/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-lit/sssc12_variant-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 06:46:09,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 06:46:09,851 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 [2023-11-30 06:46:09,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 06:46:09,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 06:46:09,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 06:46:09,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 06:46:09,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 06:46:09,884 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 06:46:09,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 06:46:09,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 06:46:09,890 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 06:46:09,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 06:46:09,891 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 06:46:09,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 06:46:09,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 06:46:09,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 06:46:09,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 06:46:09,892 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 06:46:09,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 06:46:09,893 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 06:46:09,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 06:46:09,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 06:46:09,894 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 06:46:09,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 06:46:09,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 06:46:09,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 06:46:09,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 06:46:09,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 06:46:09,895 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 06:46:09,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 06:46:09,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 06:46:09,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 06:46:09,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 06:46:10,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 06:46:10,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 06:46:10,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 06:46:10,159 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 06:46:10,159 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 06:46:10,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/sssc12_variant-pthread.i [2023-11-30 06:46:11,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 06:46:11,572 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 06:46:11,573 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12_variant-pthread.i [2023-11-30 06:46:11,588 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4c5b19f/d5d1cb41cca74dfbb07b6db4eb8a5dd0/FLAGcff9ccfbd [2023-11-30 06:46:11,602 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd4c5b19f/d5d1cb41cca74dfbb07b6db4eb8a5dd0 [2023-11-30 06:46:11,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 06:46:11,606 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 06:46:11,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 06:46:11,608 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 06:46:11,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 06:46:11,612 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 06:46:11" (1/1) ... [2023-11-30 06:46:11,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b5b201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:11, skipping insertion in model container [2023-11-30 06:46:11,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 06:46:11" (1/1) ... [2023-11-30 06:46:11,669 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 06:46:12,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 06:46:12,050 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 06:46:12,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 06:46:12,174 INFO L206 MainTranslator]: Completed translation [2023-11-30 06:46:12,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12 WrapperNode [2023-11-30 06:46:12,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 06:46:12,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 06:46:12,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 06:46:12,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 06:46:12,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12" (1/1) ... [2023-11-30 06:46:12,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12" (1/1) ... [2023-11-30 06:46:12,238 INFO L138 Inliner]: procedures = 273, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 90 [2023-11-30 06:46:12,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 06:46:12,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 06:46:12,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 06:46:12,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 06:46:12,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12" (1/1) ... [2023-11-30 06:46:12,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12" (1/1) ... [2023-11-30 06:46:12,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12" (1/1) ... [2023-11-30 06:46:12,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12" (1/1) ... [2023-11-30 06:46:12,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12" (1/1) ... [2023-11-30 06:46:12,269 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12" (1/1) ... [2023-11-30 06:46:12,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12" (1/1) ... [2023-11-30 06:46:12,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12" (1/1) ... [2023-11-30 06:46:12,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 06:46:12,274 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 06:46:12,274 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 06:46:12,274 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 06:46:12,275 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12" (1/1) ... [2023-11-30 06:46:12,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 06:46:12,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 06:46:12,303 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) [2023-11-30 06:46:12,333 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 [2023-11-30 06:46:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-30 06:46:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-30 06:46:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 06:46:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 06:46:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 06:46:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 06:46:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 06:46:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 06:46:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 06:46:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 06:46:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 06:46:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 06:46:12,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 06:46:12,344 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 06:46:12,456 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 06:46:12,459 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 06:46:12,697 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 06:46:12,711 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 06:46:12,711 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-30 06:46:12,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 06:46:12 BoogieIcfgContainer [2023-11-30 06:46:12,716 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 06:46:12,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 06:46:12,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 06:46:12,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 06:46:12,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 06:46:11" (1/3) ... [2023-11-30 06:46:12,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b792d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 06:46:12, skipping insertion in model container [2023-11-30 06:46:12,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 06:46:12" (2/3) ... [2023-11-30 06:46:12,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b792d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 06:46:12, skipping insertion in model container [2023-11-30 06:46:12,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 06:46:12" (3/3) ... [2023-11-30 06:46:12,725 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12_variant-pthread.i [2023-11-30 06:46:12,739 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 06:46:12,739 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-30 06:46:12,739 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 06:46:12,783 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 06:46:12,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 104 transitions, 212 flow [2023-11-30 06:46:12,889 INFO L124 PetriNetUnfolderBase]: 8/117 cut-off events. [2023-11-30 06:46:12,889 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 06:46:12,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 117 events. 8/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-11-30 06:46:12,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 104 transitions, 212 flow [2023-11-30 06:46:12,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 104 transitions, 212 flow [2023-11-30 06:46:12,916 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 06:46:12,921 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;@4eddf7e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 06:46:12,922 INFO L363 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-30 06:46:12,935 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 06:46:12,936 INFO L124 PetriNetUnfolderBase]: 3/70 cut-off events. [2023-11-30 06:46:12,936 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 06:46:12,936 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 06:46:12,937 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2023-11-30 06:46:12,937 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-30 06:46:12,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 06:46:12,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1148215601, now seen corresponding path program 1 times [2023-11-30 06:46:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 06:46:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246452671] [2023-11-30 06:46:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 06:46:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 06:46:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 06:46:13,086 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 06:46:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 06:46:13,139 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 06:46:13,141 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 06:46:13,142 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-30 06:46:13,144 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-30 06:46:13,144 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-30 06:46:13,144 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-30 06:46:13,145 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-30 06:46:13,146 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-30 06:46:13,146 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-30 06:46:13,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-30 06:46:13,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-30 06:46:13,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-30 06:46:13,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-30 06:46:13,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-30 06:46:13,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-30 06:46:13,148 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 06:46:13,149 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-30 06:46:13,151 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 06:46:13,151 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-30 06:46:13,185 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 06:46:13,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 155 transitions, 320 flow [2023-11-30 06:46:13,222 INFO L124 PetriNetUnfolderBase]: 14/183 cut-off events. [2023-11-30 06:46:13,223 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 06:46:13,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 183 events. 14/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 388 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-11-30 06:46:13,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 155 transitions, 320 flow [2023-11-30 06:46:13,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 155 transitions, 320 flow [2023-11-30 06:46:13,238 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 06:46:13,239 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;@4eddf7e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 06:46:13,240 INFO L363 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-30 06:46:13,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 06:46:13,258 INFO L124 PetriNetUnfolderBase]: 3/74 cut-off events. [2023-11-30 06:46:13,258 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 06:46:13,258 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 06:46:13,258 INFO L232 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] [2023-11-30 06:46:13,259 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-30 06:46:13,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 06:46:13,259 INFO L85 PathProgramCache]: Analyzing trace with hash 36357514, now seen corresponding path program 1 times [2023-11-30 06:46:13,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 06:46:13,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522042303] [2023-11-30 06:46:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 06:46:13,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 06:46:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 06:46:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 06:46:13,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 06:46:13,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522042303] [2023-11-30 06:46:13,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522042303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 06:46:13,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 06:46:13,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 06:46:13,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676970849] [2023-11-30 06:46:13,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 06:46:13,476 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 06:46:13,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 06:46:13,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 06:46:13,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 06:46:13,504 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 155 [2023-11-30 06:46:13,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 155 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2023-11-30 06:46:13,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 06:46:13,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 155 [2023-11-30 06:46:13,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 06:46:13,808 INFO L124 PetriNetUnfolderBase]: 200/1250 cut-off events. [2023-11-30 06:46:13,808 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-30 06:46:13,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 1250 events. 200/1250 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9689 event pairs, 118 based on Foata normal form. 320/1382 useless extension candidates. Maximal degree in co-relation 1458. Up to 244 conditions per place. [2023-11-30 06:46:13,823 INFO L140 encePairwiseOnDemand]: 135/155 looper letters, 54 selfloop transitions, 3 changer transitions 1/156 dead transitions. [2023-11-30 06:46:13,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 156 transitions, 441 flow [2023-11-30 06:46:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 06:46:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 06:46:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2023-11-30 06:46:13,839 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.886021505376344 [2023-11-30 06:46:13,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2023-11-30 06:46:13,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2023-11-30 06:46:13,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 06:46:13,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2023-11-30 06:46:13,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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) [2023-11-30 06:46:13,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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) [2023-11-30 06:46:13,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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) [2023-11-30 06:46:13,895 INFO L307 CegarLoopForPetriNet]: 148 programPoint places, -12 predicate places. [2023-11-30 06:46:13,895 INFO L500 AbstractCegarLoop]: Abstraction has has 136 places, 156 transitions, 441 flow [2023-11-30 06:46:13,896 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2023-11-30 06:46:13,896 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 06:46:13,896 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2023-11-30 06:46:13,896 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 06:46:13,897 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-30 06:46:13,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 06:46:13,897 INFO L85 PathProgramCache]: Analyzing trace with hash -236053436, now seen corresponding path program 1 times [2023-11-30 06:46:13,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 06:46:13,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867945291] [2023-11-30 06:46:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 06:46:13,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 06:46:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 06:46:13,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 06:46:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 06:46:13,998 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 06:46:13,998 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 06:46:14,000 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-30 06:46:14,001 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-30 06:46:14,001 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-30 06:46:14,001 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-30 06:46:14,001 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-30 06:46:14,001 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-30 06:46:14,002 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-30 06:46:14,002 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-30 06:46:14,002 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-30 06:46:14,002 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-30 06:46:14,002 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-30 06:46:14,003 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-30 06:46:14,003 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-30 06:46:14,003 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-30 06:46:14,004 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-30 06:46:14,006 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-30 06:46:14,007 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-30 06:46:14,008 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-30 06:46:14,008 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-30 06:46:14,012 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 06:46:14,012 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-30 06:46:14,013 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 06:46:14,013 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-30 06:46:14,060 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 06:46:14,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 206 transitions, 430 flow [2023-11-30 06:46:14,094 INFO L124 PetriNetUnfolderBase]: 20/249 cut-off events. [2023-11-30 06:46:14,094 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-30 06:46:14,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 249 events. 20/249 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 696 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-11-30 06:46:14,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 206 transitions, 430 flow [2023-11-30 06:46:14,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 206 transitions, 430 flow [2023-11-30 06:46:14,099 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 06:46:14,100 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;@4eddf7e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 06:46:14,100 INFO L363 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-30 06:46:14,106 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 06:46:14,106 INFO L124 PetriNetUnfolderBase]: 3/74 cut-off events. [2023-11-30 06:46:14,106 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 06:46:14,106 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 06:46:14,106 INFO L232 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] [2023-11-30 06:46:14,107 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-30 06:46:14,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 06:46:14,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1477876548, now seen corresponding path program 1 times [2023-11-30 06:46:14,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 06:46:14,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578474566] [2023-11-30 06:46:14,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 06:46:14,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 06:46:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 06:46:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 06:46:14,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 06:46:14,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578474566] [2023-11-30 06:46:14,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578474566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 06:46:14,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 06:46:14,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 06:46:14,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457783261] [2023-11-30 06:46:14,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 06:46:14,208 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 06:46:14,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 06:46:14,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 06:46:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 06:46:14,211 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 206 [2023-11-30 06:46:14,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 206 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-11-30 06:46:14,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 06:46:14,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 206 [2023-11-30 06:46:14,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 06:46:16,684 INFO L124 PetriNetUnfolderBase]: 5365/19460 cut-off events. [2023-11-30 06:46:16,684 INFO L125 PetriNetUnfolderBase]: For 1105/1105 co-relation queries the response was YES. [2023-11-30 06:46:16,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27767 conditions, 19460 events. 5365/19460 cut-off events. For 1105/1105 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 245195 event pairs, 2922 based on Foata normal form. 5021/21179 useless extension candidates. Maximal degree in co-relation 25063. Up to 3995 conditions per place. [2023-11-30 06:46:16,968 INFO L140 encePairwiseOnDemand]: 178/206 looper letters, 81 selfloop transitions, 4 changer transitions 1/213 dead transitions. [2023-11-30 06:46:16,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 213 transitions, 626 flow [2023-11-30 06:46:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 06:46:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 06:46:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 543 transitions. [2023-11-30 06:46:16,971 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8786407766990292 [2023-11-30 06:46:16,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 543 transitions. [2023-11-30 06:46:16,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 543 transitions. [2023-11-30 06:46:16,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 06:46:16,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 543 transitions. [2023-11-30 06:46:16,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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) [2023-11-30 06:46:16,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-11-30 06:46:16,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-11-30 06:46:16,979 INFO L307 CegarLoopForPetriNet]: 196 programPoint places, -15 predicate places. [2023-11-30 06:46:16,980 INFO L500 AbstractCegarLoop]: Abstraction has has 181 places, 213 transitions, 626 flow [2023-11-30 06:46:16,980 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-11-30 06:46:16,980 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 06:46:16,980 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 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] [2023-11-30 06:46:16,980 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 06:46:16,981 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-30 06:46:16,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 06:46:16,981 INFO L85 PathProgramCache]: Analyzing trace with hash -699880201, now seen corresponding path program 1 times [2023-11-30 06:46:16,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 06:46:16,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224951643] [2023-11-30 06:46:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 06:46:16,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 06:46:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 06:46:17,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 06:46:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 06:46:17,055 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 06:46:17,055 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 06:46:17,056 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-30 06:46:17,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-30 06:46:17,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-30 06:46:17,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-30 06:46:17,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-30 06:46:17,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-30 06:46:17,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-30 06:46:17,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-30 06:46:17,060 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-30 06:46:17,060 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-30 06:46:17,060 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-30 06:46:17,061 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-30 06:46:17,061 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-11-30 06:46:17,061 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-11-30 06:46:17,061 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-11-30 06:46:17,062 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-11-30 06:46:17,062 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-11-30 06:46:17,062 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-30 06:46:17,062 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-30 06:46:17,062 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-30 06:46:17,062 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-30 06:46:17,062 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-30 06:46:17,063 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-30 06:46:17,063 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-30 06:46:17,063 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-30 06:46:17,063 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 06:46:17,063 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-30 06:46:17,064 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 06:46:17,064 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-30 06:46:17,114 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 06:46:17,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 257 transitions, 542 flow [2023-11-30 06:46:17,168 INFO L124 PetriNetUnfolderBase]: 26/315 cut-off events. [2023-11-30 06:46:17,169 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-30 06:46:17,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 315 events. 26/315 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1022 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 257. Up to 10 conditions per place. [2023-11-30 06:46:17,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 257 transitions, 542 flow [2023-11-30 06:46:17,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 257 transitions, 542 flow [2023-11-30 06:46:17,176 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 06:46:17,182 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;@4eddf7e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 06:46:17,182 INFO L363 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-30 06:46:17,188 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 06:46:17,188 INFO L124 PetriNetUnfolderBase]: 3/72 cut-off events. [2023-11-30 06:46:17,188 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 06:46:17,188 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 06:46:17,188 INFO L232 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] [2023-11-30 06:46:17,189 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-30 06:46:17,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 06:46:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1140553198, now seen corresponding path program 1 times [2023-11-30 06:46:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 06:46:17,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793928264] [2023-11-30 06:46:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 06:46:17,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 06:46:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 06:46:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 06:46:17,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 06:46:17,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793928264] [2023-11-30 06:46:17,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793928264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 06:46:17,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 06:46:17,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 06:46:17,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008558770] [2023-11-30 06:46:17,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 06:46:17,270 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 06:46:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 06:46:17,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 06:46:17,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 06:46:17,272 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 257 [2023-11-30 06:46:17,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 257 transitions, 542 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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) [2023-11-30 06:46:17,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 06:46:17,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 257 [2023-11-30 06:46:17,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 06:46:48,729 INFO L124 PetriNetUnfolderBase]: 116263/322766 cut-off events. [2023-11-30 06:46:48,729 INFO L125 PetriNetUnfolderBase]: For 26198/26198 co-relation queries the response was YES. [2023-11-30 06:46:50,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484160 conditions, 322766 events. 116263/322766 cut-off events. For 26198/26198 co-relation queries the response was YES. Maximal size of possible extension queue 9604. Compared 5239050 event pairs, 54708 based on Foata normal form. 81854/344150 useless extension candidates. Maximal degree in co-relation 438798. Up to 89529 conditions per place. [2023-11-30 06:46:52,828 INFO L140 encePairwiseOnDemand]: 221/257 looper letters, 108 selfloop transitions, 5 changer transitions 1/270 dead transitions. [2023-11-30 06:46:52,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 270 transitions, 815 flow [2023-11-30 06:46:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 06:46:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 06:46:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2023-11-30 06:46:52,831 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.874189364461738 [2023-11-30 06:46:52,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2023-11-30 06:46:52,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2023-11-30 06:46:52,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 06:46:52,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2023-11-30 06:46:52,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 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) [2023-11-30 06:46:52,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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) [2023-11-30 06:46:52,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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) [2023-11-30 06:46:52,836 INFO L307 CegarLoopForPetriNet]: 244 programPoint places, -18 predicate places. [2023-11-30 06:46:52,836 INFO L500 AbstractCegarLoop]: Abstraction has has 226 places, 270 transitions, 815 flow [2023-11-30 06:46:52,836 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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) [2023-11-30 06:46:52,836 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 06:46:52,837 INFO L232 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] [2023-11-30 06:46:52,837 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 06:46:52,837 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-30 06:46:52,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 06:46:52,837 INFO L85 PathProgramCache]: Analyzing trace with hash 615956195, now seen corresponding path program 1 times [2023-11-30 06:46:52,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 06:46:52,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521075618] [2023-11-30 06:46:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 06:46:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 06:46:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 06:46:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 06:46:52,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 06:46:52,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521075618] [2023-11-30 06:46:52,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521075618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 06:46:52,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 06:46:52,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 06:46:52,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534722923] [2023-11-30 06:46:52,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 06:46:52,926 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 06:46:52,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 06:46:52,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 06:46:52,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 06:46:52,928 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 257 [2023-11-30 06:46:52,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 270 transitions, 815 flow. Second operand has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-30 06:46:52,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 06:46:52,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 257 [2023-11-30 06:46:52,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 06:47:43,528 INFO L124 PetriNetUnfolderBase]: 199933/514617 cut-off events. [2023-11-30 06:47:43,529 INFO L125 PetriNetUnfolderBase]: For 164546/168184 co-relation queries the response was YES. [2023-11-30 06:47:47,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915396 conditions, 514617 events. 199933/514617 cut-off events. For 164546/168184 co-relation queries the response was YES. Maximal size of possible extension queue 15360. Compared 8411604 event pairs, 72445 based on Foata normal form. 2144/409660 useless extension candidates. Maximal degree in co-relation 299747. Up to 176685 conditions per place. [2023-11-30 06:47:50,563 INFO L140 encePairwiseOnDemand]: 253/257 looper letters, 75 selfloop transitions, 4 changer transitions 1/306 dead transitions. [2023-11-30 06:47:50,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 306 transitions, 1189 flow [2023-11-30 06:47:50,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 06:47:50,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 06:47:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 886 transitions. [2023-11-30 06:47:50,566 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8618677042801557 [2023-11-30 06:47:50,566 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 886 transitions. [2023-11-30 06:47:50,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 886 transitions. [2023-11-30 06:47:50,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 06:47:50,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 886 transitions. [2023-11-30 06:47:50,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 221.5) internal successors, (886), 4 states have internal predecessors, (886), 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) [2023-11-30 06:47:50,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 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) [2023-11-30 06:47:50,571 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 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) [2023-11-30 06:47:50,572 INFO L307 CegarLoopForPetriNet]: 244 programPoint places, -15 predicate places. [2023-11-30 06:47:50,572 INFO L500 AbstractCegarLoop]: Abstraction has has 229 places, 306 transitions, 1189 flow [2023-11-30 06:47:50,572 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-30 06:47:50,572 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 06:47:50,573 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 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] [2023-11-30 06:47:50,573 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 06:47:50,573 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-30 06:47:50,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 06:47:50,573 INFO L85 PathProgramCache]: Analyzing trace with hash 760239783, now seen corresponding path program 1 times [2023-11-30 06:47:50,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 06:47:50,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259839475] [2023-11-30 06:47:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 06:47:50,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 06:47:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 06:47:50,591 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 06:47:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 06:47:50,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 06:47:50,608 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 06:47:50,608 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-30 06:47:50,608 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2023-11-30 06:47:50,608 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2023-11-30 06:47:50,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2023-11-30 06:47:50,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2023-11-30 06:47:50,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2023-11-30 06:47:50,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2023-11-30 06:47:50,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2023-11-30 06:47:50,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2023-11-30 06:47:50,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2023-11-30 06:47:50,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2023-11-30 06:47:50,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2023-11-30 06:47:50,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2023-11-30 06:47:50,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2023-11-30 06:47:50,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2023-11-30 06:47:50,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2023-11-30 06:47:50,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2023-11-30 06:47:50,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2023-11-30 06:47:50,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2023-11-30 06:47:50,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2023-11-30 06:47:50,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2023-11-30 06:47:50,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2023-11-30 06:47:50,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2023-11-30 06:47:50,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2023-11-30 06:47:50,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2023-11-30 06:47:50,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2023-11-30 06:47:50,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2023-11-30 06:47:50,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2023-11-30 06:47:50,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2023-11-30 06:47:50,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2023-11-30 06:47:50,612 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2023-11-30 06:47:50,612 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 06:47:50,612 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-30 06:47:50,612 WARN L227 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 06:47:50,612 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-30 06:47:50,644 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 06:47:50,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 308 transitions, 656 flow [2023-11-30 06:47:50,864 INFO L124 PetriNetUnfolderBase]: 32/381 cut-off events. [2023-11-30 06:47:50,864 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-30 06:47:50,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 381 events. 32/381 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1333 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 328. Up to 12 conditions per place. [2023-11-30 06:47:50,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 308 transitions, 656 flow [2023-11-30 06:47:50,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 308 transitions, 656 flow [2023-11-30 06:47:50,873 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 06:47:50,873 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;@4eddf7e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 06:47:50,873 INFO L363 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-11-30 06:47:50,876 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 06:47:50,876 INFO L124 PetriNetUnfolderBase]: 3/72 cut-off events. [2023-11-30 06:47:50,876 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 06:47:50,877 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 06:47:50,877 INFO L232 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] [2023-11-30 06:47:50,877 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-30 06:47:50,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 06:47:50,877 INFO L85 PathProgramCache]: Analyzing trace with hash -847400416, now seen corresponding path program 1 times [2023-11-30 06:47:50,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 06:47:50,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485038691] [2023-11-30 06:47:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 06:47:50,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 06:47:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 06:47:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 06:47:50,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 06:47:50,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485038691] [2023-11-30 06:47:50,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485038691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 06:47:50,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 06:47:50,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 06:47:50,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649176266] [2023-11-30 06:47:50,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 06:47:50,944 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 06:47:50,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 06:47:50,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 06:47:50,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 06:47:50,946 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 308 [2023-11-30 06:47:50,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 308 transitions, 656 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 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) [2023-11-30 06:47:50,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 06:47:50,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 308 [2023-11-30 06:47:50,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand