/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread/bigshot_s.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:47:07,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:47:07,377 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 14:47:07,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:47:07,422 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:47:07,422 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:47:07,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:47:07,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:47:07,424 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:47:07,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:47:07,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:47:07,428 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:47:07,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:47:07,429 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:47:07,430 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:47:07,430 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:47:07,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:47:07,430 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:47:07,430 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:47:07,431 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:47:07,431 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:47:07,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:47:07,432 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:47:07,432 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:47:07,432 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:47:07,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:47:07,433 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:47:07,434 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:47:07,434 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:47:07,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:47:07,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:47:07,435 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:47:07,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:47:07,435 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:47:07,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:47:07,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:47:07,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:47:07,695 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:47:07,695 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:47:07,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s.i [2023-12-09 14:47:08,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:47:09,123 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:47:09,124 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s.i [2023-12-09 14:47:09,141 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4835b449/239c842335c84770a295941c56d5f507/FLAG897b29968 [2023-12-09 14:47:09,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4835b449/239c842335c84770a295941c56d5f507 [2023-12-09 14:47:09,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:47:09,156 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:47:09,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:47:09,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:47:09,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:47:09,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59018678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09, skipping insertion in model container [2023-12-09 14:47:09,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,208 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:47:09,580 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s.i[55202,55215] [2023-12-09 14:47:09,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:47:09,601 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:47:09,645 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s.i[55202,55215] [2023-12-09 14:47:09,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:47:09,718 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:47:09,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09 WrapperNode [2023-12-09 14:47:09,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:47:09,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:47:09,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:47:09,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:47:09,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,761 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-12-09 14:47:09,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:47:09,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:47:09,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:47:09,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:47:09,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,849 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:47:09,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:47:09,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:47:09,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:47:09,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:47:09,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:09,937 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) [2023-12-09 14:47:09,952 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 [2023-12-09 14:47:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:47:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:47:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-09 14:47:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 14:47:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 14:47:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 14:47:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 14:47:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 14:47:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:47:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 14:47:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:47:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:47:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:47:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:47:09,985 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:47:10,084 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:47:10,086 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:47:10,221 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:47:10,230 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:47:10,230 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-09 14:47:10,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:47:10 BoogieIcfgContainer [2023-12-09 14:47:10,232 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:47:10,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:47:10,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:47:10,235 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:47:10,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:47:09" (1/3) ... [2023-12-09 14:47:10,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d38c6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:47:10, skipping insertion in model container [2023-12-09 14:47:10,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (2/3) ... [2023-12-09 14:47:10,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d38c6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:47:10, skipping insertion in model container [2023-12-09 14:47:10,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:47:10" (3/3) ... [2023-12-09 14:47:10,237 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2023-12-09 14:47:10,249 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:47:10,249 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 14:47:10,249 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:47:10,316 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 14:47:10,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 91 transitions, 196 flow [2023-12-09 14:47:10,380 INFO L124 PetriNetUnfolderBase]: 5/89 cut-off events. [2023-12-09 14:47:10,381 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:47:10,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-12-09 14:47:10,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 91 transitions, 196 flow [2023-12-09 14:47:10,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 74 transitions, 160 flow [2023-12-09 14:47:10,394 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:47:10,398 INFO L362 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f2b301e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:47:10,399 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 14:47:10,422 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:47:10,422 INFO L124 PetriNetUnfolderBase]: 4/73 cut-off events. [2023-12-09 14:47:10,423 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:47:10,423 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:10,423 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:10,424 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:47:10,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:10,427 INFO L85 PathProgramCache]: Analyzing trace with hash -52224059, now seen corresponding path program 1 times [2023-12-09 14:47:10,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:10,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038702362] [2023-12-09 14:47:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:10,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:10,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:10,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038702362] [2023-12-09 14:47:10,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038702362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:10,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:10,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:47:10,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021684520] [2023-12-09 14:47:10,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:10,817 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 14:47:10,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 14:47:10,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 14:47:10,844 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2023-12-09 14:47:10,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:10,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2023-12-09 14:47:10,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:10,912 INFO L124 PetriNetUnfolderBase]: 2/72 cut-off events. [2023-12-09 14:47:10,912 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-12-09 14:47:10,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 72 events. 2/72 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 47. Up to 8 conditions per place. [2023-12-09 14:47:10,914 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 9 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-12-09 14:47:10,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 180 flow [2023-12-09 14:47:10,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 14:47:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 14:47:10,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2023-12-09 14:47:10,937 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8549450549450549 [2023-12-09 14:47:10,938 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2023-12-09 14:47:10,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2023-12-09 14:47:10,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:10,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2023-12-09 14:47:10,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,953 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,957 INFO L308 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2023-12-09 14:47:10,957 INFO L500 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 180 flow [2023-12-09 14:47:10,958 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,958 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:10,958 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:10,958 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:47:10,959 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:47:10,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:10,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1317293168, now seen corresponding path program 1 times [2023-12-09 14:47:10,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:10,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772464952] [2023-12-09 14:47:10,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:10,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:11,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:11,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772464952] [2023-12-09 14:47:11,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772464952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:11,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:11,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:47:11,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755376664] [2023-12-09 14:47:11,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:11,267 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:47:11,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:11,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:47:11,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:47:11,273 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2023-12-09 14:47:11,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 70.33333333333333) internal successors, (422), 6 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:11,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2023-12-09 14:47:11,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:11,368 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2023-12-09 14:47:11,369 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-12-09 14:47:11,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 71 events. 1/71 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 55. Up to 8 conditions per place. [2023-12-09 14:47:11,370 INFO L140 encePairwiseOnDemand]: 84/91 looper letters, 10 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2023-12-09 14:47:11,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 71 transitions, 210 flow [2023-12-09 14:47:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 14:47:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 14:47:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 425 transitions. [2023-12-09 14:47:11,376 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7783882783882784 [2023-12-09 14:47:11,377 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 425 transitions. [2023-12-09 14:47:11,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 425 transitions. [2023-12-09 14:47:11,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:11,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 425 transitions. [2023-12-09 14:47:11,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,385 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,386 INFO L308 CegarLoopForPetriNet]: 77 programPoint places, 9 predicate places. [2023-12-09 14:47:11,386 INFO L500 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 210 flow [2023-12-09 14:47:11,386 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.33333333333333) internal successors, (422), 6 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,386 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:11,387 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:11,387 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:47:11,387 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:47:11,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:11,388 INFO L85 PathProgramCache]: Analyzing trace with hash 227115492, now seen corresponding path program 1 times [2023-12-09 14:47:11,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:11,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832048048] [2023-12-09 14:47:11,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:11,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:12,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:12,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832048048] [2023-12-09 14:47:12,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832048048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:12,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:12,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 14:47:12,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572261637] [2023-12-09 14:47:12,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:12,216 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 14:47:12,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:12,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 14:47:12,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-09 14:47:12,223 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 91 [2023-12-09 14:47:12,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 210 flow. Second operand has 10 states, 10 states have (on average 49.5) internal successors, (495), 10 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:12,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:12,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 91 [2023-12-09 14:47:12,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:12,523 INFO L124 PetriNetUnfolderBase]: 18/120 cut-off events. [2023-12-09 14:47:12,523 INFO L125 PetriNetUnfolderBase]: For 40/41 co-relation queries the response was YES. [2023-12-09 14:47:12,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 120 events. 18/120 cut-off events. For 40/41 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 176 event pairs, 1 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 152. Up to 26 conditions per place. [2023-12-09 14:47:12,527 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 38 selfloop transitions, 10 changer transitions 0/82 dead transitions. [2023-12-09 14:47:12,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 82 transitions, 328 flow [2023-12-09 14:47:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:47:12,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:47:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 509 transitions. [2023-12-09 14:47:12,535 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5593406593406594 [2023-12-09 14:47:12,535 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 509 transitions. [2023-12-09 14:47:12,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 509 transitions. [2023-12-09 14:47:12,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:12,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 509 transitions. [2023-12-09 14:47:12,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 50.9) internal successors, (509), 10 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:12,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:12,543 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:12,554 INFO L308 CegarLoopForPetriNet]: 77 programPoint places, 18 predicate places. [2023-12-09 14:47:12,554 INFO L500 AbstractCegarLoop]: Abstraction has has 95 places, 82 transitions, 328 flow [2023-12-09 14:47:12,555 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.5) internal successors, (495), 10 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:12,555 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:12,555 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:12,555 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:47:12,555 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:47:12,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:12,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1894340330, now seen corresponding path program 1 times [2023-12-09 14:47:12,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:12,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385912827] [2023-12-09 14:47:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:12,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:13,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385912827] [2023-12-09 14:47:13,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385912827] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:13,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376448301] [2023-12-09 14:47:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:13,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:13,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:13,318 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) [2023-12-09 14:47:13,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 14:47:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:13,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-09 14:47:13,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:13,615 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-09 14:47:13,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-09 14:47:13,664 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 14:47:13,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-09 14:47:13,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:13,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:14,104 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-09 14:47:14,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-12-09 14:47:14,229 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 14:47:14,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-09 14:47:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:14,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:15,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376448301] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:15,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:15,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 18] total 44 [2023-12-09 14:47:15,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146982207] [2023-12-09 14:47:15,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:15,530 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-09 14:47:15,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:15,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-09 14:47:15,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1742, Unknown=0, NotChecked=0, Total=1892 [2023-12-09 14:47:15,536 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 91 [2023-12-09 14:47:15,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 82 transitions, 328 flow. Second operand has 44 states, 44 states have (on average 30.136363636363637) internal successors, (1326), 44 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:15,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:15,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 91 [2023-12-09 14:47:15,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:17,187 INFO L124 PetriNetUnfolderBase]: 42/200 cut-off events. [2023-12-09 14:47:17,187 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-12-09 14:47:17,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 200 events. 42/200 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 509 event pairs, 2 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 427. Up to 81 conditions per place. [2023-12-09 14:47:17,189 INFO L140 encePairwiseOnDemand]: 70/91 looper letters, 61 selfloop transitions, 20 changer transitions 16/119 dead transitions. [2023-12-09 14:47:17,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 119 transitions, 675 flow [2023-12-09 14:47:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-09 14:47:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-12-09 14:47:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 744 transitions. [2023-12-09 14:47:17,192 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34065934065934067 [2023-12-09 14:47:17,193 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 744 transitions. [2023-12-09 14:47:17,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 744 transitions. [2023-12-09 14:47:17,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:17,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 744 transitions. [2023-12-09 14:47:17,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 31.0) internal successors, (744), 24 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:17,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 91.0) internal successors, (2275), 25 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:17,200 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 91.0) internal successors, (2275), 25 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:17,200 INFO L308 CegarLoopForPetriNet]: 77 programPoint places, 41 predicate places. [2023-12-09 14:47:17,201 INFO L500 AbstractCegarLoop]: Abstraction has has 118 places, 119 transitions, 675 flow [2023-12-09 14:47:17,201 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 30.136363636363637) internal successors, (1326), 44 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:17,202 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:17,202 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:17,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 14:47:17,407 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:17,408 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:47:17,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:17,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1821564306, now seen corresponding path program 2 times [2023-12-09 14:47:17,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:17,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699448323] [2023-12-09 14:47:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:17,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:18,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:18,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699448323] [2023-12-09 14:47:18,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699448323] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:18,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468108319] [2023-12-09 14:47:18,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:47:18,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:18,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:18,173 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) [2023-12-09 14:47:18,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 14:47:18,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 14:47:18,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:47:18,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-09 14:47:18,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:18,369 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-09 14:47:18,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-09 14:47:18,398 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 14:47:18,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-09 14:47:18,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:18,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:18,755 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-09 14:47:18,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-12-09 14:47:18,878 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 14:47:18,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-09 14:47:18,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:18,969 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 14:47:18,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-09 14:47:19,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:19,053 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 14:47:19,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-09 14:47:19,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:19,144 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 14:47:19,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-09 14:47:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:19,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:52,616 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_115 Int) (v_ArrVal_122 Int) (v_ArrVal_120 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_28| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_29| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_30| Int) (v_ArrVal_117 Int)) (or (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_115) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_30| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_117) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_29| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_120) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_28| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_122)) c_~v~0.base) c_~v~0.offset)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_28| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_29| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_29| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_30| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_30| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 1)))) is different from false [2023-12-09 14:47:54,669 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_115 Int) (v_ArrVal_122 Int) (v_ArrVal_120 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_28| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_29| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_30| Int) (v_ArrVal_117 Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_28| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_29| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_30| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset| 1) v_ArrVal_115) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_30| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_117) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_29| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_120) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_28| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_122)) c_~v~0.base) c_~v~0.offset)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_29| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_30| 1)))) is different from false [2023-12-09 14:48:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 9 refuted. 6 times theorem prover too weak. 0 trivial. 15 not checked. [2023-12-09 14:48:23,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468108319] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:48:23,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:48:23,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 24] total 55 [2023-12-09 14:48:23,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552348065] [2023-12-09 14:48:23,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:48:23,444 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-09 14:48:23,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:23,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-09 14:48:23,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2508, Unknown=28, NotChecked=206, Total=2970 [2023-12-09 14:48:23,451 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 91 [2023-12-09 14:48:23,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 119 transitions, 675 flow. Second operand has 55 states, 55 states have (on average 29.181818181818183) internal successors, (1605), 55 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:23,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:23,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 91 [2023-12-09 14:48:23,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:25,915 INFO L124 PetriNetUnfolderBase]: 45/207 cut-off events. [2023-12-09 14:48:25,915 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-12-09 14:48:25,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 207 events. 45/207 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 526 event pairs, 2 based on Foata normal form. 1/202 useless extension candidates. Maximal degree in co-relation 588. Up to 90 conditions per place. [2023-12-09 14:48:25,916 INFO L140 encePairwiseOnDemand]: 70/91 looper letters, 0 selfloop transitions, 0 changer transitions 125/125 dead transitions. [2023-12-09 14:48:25,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 125 transitions, 927 flow [2023-12-09 14:48:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-09 14:48:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-12-09 14:48:25,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 768 transitions. [2023-12-09 14:48:25,920 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3245984784446323 [2023-12-09 14:48:25,920 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 768 transitions. [2023-12-09 14:48:25,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 768 transitions. [2023-12-09 14:48:25,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:25,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 768 transitions. [2023-12-09 14:48:25,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 29.53846153846154) internal successors, (768), 26 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:25,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 91.0) internal successors, (2457), 27 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:25,926 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 91.0) internal successors, (2457), 27 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:25,927 INFO L308 CegarLoopForPetriNet]: 77 programPoint places, 64 predicate places. [2023-12-09 14:48:25,927 INFO L500 AbstractCegarLoop]: Abstraction has has 141 places, 125 transitions, 927 flow [2023-12-09 14:48:25,928 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 29.181818181818183) internal successors, (1605), 55 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:25,933 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bigshot_s.i_BEv2_AllErrorsAtOnce [2023-12-09 14:48:25,986 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 14:48:25,987 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 14:48:25,987 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 14:48:25,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-09 14:48:26,191 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:26,192 INFO L457 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-12-09 14:48:26,196 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 14:48:26,196 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 14:48:26,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:48:26 BasicIcfg [2023-12-09 14:48:26,202 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 14:48:26,203 INFO L158 Benchmark]: Toolchain (without parser) took 77046.48ms. Allocated memory was 190.8MB in the beginning and 374.3MB in the end (delta: 183.5MB). Free memory was 140.8MB in the beginning and 256.5MB in the end (delta: -115.7MB). Peak memory consumption was 67.6MB. Max. memory is 8.0GB. [2023-12-09 14:48:26,203 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 14:48:26,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.67ms. Allocated memory is still 190.8MB. Free memory was 140.8MB in the beginning and 107.9MB in the end (delta: 32.9MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-09 14:48:26,204 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.83ms. Allocated memory is still 190.8MB. Free memory was 107.9MB in the beginning and 105.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 14:48:26,204 INFO L158 Benchmark]: Boogie Preprocessor took 95.69ms. Allocated memory is still 190.8MB. Free memory was 105.5MB in the beginning and 162.1MB in the end (delta: -56.6MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. [2023-12-09 14:48:26,204 INFO L158 Benchmark]: RCFGBuilder took 373.52ms. Allocated memory is still 190.8MB. Free memory was 162.1MB in the beginning and 147.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-09 14:48:26,209 INFO L158 Benchmark]: TraceAbstraction took 75969.22ms. Allocated memory was 190.8MB in the beginning and 374.3MB in the end (delta: 183.5MB). Free memory was 146.4MB in the beginning and 256.5MB in the end (delta: -110.1MB). Peak memory consumption was 72.4MB. Max. memory is 8.0GB. [2023-12-09 14:48:26,214 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 561.67ms. Allocated memory is still 190.8MB. Free memory was 140.8MB in the beginning and 107.9MB in the end (delta: 32.9MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.83ms. Allocated memory is still 190.8MB. Free memory was 107.9MB in the beginning and 105.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 95.69ms. Allocated memory is still 190.8MB. Free memory was 105.5MB in the beginning and 162.1MB in the end (delta: -56.6MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. * RCFGBuilder took 373.52ms. Allocated memory is still 190.8MB. Free memory was 162.1MB in the beginning and 147.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 75969.22ms. Allocated memory was 190.8MB in the beginning and 374.3MB in the end (delta: 183.5MB). Free memory was 146.4MB in the beginning and 256.5MB in the end (delta: -110.1MB). Peak memory consumption was 72.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1107]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 75.9s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1272 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1272 mSDsluCounter, 753 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 146 IncrementalHoareTripleChecker+Unchecked, 687 mSDsCounter, 212 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2480 IncrementalHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 212 mSolverCounterUnsat, 66 mSDtfsCounter, 2480 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 439 GetRequests, 262 SyntacticMatches, 17 SemanticMatches, 160 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2039 ImplicationChecksByTransitivity, 67.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=927occurred in iteration=5, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 69.9s InterpolantComputationTime, 507 NumberOfCodeBlocks, 507 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 656 ConstructedInterpolants, 63 QuantifiedInterpolants, 8425 SizeOfPredicates, 35 NumberOfNonLiveVariables, 447 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 14/117 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-09 14:48:26,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...