-05 23:51:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-04-05 23:51:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-04-05 23:51:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-04-05 23:51:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-04-05 23:51:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-04-05 23:51:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-04-05 23:51:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-04-05 23:51:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-04-05 23:51:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-04-05 23:51:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-04-05 23:51:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2022-04-05 23:51:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-04-05 23:51:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2022-04-05 23:51:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-04-05 23:51:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-04-05 23:51:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-04-05 23:51:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2022-04-05 23:51:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-04-05 23:51:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2022-04-05 23:51:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-04-05 23:51:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-04-05 23:51:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-04-05 23:51:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2022-04-05 23:51:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-04-05 23:51:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2022-04-05 23:51:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-04-05 23:51:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2022-04-05 23:51:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-04-05 23:51:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2022-04-05 23:51:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-04-05 23:51:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2022-04-05 23:51:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-04-05 23:51:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2022-04-05 23:51:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-04-05 23:51:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 19113 backedges. 7314 proven. 2415 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-04-05 23:51:30,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:51:30,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713234881] [2022-04-05 23:51:30,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713234881] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:51:30,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878787031] [2022-04-05 23:51:30,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:51:30,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:51:30,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:51:30,203 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) [2022-04-05 23:51:30,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-04-05 23:51:30,510 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2022-04-05 23:51:30,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:51:30,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 142 conjunts are in the unsatisfiable core [2022-04-05 23:51:30,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:51:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 19113 backedges. 7314 proven. 2415 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-04-05 23:51:31,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:51:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 19113 backedges. 7314 proven. 2415 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-04-05 23:51:32,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878787031] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:51:32,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:51:32,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 143, 143] total 145 [2022-04-05 23:51:32,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042200210] [2022-04-05 23:51:32,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:51:32,128 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2022-04-05 23:51:32,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:51:32,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2022-04-05 23:51:32,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5187, Invalid=15693, Unknown=0, NotChecked=0, Total=20880 [2022-04-05 23:51:32,130 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) [2022-04-05 23:51:38,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:51:38,234 INFO L93 Difference]: Finished difference Result 787 states and 858 transitions. [2022-04-05 23:51:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-04-05 23:51:38,234 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 [2022-04-05 23:51:38,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:51:38,236 INFO L225 Difference]: With dead ends: 787 [2022-04-05 23:51:38,236 INFO L226 Difference]: Without dead ends: 569 [2022-04-05 23:51:38,239 INFO L912 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 [2022-04-05 23:51:38,239 INFO L913 BasicCegarLoop]: 80 mSDtfsCounter, 19 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-04-05 23:51:38,239 INFO L914 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] [2022-04-05 23:51:38,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-04-05 23:51:38,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2022-04-05 23:51:38,331 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) [2022-04-05 23:51:38,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 570 transitions. [2022-04-05 23:51:38,331 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 570 transitions. Word has length 565 [2022-04-05 23:51:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:51:38,331 INFO L478 AbstractCegarLoop]: Abstraction has 569 states and 570 transitions. [2022-04-05 23:51:38,332 INFO L479 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) [2022-04-05 23:51:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 570 transitions. [2022-04-05 23:51:38,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2022-04-05 23:51:38,334 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:51:38,334 INFO L499 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:51:38,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-04-05 23:51:38,534 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-04-05 23:51:38,535 INFO L403 AbstractCegarLoop]: === Iteration 140 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:51:38,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:51:38,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1152582740, now seen corresponding path program 138 times [2022-04-05 23:51:38,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:51:38,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87610618] [2022-04-05 23:51:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:51:38,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:51:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:51:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:51:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:51:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:51:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:51:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:51:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:51:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:51:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:51:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:51:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:51:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:51:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:51:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:51:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:51:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:51:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:51:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:51:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:51:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:51:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:51:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:51:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:51:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 23:51:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 23:51:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 23:51:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 23:51:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 23:51:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 23:51:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 23:51:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 23:51:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 23:51:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 23:51:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 23:51:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 23:51:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 23:51:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 23:51:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 23:51:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 23:51:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 23:51:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 23:51:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 23:51:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 23:51:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 23:51:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 23:51:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 23:51:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 23:51:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-04-05 23:51:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 23:51:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-04-05 23:51:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 23:51:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-04-05 23:51:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 23:51:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-04-05 23:51:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 23:51:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-04-05 23:51:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 23:51:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-04-05 23:51:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 23:51:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-04-05 23:51:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 23:51:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-04-05 23:51:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-05 23:51:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2022-04-05 23:51:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-05 23:51:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-04-05 23:51:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-04-05 23:51:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-04-05 23:51:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-04-05 23:51:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2022-04-05 23:51:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 19183 backedges. 2553 proven. 7246 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-04-05 23:51:40,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:51:40,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87610618] [2022-04-05 23:51:40,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87610618] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:51:40,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459130484] [2022-04-05 23:51:40,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:51:40,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:51:40,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:51:40,491 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) [2022-04-05 23:51:40,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-04-05 23:51:40,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2022-04-05 23:51:40,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:51:40,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 143 conjunts are in the unsatisfiable core [2022-04-05 23:51:40,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:51:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 19183 backedges. 2623 proven. 7176 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-04-05 23:51:41,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:51:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 19183 backedges. 2623 proven. 7176 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-04-05 23:51:42,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459130484] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:51:42,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:51:42,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 75] total 79 [2022-04-05 23:51:42,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507455536] [2022-04-05 23:51:42,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:51:42,405 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-04-05 23:51:42,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:51:42,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-04-05 23:51:42,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2643, Invalid=3519, Unknown=0, NotChecked=0, Total=6162 [2022-04-05 23:51:42,405 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) [2022-04-05 23:51:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:51:44,573 INFO L93 Difference]: Finished difference Result 582 states and 584 transitions. [2022-04-05 23:51:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-04-05 23:51:44,574 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 [2022-04-05 23:51:44,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:51:44,575 INFO L225 Difference]: With dead ends: 582 [2022-04-05 23:51:44,575 INFO L226 Difference]: Without dead ends: 580 [2022-04-05 23:51:44,576 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1491 GetRequests, 1337 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3893 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=7921, Invalid=15641, Unknown=0, NotChecked=0, Total=23562 [2022-04-05 23:51:44,577 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 165 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-04-05 23:51:44,577 INFO L914 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] [2022-04-05 23:51:44,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2022-04-05 23:51:44,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 576. [2022-04-05 23:51:44,670 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) [2022-04-05 23:51:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 577 transitions. [2022-04-05 23:51:44,671 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 577 transitions. Word has length 566 [2022-04-05 23:51:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:51:44,671 INFO L478 AbstractCegarLoop]: Abstraction has 576 states and 577 transitions. [2022-04-05 23:51:44,671 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.848101265822785) internal successors, (225), 76 states have internal predecessors, (225), 71 states have call successors, (74), 4 states have call predecessors, (74), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-04-05 23:51:44,671 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 577 transitions. [2022-04-05 23:51:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2022-04-05 23:51:44,673 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:51:44,673 INFO L499 BasicCegarLoop]: trace histogram [71, 71, 71, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:51:44,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2022-04-05 23:51:44,874 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-04-05 23:51:44,874 INFO L403 AbstractCegarLoop]: === Iteration 141 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:51:44,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:51:44,874 INFO L85 PathProgramCache]: Analyzing trace with hash -894561593, now seen corresponding path program 139 times [2022-04-05 23:51:44,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:51:44,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821414749] [2022-04-05 23:51:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:51:44,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:51:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:51:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-04-05 23:51:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-04-05 23:51:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-04-05 23:51:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-04-05 23:51:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-04-05 23:51:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-04-05 23:51:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-04-05 23:51:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-04-05 23:51:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-04-05 23:51:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-04-05 23:51:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-04-05 23:51:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-04-05 23:51:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-04-05 23:51:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-04-05 23:51:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-04-05 23:51:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-04-05 23:51:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-04-05 23:51:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-04-05 23:51:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-04-05 23:51:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-04-05 23:51:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-04-05 23:51:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-04-05 23:51:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-04-05 23:51:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-04-05 23:51:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-04-05 23:51:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-04-05 23:51:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-04-05 23:51:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-04-05 23:51:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-04-05 23:51:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-04-05 23:51:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-04-05 23:51:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-04-05 23:51:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-04-05 23:51:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-04-05 23:51:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-04-05 23:51:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-04-05 23:51:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-04-05 23:51:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-04-05 23:51:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-04-05 23:51:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-04-05 23:51:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-04-05 23:51:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-04-05 23:51:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-04-05 23:51:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-04-05 23:51:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-04-05 23:51:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-04-05 23:51:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2022-04-05 23:51:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-04-05 23:51:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2022-04-05 23:51:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-04-05 23:51:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-04-05 23:51:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-04-05 23:51:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2022-04-05 23:51:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-04-05 23:51:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2022-04-05 23:51:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-04-05 23:51:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-04-05 23:51:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-04-05 23:51:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2022-04-05 23:51:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-04-05 23:51:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2022-04-05 23:51:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-04-05 23:51:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2022-04-05 23:51:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-04-05 23:51:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2022-04-05 23:51:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-04-05 23:51:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2022-04-05 23:51:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-04-05 23:51:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2022-04-05 23:51:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-04-05 23:51:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 19670 backedges. 7525 proven. 2485 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-04-05 23:51:49,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:51:49,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821414749] [2022-04-05 23:51:49,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821414749] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:51:49,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748967122] [2022-04-05 23:51:49,799 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:51:49,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:51:49,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:51:49,800 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) [2022-04-05 23:51:49,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-04-05 23:51:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:51:49,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 144 conjunts are in the unsatisfiable core [2022-04-05 23:51:49,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:51:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 19670 backedges. 7525 proven. 2485 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-04-05 23:51:50,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:51:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 19670 backedges. 7525 proven. 2485 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-04-05 23:51:51,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748967122] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:51:51,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:51:51,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 145, 145] total 147 [2022-04-05 23:51:51,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760478283] [2022-04-05 23:51:51,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:51:51,585 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-04-05 23:51:51,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:51:51,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-04-05 23:51:51,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5332, Invalid=16130, Unknown=0, NotChecked=0, Total=21462 [2022-04-05 23:51:51,586 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) [2022-04-05 23:51:57,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:51:57,944 INFO L93 Difference]: Finished difference Result 798 states and 870 transitions. [2022-04-05 23:51:57,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-04-05 23:51:57,945 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 [2022-04-05 23:51:57,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:51:57,946 INFO L225 Difference]: With dead ends: 798 [2022-04-05 23:51:57,946 INFO L226 Difference]: Without dead ends: 577 [2022-04-05 23:51:57,951 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1286 SyntacticMatches, 1 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20581 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=16131, Invalid=67679, Unknown=0, NotChecked=0, Total=83810 [2022-04-05 23:51:57,951 INFO L913 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 [2022-04-05 23:51:57,951 INFO L914 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] [2022-04-05 23:51:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-04-05 23:51:58,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-04-05 23:51:58,069 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) [2022-04-05 23:51:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 578 transitions. [2022-04-05 23:51:58,070 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 578 transitions. Word has length 573 [2022-04-05 23:51:58,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:51:58,071 INFO L478 AbstractCegarLoop]: Abstraction has 577 states and 578 transitions. [2022-04-05 23:51:58,071 INFO L479 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) [2022-04-05 23:51:58,071 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 578 transitions. [2022-04-05 23:51:58,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2022-04-05 23:51:58,074 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:51:58,074 INFO L499 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:51:58,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-04-05 23:51:58,286 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:51:58,287 INFO L403 AbstractCegarLoop]: === Iteration 142 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:51:58,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:51:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1604434387, now seen corresponding path program 140 times [2022-04-05 23:51:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:51:58,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912038756] [2022-04-05 23:51:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:51:58,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:51:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:52:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:52:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:52:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:52:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:52:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:52:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:52:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:52:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:52:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:52:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:52:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:52:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:52:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:52:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:52:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:52:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:52:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:52:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:52:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:52:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:52:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:52:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:52:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:52:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 23:52:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 23:52:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 23:52:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 23:52:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 23:52:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 23:52:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 23:52:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 23:52:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 23:52:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 23:52:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 23:52:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 23:52:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 23:52:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 23:52:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 23:52:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 23:52:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 23:52:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 23:52:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 23:52:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 23:52:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 23:52:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 23:52:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 23:52:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 23:52:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-04-05 23:52:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 23:52:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-04-05 23:52:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 23:52:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-04-05 23:52:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 23:52:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-04-05 23:52:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 23:52:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-04-05 23:52:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 23:52:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-04-05 23:52:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 23:52:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-04-05 23:52:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 23:52:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-04-05 23:52:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-05 23:52:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2022-04-05 23:52:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-05 23:52:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-04-05 23:52:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-04-05 23:52:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-04-05 23:52:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-04-05 23:52:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2022-04-05 23:52:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 19741 backedges. 2625 proven. 7456 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-04-05 23:52:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:52:00,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912038756] [2022-04-05 23:52:00,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912038756] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:52:00,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119542135] [2022-04-05 23:52:00,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:52:00,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:52:00,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:52:00,361 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) [2022-04-05 23:52:00,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-04-05 23:52:00,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:52:00,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:52:00,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 145 conjunts are in the unsatisfiable core [2022-04-05 23:52:00,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:52:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 19741 backedges. 2696 proven. 7385 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-04-05 23:52:01,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:52:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 19741 backedges. 2696 proven. 7385 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-04-05 23:52:02,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119542135] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:52:02,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:52:02,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 80 [2022-04-05 23:52:02,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121285478] [2022-04-05 23:52:02,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:52:02,205 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-04-05 23:52:02,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:52:02,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-04-05 23:52:02,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2716, Invalid=3604, Unknown=0, NotChecked=0, Total=6320 [2022-04-05 23:52:02,206 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) [2022-04-05 23:52:04,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:52:04,317 INFO L93 Difference]: Finished difference Result 590 states and 592 transitions. [2022-04-05 23:52:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-04-05 23:52:04,317 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 [2022-04-05 23:52:04,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:52:04,318 INFO L225 Difference]: With dead ends: 590 [2022-04-05 23:52:04,318 INFO L226 Difference]: Without dead ends: 588 [2022-04-05 23:52:04,320 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1512 GetRequests, 1356 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3984 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=8140, Invalid=16040, Unknown=0, NotChecked=0, Total=24180 [2022-04-05 23:52:04,320 INFO L913 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 [2022-04-05 23:52:04,320 INFO L914 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] [2022-04-05 23:52:04,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-04-05 23:52:04,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 584. [2022-04-05 23:52:04,403 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) [2022-04-05 23:52:04,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 585 transitions. [2022-04-05 23:52:04,404 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 585 transitions. Word has length 574 [2022-04-05 23:52:04,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:52:04,404 INFO L478 AbstractCegarLoop]: Abstraction has 584 states and 585 transitions. [2022-04-05 23:52:04,404 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.85) internal successors, (228), 77 states have internal predecessors, (228), 72 states have call successors, (75), 4 states have call predecessors, (75), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-04-05 23:52:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 585 transitions. [2022-04-05 23:52:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-04-05 23:52:04,406 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:52:04,406 INFO L499 BasicCegarLoop]: trace histogram [72, 72, 72, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:52:04,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2022-04-05 23:52:04,607 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:52:04,607 INFO L403 AbstractCegarLoop]: === Iteration 143 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:52:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:52:04,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1343412954, now seen corresponding path program 141 times [2022-04-05 23:52:04,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:52:04,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631698806] [2022-04-05 23:52:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:52:04,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:52:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:52:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-04-05 23:52:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-04-05 23:52:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-04-05 23:52:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-04-05 23:52:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-04-05 23:52:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-04-05 23:52:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-04-05 23:52:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-04-05 23:52:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-04-05 23:52:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-04-05 23:52:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-04-05 23:52:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-04-05 23:52:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-04-05 23:52:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-04-05 23:52:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-04-05 23:52:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-04-05 23:52:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-04-05 23:52:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-04-05 23:52:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-04-05 23:52:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-04-05 23:52:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-04-05 23:52:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-04-05 23:52:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-04-05 23:52:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-04-05 23:52:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-04-05 23:52:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-04-05 23:52:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-04-05 23:52:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-04-05 23:52:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-04-05 23:52:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-04-05 23:52:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-04-05 23:52:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-04-05 23:52:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-04-05 23:52:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-04-05 23:52:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-04-05 23:52:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-04-05 23:52:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-04-05 23:52:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-04-05 23:52:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-04-05 23:52:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-04-05 23:52:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-04-05 23:52:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-04-05 23:52:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-04-05 23:52:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-04-05 23:52:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-04-05 23:52:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-04-05 23:52:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-04-05 23:52:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-04-05 23:52:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-04-05 23:52:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2022-04-05 23:52:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-04-05 23:52:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2022-04-05 23:52:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-04-05 23:52:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2022-04-05 23:52:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-04-05 23:52:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2022-04-05 23:52:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-04-05 23:52:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2022-04-05 23:52:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-04-05 23:52:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2022-04-05 23:52:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-04-05 23:52:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2022-04-05 23:52:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-04-05 23:52:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2022-04-05 23:52:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-04-05 23:52:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2022-04-05 23:52:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-04-05 23:52:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2022-04-05 23:52:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-04-05 23:52:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2022-04-05 23:52:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-04-05 23:52:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 20235 backedges. 7739 proven. 2556 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-04-05 23:52:09,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:52:09,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631698806] [2022-04-05 23:52:09,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631698806] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:52:09,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974935544] [2022-04-05 23:52:09,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 23:52:09,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:52:09,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:52:09,683 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) [2022-04-05 23:52:09,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-04-05 23:52:10,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2022-04-05 23:52:10,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:52:10,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 146 conjunts are in the unsatisfiable core [2022-04-05 23:52:10,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:52:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 20235 backedges. 7739 proven. 2556 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-04-05 23:52:10,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:52:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 20235 backedges. 7739 proven. 2556 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-04-05 23:52:11,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974935544] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:52:11,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:52:11,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 147, 147] total 149 [2022-04-05 23:52:11,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445829512] [2022-04-05 23:52:11,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:52:11,656 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-04-05 23:52:11,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:52:11,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-04-05 23:52:11,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5479, Invalid=16573, Unknown=0, NotChecked=0, Total=22052 [2022-04-05 23:52:11,657 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) [2022-04-05 23:52:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:52:18,161 INFO L93 Difference]: Finished difference Result 809 states and 882 transitions. [2022-04-05 23:52:18,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-04-05 23:52:18,161 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 [2022-04-05 23:52:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:52:18,163 INFO L225 Difference]: With dead ends: 809 [2022-04-05 23:52:18,163 INFO L226 Difference]: Without dead ends: 585 [2022-04-05 23:52:18,166 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1597 GetRequests, 1304 SyntacticMatches, 1 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21159 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=16574, Invalid=69568, Unknown=0, NotChecked=0, Total=86142 [2022-04-05 23:52:18,167 INFO L913 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 [2022-04-05 23:52:18,167 INFO L914 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] [2022-04-05 23:52:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-04-05 23:52:18,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-04-05 23:52:18,248 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) [2022-04-05 23:52:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 586 transitions. [2022-04-05 23:52:18,249 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 586 transitions. Word has length 581 [2022-04-05 23:52:18,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:52:18,249 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 586 transitions. [2022-04-05 23:52:18,249 INFO L479 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) [2022-04-05 23:52:18,249 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 586 transitions. [2022-04-05 23:52:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2022-04-05 23:52:18,251 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:52:18,251 INFO L499 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:52:18,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-04-05 23:52:18,452 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:52:18,452 INFO L403 AbstractCegarLoop]: === Iteration 144 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:52:18,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:52:18,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1963027828, now seen corresponding path program 142 times [2022-04-05 23:52:18,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:52:18,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122577180] [2022-04-05 23:52:18,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:52:18,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:52:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:52:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:52:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:52:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:52:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:52:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:52:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:52:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:52:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:52:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:52:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:52:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:52:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:52:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:52:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:52:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:52:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:52:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:52:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:52:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:52:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:52:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:52:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:52:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:52:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:52:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 23:52:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 23:52:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 23:52:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 23:52:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 23:52:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 23:52:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 23:52:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 23:52:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 23:52:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 23:52:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 23:52:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 23:52:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 23:52:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 23:52:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 23:52:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 23:52:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 23:52:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 23:52:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 23:52:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 23:52:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 23:52:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 23:52:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 23:52:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 23:52:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-04-05 23:52:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 23:52:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-04-05 23:52:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 23:52:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-04-05 23:52:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 23:52:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-04-05 23:52:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 23:52:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-04-05 23:52:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 23:52:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-04-05 23:52:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-05 23:52:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-04-05 23:52:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 23:52:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-04-05 23:52:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-05 23:52:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2022-04-05 23:52:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-05 23:52:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-04-05 23:52:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-04-05 23:52:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-04-05 23:52:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-04-05 23:52:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2022-04-05 23:52:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 20307 backedges. 2698 proven. 7669 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-04-05 23:52:20,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:52:20,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122577180] [2022-04-05 23:52:20,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122577180] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:52:20,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250563141] [2022-04-05 23:52:20,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 23:52:20,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:52:20,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:52:20,529 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) [2022-04-05 23:52:20,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-04-05 23:52:20,714 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 23:52:20,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:52:20,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 147 conjunts are in the unsatisfiable core [2022-04-05 23:52:20,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:52:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 20307 backedges. 2770 proven. 7597 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-04-05 23:52:21,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:52:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 20307 backedges. 2770 proven. 7597 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2022-04-05 23:52:22,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250563141] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:52:22,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:52:22,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 81 [2022-04-05 23:52:22,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883739666] [2022-04-05 23:52:22,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:52:22,380 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-04-05 23:52:22,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:52:22,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-04-05 23:52:22,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2790, Invalid=3690, Unknown=0, NotChecked=0, Total=6480 [2022-04-05 23:52:22,381 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) [2022-04-05 23:52:24,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:52:24,621 INFO L93 Difference]: Finished difference Result 598 states and 600 transitions. [2022-04-05 23:52:24,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-04-05 23:52:24,621 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 [2022-04-05 23:52:24,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:52:24,622 INFO L225 Difference]: With dead ends: 598 [2022-04-05 23:52:24,622 INFO L226 Difference]: Without dead ends: 596 [2022-04-05 23:52:24,624 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1533 GetRequests, 1375 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4076 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=8362, Invalid=16444, Unknown=0, NotChecked=0, Total=24806 [2022-04-05 23:52:24,624 INFO L913 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 [2022-04-05 23:52:24,624 INFO L914 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] [2022-04-05 23:52:24,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-04-05 23:52:24,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 592. [2022-04-05 23:52:24,712 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) [2022-04-05 23:52:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 593 transitions. [2022-04-05 23:52:24,713 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 593 transitions. Word has length 582 [2022-04-05 23:52:24,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:52:24,713 INFO L478 AbstractCegarLoop]: Abstraction has 592 states and 593 transitions. [2022-04-05 23:52:24,713 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.8518518518518516) internal successors, (231), 78 states have internal predecessors, (231), 73 states have call successors, (76), 4 states have call predecessors, (76), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-04-05 23:52:24,713 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 593 transitions. [2022-04-05 23:52:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2022-04-05 23:52:24,715 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:52:24,716 INFO L499 BasicCegarLoop]: trace histogram [73, 73, 73, 72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:52:24,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-04-05 23:52:24,916 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:52:24,916 INFO L403 AbstractCegarLoop]: === Iteration 145 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:52:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:52:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash -147914777, now seen corresponding path program 143 times [2022-04-05 23:52:24,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:52:24,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25017721] [2022-04-05 23:52:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:52:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:52:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:52:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-04-05 23:52:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-04-05 23:52:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-04-05 23:52:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-04-05 23:52:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-04-05 23:52:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-04-05 23:52:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-04-05 23:52:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-04-05 23:52:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-04-05 23:52:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-04-05 23:52:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-04-05 23:52:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-04-05 23:52:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-04-05 23:52:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-04-05 23:52:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-04-05 23:52:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-04-05 23:52:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-04-05 23:52:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-04-05 23:52:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-04-05 23:52:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-04-05 23:52:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-04-05 23:52:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-04-05 23:52:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-04-05 23:52:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-04-05 23:52:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-04-05 23:52:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-04-05 23:52:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-04-05 23:52:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-04-05 23:52:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-04-05 23:52:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-04-05 23:52:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-04-05 23:52:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-04-05 23:52:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-04-05 23:52:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-04-05 23:52:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-04-05 23:52:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-04-05 23:52:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-04-05 23:52:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-04-05 23:52:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-04-05 23:52:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-04-05 23:52:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-04-05 23:52:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-04-05 23:52:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-04-05 23:52:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-04-05 23:52:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-04-05 23:52:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-04-05 23:52:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-04-05 23:52:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-04-05 23:52:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2022-04-05 23:52:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-04-05 23:52:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2022-04-05 23:52:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-04-05 23:52:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2022-04-05 23:52:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-04-05 23:52:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2022-04-05 23:52:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-04-05 23:52:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2022-04-05 23:52:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-04-05 23:52:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2022-04-05 23:52:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-04-05 23:52:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-04-05 23:52:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-04-05 23:52:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2022-04-05 23:52:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-04-05 23:52:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2022-04-05 23:52:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-04-05 23:52:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2022-04-05 23:52:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-04-05 23:52:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2022-04-05 23:52:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-04-05 23:52:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2022-04-05 23:52:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-04-05 23:52:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 7956 proven. 2628 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-04-05 23:52:30,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:52:30,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25017721] [2022-04-05 23:52:30,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25017721] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:52:30,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430388375] [2022-04-05 23:52:30,121 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 23:52:30,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:52:30,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:52:30,122 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) [2022-04-05 23:52:30,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-04-05 23:52:30,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2022-04-05 23:52:30,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:52:30,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 148 conjunts are in the unsatisfiable core [2022-04-05 23:52:30,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:52:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 7956 proven. 2628 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-04-05 23:52:31,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:52:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 20808 backedges. 7956 proven. 2628 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-04-05 23:52:32,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430388375] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:52:32,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:52:32,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 149, 149] total 151 [2022-04-05 23:52:32,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617435052] [2022-04-05 23:52:32,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:52:32,105 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2022-04-05 23:52:32,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:52:32,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2022-04-05 23:52:32,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5628, Invalid=17022, Unknown=0, NotChecked=0, Total=22650 [2022-04-05 23:52:32,107 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) [2022-04-05 23:52:39,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:52:39,040 INFO L93 Difference]: Finished difference Result 820 states and 894 transitions. [2022-04-05 23:52:39,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-04-05 23:52:39,041 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 [2022-04-05 23:52:39,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:52:39,042 INFO L225 Difference]: With dead ends: 820 [2022-04-05 23:52:39,042 INFO L226 Difference]: Without dead ends: 593 [2022-04-05 23:52:39,046 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1619 GetRequests, 1322 SyntacticMatches, 1 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21745 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=17023, Invalid=71483, Unknown=0, NotChecked=0, Total=88506 [2022-04-05 23:52:39,046 INFO L913 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 [2022-04-05 23:52:39,046 INFO L914 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] [2022-04-05 23:52:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-04-05 23:52:39,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2022-04-05 23:52:39,144 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) [2022-04-05 23:52:39,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 594 transitions. [2022-04-05 23:52:39,145 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 594 transitions. Word has length 589 [2022-04-05 23:52:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:52:39,146 INFO L478 AbstractCegarLoop]: Abstraction has 593 states and 594 transitions. [2022-04-05 23:52:39,146 INFO L479 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) [2022-04-05 23:52:39,146 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 594 transitions. [2022-04-05 23:52:39,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2022-04-05 23:52:39,149 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:52:39,149 INFO L499 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:52:39,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2022-04-05 23:52:39,368 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-04-05 23:52:39,368 INFO L403 AbstractCegarLoop]: === Iteration 146 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:52:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:52:39,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1741137741, now seen corresponding path program 144 times [2022-04-05 23:52:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:52:39,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951440389] [2022-04-05 23:52:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:52:39,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:52:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:52:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:52:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:52:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:52:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:52:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:52:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:52:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:52:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:52:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:52:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:52:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:52:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:52:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:52:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:52:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:52:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:52:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:52:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:52:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:52:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:52:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:52:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:52:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:52:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:52:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:52:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 23:52:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 23:52:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 23:52:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 23:52:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 23:52:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 23:52:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 23:52:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 23:52:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 23:52:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 23:52:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 23:52:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 23:52:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 23:52:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 23:52:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 23:52:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 23:52:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 23:52:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 23:52:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 23:52:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 23:52:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 23:52:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 23:52:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 23:52:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 23:52:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-04-05 23:52:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 23:52:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-04-05 23:52:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 23:52:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-04-05 23:52:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 23:52:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-04-05 23:52:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 23:52:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-04-05 23:52:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 23:52:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-04-05 23:52:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-05 23:52:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-04-05 23:52:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-05 23:52:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-04-05 23:52:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-05 23:52:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2022-04-05 23:52:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-04-05 23:52:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-04-05 23:52:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-04-05 23:52:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-04-05 23:52:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-04-05 23:52:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2022-04-05 23:52:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:41,490 INFO L134 CoverageAnalysis]: Checked inductivity of 20881 backedges. 2772 proven. 7885 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-04-05 23:52:41,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:52:41,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951440389] [2022-04-05 23:52:41,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951440389] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:52:41,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937380075] [2022-04-05 23:52:41,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-05 23:52:41,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:52:41,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:52:41,491 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) [2022-04-05 23:52:41,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-04-05 23:52:41,842 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2022-04-05 23:52:41,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:52:41,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1429 conjuncts, 149 conjunts are in the unsatisfiable core [2022-04-05 23:52:41,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:52:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 20881 backedges. 2845 proven. 7812 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-04-05 23:52:42,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:52:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 20881 backedges. 2845 proven. 7812 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-04-05 23:52:43,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937380075] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:52:43,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:52:43,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78, 78] total 82 [2022-04-05 23:52:43,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984101952] [2022-04-05 23:52:43,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:52:43,704 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-04-05 23:52:43,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:52:43,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-04-05 23:52:43,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2865, Invalid=3777, Unknown=0, NotChecked=0, Total=6642 [2022-04-05 23:52:43,705 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) [2022-04-05 23:52:46,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:52:46,031 INFO L93 Difference]: Finished difference Result 606 states and 608 transitions. [2022-04-05 23:52:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-04-05 23:52:46,031 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 [2022-04-05 23:52:46,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:52:46,033 INFO L225 Difference]: With dead ends: 606 [2022-04-05 23:52:46,033 INFO L226 Difference]: Without dead ends: 604 [2022-04-05 23:52:46,034 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1554 GetRequests, 1394 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=8587, Invalid=16853, Unknown=0, NotChecked=0, Total=25440 [2022-04-05 23:52:46,034 INFO L913 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 [2022-04-05 23:52:46,035 INFO L914 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] [2022-04-05 23:52:46,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-04-05 23:52:46,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 600. [2022-04-05 23:52:46,137 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) [2022-04-05 23:52:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 601 transitions. [2022-04-05 23:52:46,138 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 601 transitions. Word has length 590 [2022-04-05 23:52:46,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:52:46,138 INFO L478 AbstractCegarLoop]: Abstraction has 600 states and 601 transitions. [2022-04-05 23:52:46,139 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.8536585365853657) internal successors, (234), 79 states have internal predecessors, (234), 74 states have call successors, (77), 4 states have call predecessors, (77), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-04-05 23:52:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 601 transitions. [2022-04-05 23:52:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2022-04-05 23:52:46,141 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:52:46,141 INFO L499 BasicCegarLoop]: trace histogram [74, 74, 74, 73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:52:46,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2022-04-05 23:52:46,342 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:52:46,342 INFO L403 AbstractCegarLoop]: === Iteration 147 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:52:46,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:52:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1098235898, now seen corresponding path program 145 times [2022-04-05 23:52:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:52:46,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738437984] [2022-04-05 23:52:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:52:46,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:52:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:52:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-04-05 23:52:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-04-05 23:52:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-04-05 23:52:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-04-05 23:52:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-04-05 23:52:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-04-05 23:52:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-04-05 23:52:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-04-05 23:52:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-04-05 23:52:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-04-05 23:52:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-04-05 23:52:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-04-05 23:52:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-04-05 23:52:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-04-05 23:52:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-04-05 23:52:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-04-05 23:52:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-04-05 23:52:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-04-05 23:52:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-04-05 23:52:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-04-05 23:52:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-04-05 23:52:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-04-05 23:52:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-04-05 23:52:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-04-05 23:52:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-04-05 23:52:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-04-05 23:52:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-04-05 23:52:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-04-05 23:52:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-04-05 23:52:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-04-05 23:52:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-04-05 23:52:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-04-05 23:52:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-04-05 23:52:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-04-05 23:52:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-04-05 23:52:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-04-05 23:52:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-04-05 23:52:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-04-05 23:52:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-04-05 23:52:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-04-05 23:52:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-04-05 23:52:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-04-05 23:52:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-04-05 23:52:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2022-04-05 23:52:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-04-05 23:52:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2022-04-05 23:52:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-04-05 23:52:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2022-04-05 23:52:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-04-05 23:52:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2022-04-05 23:52:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-04-05 23:52:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2022-04-05 23:52:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-04-05 23:52:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2022-04-05 23:52:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-04-05 23:52:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2022-04-05 23:52:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-04-05 23:52:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-04-05 23:52:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-04-05 23:52:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-04-05 23:52:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-04-05 23:52:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-04-05 23:52:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-04-05 23:52:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2022-04-05 23:52:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-04-05 23:52:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2022-04-05 23:52:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-04-05 23:52:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2022-04-05 23:52:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-04-05 23:52:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2022-04-05 23:52:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-04-05 23:52:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2022-04-05 23:52:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-04-05 23:52:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 21389 backedges. 8176 proven. 2701 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-04-05 23:52:51,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:52:51,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738437984] [2022-04-05 23:52:51,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738437984] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:52:51,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920567308] [2022-04-05 23:52:51,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-05 23:52:51,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:52:51,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:52:51,700 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) [2022-04-05 23:52:51,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-04-05 23:52:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:52:51,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 150 conjunts are in the unsatisfiable core [2022-04-05 23:52:51,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:52:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 21389 backedges. 8176 proven. 2701 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-04-05 23:52:52,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:52:53,566 INFO L134 CoverageAnalysis]: Checked inductivity of 21389 backedges. 8176 proven. 2701 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-04-05 23:52:53,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920567308] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:52:53,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:52:53,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 151, 151] total 153 [2022-04-05 23:52:53,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649441541] [2022-04-05 23:52:53,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:52:53,567 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2022-04-05 23:52:53,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:52:53,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2022-04-05 23:52:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5779, Invalid=17477, Unknown=0, NotChecked=0, Total=23256 [2022-04-05 23:52:53,569 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) [2022-04-05 23:53:00,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:53:00,596 INFO L93 Difference]: Finished difference Result 831 states and 906 transitions. [2022-04-05 23:53:00,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-04-05 23:53:00,596 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 [2022-04-05 23:53:00,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:53:00,598 INFO L225 Difference]: With dead ends: 831 [2022-04-05 23:53:00,598 INFO L226 Difference]: Without dead ends: 601 [2022-04-05 23:53:00,602 INFO L912 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 [2022-04-05 23:53:00,602 INFO L913 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 [2022-04-05 23:53:00,602 INFO L914 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] [2022-04-05 23:53:00,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-04-05 23:53:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2022-04-05 23:53:00,686 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) [2022-04-05 23:53:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 602 transitions. [2022-04-05 23:53:00,686 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 602 transitions. Word has length 597 [2022-04-05 23:53:00,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:53:00,687 INFO L478 AbstractCegarLoop]: Abstraction has 601 states and 602 transitions. [2022-04-05 23:53:00,687 INFO L479 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) [2022-04-05 23:53:00,687 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 602 transitions. [2022-04-05 23:53:00,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-04-05 23:53:00,689 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:53:00,689 INFO L499 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:53:00,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2022-04-05 23:53:00,890 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-04-05 23:53:00,890 INFO L403 AbstractCegarLoop]: === Iteration 148 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:53:00,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:53:00,890 INFO L85 PathProgramCache]: Analyzing trace with hash -825220756, now seen corresponding path program 146 times [2022-04-05 23:53:00,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:53:00,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731158289] [2022-04-05 23:53:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:53:00,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:53:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 23:53:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-04-05 23:53:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-04-05 23:53:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-04-05 23:53:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-04-05 23:53:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-04-05 23:53:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-04-05 23:53:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-04-05 23:53:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-04-05 23:53:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-04-05 23:53:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-04-05 23:53:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-04-05 23:53:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-04-05 23:53:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-04-05 23:53:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-04-05 23:53:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-04-05 23:53:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-04-05 23:53:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-04-05 23:53:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-04-05 23:53:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-04-05 23:53:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-04-05 23:53:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-04-05 23:53:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-04-05 23:53:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-04-05 23:53:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-04-05 23:53:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-04-05 23:53:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:02,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-04-05 23:53:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-04-05 23:53:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-04-05 23:53:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-04-05 23:53:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-04-05 23:53:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-04-05 23:53:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-04-05 23:53:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-04-05 23:53:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-04-05 23:53:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-04-05 23:53:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-04-05 23:53:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-04-05 23:53:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-04-05 23:53:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-04-05 23:53:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-04-05 23:53:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-04-05 23:53:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-04-05 23:53:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-04-05 23:53:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-04-05 23:53:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-04-05 23:53:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-04-05 23:53:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-04-05 23:53:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-04-05 23:53:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2022-04-05 23:53:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-04-05 23:53:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2022-04-05 23:53:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-04-05 23:53:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2022-04-05 23:53:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-04-05 23:53:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2022-04-05 23:53:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-04-05 23:53:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2022-04-05 23:53:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-04-05 23:53:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2022-04-05 23:53:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-04-05 23:53:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2022-04-05 23:53:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-04-05 23:53:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-04-05 23:53:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-04-05 23:53:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2022-04-05 23:53:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-04-05 23:53:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2022-04-05 23:53:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-04-05 23:53:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2022-04-05 23:53:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-04-05 23:53:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2022-04-05 23:53:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-04-05 23:53:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2022-04-05 23:53:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 23:53:03,065 INFO L134 CoverageAnalysis]: Checked inductivity of 21463 backedges. 2847 proven. 8104 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-04-05 23:53:03,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 23:53:03,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731158289] [2022-04-05 23:53:03,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731158289] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 23:53:03,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116913970] [2022-04-05 23:53:03,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 23:53:03,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 23:53:03,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 23:53:03,066 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) [2022-04-05 23:53:03,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-04-05 23:53:03,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 23:53:03,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 23:53:03,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 151 conjunts are in the unsatisfiable core [2022-04-05 23:53:03,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 23:53:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 21463 backedges. 2921 proven. 8030 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-04-05 23:53:04,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 23:53:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 21463 backedges. 2921 proven. 8030 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2022-04-05 23:53:04,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116913970] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 23:53:04,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 23:53:04,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79, 79] total 83 [2022-04-05 23:53:04,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035926543] [2022-04-05 23:53:04,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 23:53:04,947 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-04-05 23:53:04,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 23:53:04,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-04-05 23:53:04,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2941, Invalid=3865, Unknown=0, NotChecked=0, Total=6806 [2022-04-05 23:53:04,948 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) [2022-04-05 23:53:07,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 23:53:07,210 INFO L93 Difference]: Finished difference Result 614 states and 616 transitions. [2022-04-05 23:53:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-04-05 23:53:07,210 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 [2022-04-05 23:53:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 23:53:07,215 INFO L225 Difference]: With dead ends: 614 [2022-04-05 23:53:07,215 INFO L226 Difference]: Without dead ends: 612 [2022-04-05 23:53:07,217 INFO L912 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 [2022-04-05 23:53:07,217 INFO L913 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 [2022-04-05 23:53:07,218 INFO L914 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] [2022-04-05 23:53:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-04-05 23:53:07,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 608. [2022-04-05 23:53:07,348 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) [2022-04-05 23:53:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 609 transitions. [2022-04-05 23:53:07,349 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 609 transitions. Word has length 598 [2022-04-05 23:53:07,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 23:53:07,349 INFO L478 AbstractCegarLoop]: Abstraction has 608 states and 609 transitions. [2022-04-05 23:53:07,350 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.855421686746988) internal successors, (237), 80 states have internal predecessors, (237), 75 states have call successors, (78), 4 states have call predecessors, (78), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2022-04-05 23:53:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 609 transitions. [2022-04-05 23:53:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-04-05 23:53:07,353 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 23:53:07,353 INFO L499 BasicCegarLoop]: trace histogram [75, 75, 75, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 23:53:07,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-04-05 23:53:07,570 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-04-05 23:53:07,571 INFO L403 AbstractCegarLoop]: === Iteration 149 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 23:53:07,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 23:53:07,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1037503225, now seen corresponding path program 147 times [2022-04-05 23:53:07,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 23:53:07,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559586724] [2022-04-05 23:53:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 23:53:07,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 23:53:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat