/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/goblint-regression/28-race_reach_94-alloc_region_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 08:13:58,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 08:13:58,109 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 08:13:58,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 08:13:58,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 08:13:58,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 08:13:58,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 08:13:58,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 08:13:58,132 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 08:13:58,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 08:13:58,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 08:13:58,133 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 08:13:58,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 08:13:58,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 08:13:58,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 08:13:58,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 08:13:58,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 08:13:58,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 08:13:58,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 08:13:58,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 08:13:58,135 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 08:13:58,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 08:13:58,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 08:13:58,136 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 08:13:58,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 08:13:58,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 08:13:58,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 08:13:58,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 08:13:58,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 08:13:58,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 08:13:58,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 08:13:58,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 08:13:58,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 08:13:58,138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 08:13:58,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 08:13:58,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 08:13:58,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 08:13:58,354 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 08:13:58,354 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 08:13:58,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-30 08:13:59,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 08:13:59,775 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 08:13:59,776 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-30 08:13:59,806 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5704f3595/dc882a5e94e243f4874c019983c588bb/FLAG56b7433a3 [2023-11-30 08:13:59,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5704f3595/dc882a5e94e243f4874c019983c588bb [2023-11-30 08:13:59,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 08:13:59,823 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 08:13:59,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 08:13:59,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 08:13:59,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 08:13:59,828 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 08:13:59" (1/1) ... [2023-11-30 08:13:59,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b0d43e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:13:59, skipping insertion in model container [2023-11-30 08:13:59,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 08:13:59" (1/1) ... [2023-11-30 08:13:59,888 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 08:14:00,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 08:14:00,360 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 08:14:00,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 08:14:00,462 INFO L206 MainTranslator]: Completed translation [2023-11-30 08:14:00,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00 WrapperNode [2023-11-30 08:14:00,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 08:14:00,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 08:14:00,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 08:14:00,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 08:14:00,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00" (1/1) ... [2023-11-30 08:14:00,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00" (1/1) ... [2023-11-30 08:14:00,516 INFO L138 Inliner]: procedures = 378, calls = 83, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 287 [2023-11-30 08:14:00,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 08:14:00,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 08:14:00,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 08:14:00,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 08:14:00,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00" (1/1) ... [2023-11-30 08:14:00,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00" (1/1) ... [2023-11-30 08:14:00,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00" (1/1) ... [2023-11-30 08:14:00,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00" (1/1) ... [2023-11-30 08:14:00,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00" (1/1) ... [2023-11-30 08:14:00,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00" (1/1) ... [2023-11-30 08:14:00,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00" (1/1) ... [2023-11-30 08:14:00,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00" (1/1) ... [2023-11-30 08:14:00,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 08:14:00,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 08:14:00,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 08:14:00,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 08:14:00,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00" (1/1) ... [2023-11-30 08:14:00,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 08:14:00,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 08:14:00,601 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 08:14:00,603 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 08:14:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 08:14:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-30 08:14:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 08:14:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-30 08:14:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 08:14:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 08:14:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 08:14:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 08:14:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 08:14:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 08:14:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-30 08:14:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-30 08:14:00,621 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-30 08:14:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 08:14:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 08:14:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 08:14:00,623 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 08:14:00,809 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 08:14:00,811 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 08:14:01,137 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 08:14:01,171 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 08:14:01,171 INFO L309 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-30 08:14:01,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 08:14:01 BoogieIcfgContainer [2023-11-30 08:14:01,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 08:14:01,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 08:14:01,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 08:14:01,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 08:14:01,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 08:13:59" (1/3) ... [2023-11-30 08:14:01,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe7e559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 08:14:01, skipping insertion in model container [2023-11-30 08:14:01,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:14:00" (2/3) ... [2023-11-30 08:14:01,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe7e559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 08:14:01, skipping insertion in model container [2023-11-30 08:14:01,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 08:14:01" (3/3) ... [2023-11-30 08:14:01,179 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2023-11-30 08:14:01,196 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 08:14:01,197 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-30 08:14:01,197 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 08:14:01,270 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-30 08:14:01,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 296 transitions, 599 flow [2023-11-30 08:14:01,428 INFO L124 PetriNetUnfolderBase]: 48/424 cut-off events. [2023-11-30 08:14:01,428 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 08:14:01,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 424 events. 48/424 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1396 event pairs, 0 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2023-11-30 08:14:01,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 296 transitions, 599 flow [2023-11-30 08:14:01,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 293 transitions, 593 flow [2023-11-30 08:14:01,465 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 08:14:01,472 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;@3895140e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 08:14:01,472 INFO L363 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-30 08:14:01,493 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 08:14:01,494 INFO L124 PetriNetUnfolderBase]: 1/68 cut-off events. [2023-11-30 08:14:01,494 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 08:14:01,494 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:14:01,495 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] [2023-11-30 08:14:01,495 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-30 08:14:01,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:14:01,501 INFO L85 PathProgramCache]: Analyzing trace with hash -616913333, now seen corresponding path program 1 times [2023-11-30 08:14:01,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:14:01,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557824638] [2023-11-30 08:14:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:14:01,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:14:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:14:01,883 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 08:14:01,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:14:01,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557824638] [2023-11-30 08:14:01,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557824638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:14:01,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:14:01,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 08:14:01,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445436476] [2023-11-30 08:14:01,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:14:01,894 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 08:14:01,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:14:01,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 08:14:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 08:14:01,937 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 296 [2023-11-30 08:14:01,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 293 transitions, 593 flow. Second operand has 4 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 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 08:14:01,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:14:01,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 296 [2023-11-30 08:14:01,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:14:02,361 INFO L124 PetriNetUnfolderBase]: 225/1751 cut-off events. [2023-11-30 08:14:02,361 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-30 08:14:02,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2193 conditions, 1751 events. 225/1751 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 12675 event pairs, 170 based on Foata normal form. 270/1848 useless extension candidates. Maximal degree in co-relation 2111. Up to 339 conditions per place. [2023-11-30 08:14:02,375 INFO L140 encePairwiseOnDemand]: 262/296 looper letters, 62 selfloop transitions, 4 changer transitions 0/290 dead transitions. [2023-11-30 08:14:02,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 290 transitions, 719 flow [2023-11-30 08:14:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 08:14:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 08:14:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1288 transitions. [2023-11-30 08:14:02,394 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8702702702702703 [2023-11-30 08:14:02,395 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1288 transitions. [2023-11-30 08:14:02,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1288 transitions. [2023-11-30 08:14:02,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:14:02,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1288 transitions. [2023-11-30 08:14:02,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.6) internal successors, (1288), 5 states have internal predecessors, (1288), 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 08:14:02,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 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 08:14:02,414 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 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 08:14:02,417 INFO L307 CegarLoopForPetriNet]: 266 programPoint places, -4 predicate places. [2023-11-30 08:14:02,417 INFO L500 AbstractCegarLoop]: Abstraction has has 262 places, 290 transitions, 719 flow [2023-11-30 08:14:02,418 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 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 08:14:02,418 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:14:02,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:14:02,419 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 08:14:02,420 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-30 08:14:02,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:14:02,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1166104993, now seen corresponding path program 1 times [2023-11-30 08:14:02,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:14:02,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990314477] [2023-11-30 08:14:02,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:14:02,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:14:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 08:14:02,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 08:14:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 08:14:02,547 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 08:14:02,548 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 08:14:02,549 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-30 08:14:02,550 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-30 08:14:02,551 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-30 08:14:02,551 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-30 08:14:02,551 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-30 08:14:02,551 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-30 08:14:02,552 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-30 08:14:02,552 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-30 08:14:02,552 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-30 08:14:02,552 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-30 08:14:02,553 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-30 08:14:02,553 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-30 08:14:02,553 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-30 08:14:02,554 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-30 08:14:02,554 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-30 08:14:02,554 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-30 08:14:02,554 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-30 08:14:02,554 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 08:14:02,555 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-30 08:14:02,556 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 08:14:02,556 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-30 08:14:02,616 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 08:14:02,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 398 transitions, 812 flow [2023-11-30 08:14:02,737 INFO L124 PetriNetUnfolderBase]: 81/692 cut-off events. [2023-11-30 08:14:02,737 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-30 08:14:02,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 692 events. 81/692 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2963 event pairs, 0 based on Foata normal form. 0/577 useless extension candidates. Maximal degree in co-relation 426. Up to 12 conditions per place. [2023-11-30 08:14:02,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 398 transitions, 812 flow [2023-11-30 08:14:02,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 398 transitions, 812 flow [2023-11-30 08:14:02,759 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 08:14:02,763 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;@3895140e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 08:14:02,763 INFO L363 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-30 08:14:02,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 08:14:02,772 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-11-30 08:14:02,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 08:14:02,773 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:14:02,773 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] [2023-11-30 08:14:02,775 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 08:14:02,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:14:02,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2085624515, now seen corresponding path program 1 times [2023-11-30 08:14:02,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:14:02,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731980800] [2023-11-30 08:14:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:14:02,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:14:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:14:02,925 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 08:14:02,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:14:02,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731980800] [2023-11-30 08:14:02,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731980800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:14:02,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:14:02,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 08:14:02,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911551966] [2023-11-30 08:14:02,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:14:02,927 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 08:14:02,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:14:02,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 08:14:02,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 08:14:02,934 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 398 [2023-11-30 08:14:02,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 398 transitions, 812 flow. Second operand has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 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 08:14:02,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:14:02,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 398 [2023-11-30 08:14:02,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:14:06,670 INFO L124 PetriNetUnfolderBase]: 5470/22285 cut-off events. [2023-11-30 08:14:06,670 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2023-11-30 08:14:06,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30582 conditions, 22285 events. 5470/22285 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 274258 event pairs, 5150 based on Foata normal form. 5959/25917 useless extension candidates. Maximal degree in co-relation 3101. Up to 8137 conditions per place. [2023-11-30 08:14:06,903 INFO L140 encePairwiseOnDemand]: 352/398 looper letters, 81 selfloop transitions, 4 changer transitions 0/387 dead transitions. [2023-11-30 08:14:06,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 387 transitions, 960 flow [2023-11-30 08:14:06,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 08:14:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 08:14:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1704 transitions. [2023-11-30 08:14:06,908 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8562814070351759 [2023-11-30 08:14:06,909 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1704 transitions. [2023-11-30 08:14:06,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1704 transitions. [2023-11-30 08:14:06,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:14:06,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1704 transitions. [2023-11-30 08:14:06,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 340.8) internal successors, (1704), 5 states have internal predecessors, (1704), 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 08:14:06,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 398.0) internal successors, (2388), 6 states have internal predecessors, (2388), 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 08:14:06,919 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 398.0) internal successors, (2388), 6 states have internal predecessors, (2388), 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 08:14:06,920 INFO L307 CegarLoopForPetriNet]: 358 programPoint places, -5 predicate places. [2023-11-30 08:14:06,920 INFO L500 AbstractCegarLoop]: Abstraction has has 353 places, 387 transitions, 960 flow [2023-11-30 08:14:06,921 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 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 08:14:06,921 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:14:06,921 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:14:06,921 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 08:14:06,921 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 08:14:06,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:14:06,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1991020834, now seen corresponding path program 1 times [2023-11-30 08:14:06,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:14:06,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916870349] [2023-11-30 08:14:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:14:06,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:14:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:14:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:14:07,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:14:07,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916870349] [2023-11-30 08:14:07,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916870349] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 08:14:07,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062111380] [2023-11-30 08:14:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:14:07,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 08:14:07,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 08:14:07,132 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) [2023-11-30 08:14:07,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-30 08:14:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:14:07,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 08:14:07,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 08:14:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:14:07,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 08:14:07,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062111380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:14:07,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 08:14:07,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 08:14:07,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693329280] [2023-11-30 08:14:07,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:14:07,371 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 08:14:07,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:14:07,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 08:14:07,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 08:14:07,379 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 398 [2023-11-30 08:14:07,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 387 transitions, 960 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 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 08:14:07,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:14:07,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 398 [2023-11-30 08:14:07,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:14:10,210 INFO L124 PetriNetUnfolderBase]: 5283/20748 cut-off events. [2023-11-30 08:14:10,211 INFO L125 PetriNetUnfolderBase]: For 2770/7098 co-relation queries the response was YES. [2023-11-30 08:14:10,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36614 conditions, 20748 events. 5283/20748 cut-off events. For 2770/7098 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 250648 event pairs, 3265 based on Foata normal form. 30/18654 useless extension candidates. Maximal degree in co-relation 9537. Up to 7804 conditions per place. [2023-11-30 08:14:10,356 INFO L140 encePairwiseOnDemand]: 392/398 looper letters, 117 selfloop transitions, 7 changer transitions 0/426 dead transitions. [2023-11-30 08:14:10,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 426 transitions, 1364 flow [2023-11-30 08:14:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 08:14:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 08:14:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2281 transitions. [2023-11-30 08:14:10,361 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8187365398420675 [2023-11-30 08:14:10,361 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2281 transitions. [2023-11-30 08:14:10,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2281 transitions. [2023-11-30 08:14:10,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:14:10,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2281 transitions. [2023-11-30 08:14:10,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 325.85714285714283) internal successors, (2281), 7 states have internal predecessors, (2281), 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 08:14:10,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 398.0) internal successors, (3184), 8 states have internal predecessors, (3184), 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 08:14:10,373 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 398.0) internal successors, (3184), 8 states have internal predecessors, (3184), 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 08:14:10,373 INFO L307 CegarLoopForPetriNet]: 358 programPoint places, 0 predicate places. [2023-11-30 08:14:10,374 INFO L500 AbstractCegarLoop]: Abstraction has has 358 places, 426 transitions, 1364 flow [2023-11-30 08:14:10,375 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 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 08:14:10,375 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:14:10,375 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:14:10,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-30 08:14:10,588 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 [2023-11-30 08:14:10,588 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 08:14:10,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:14:10,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1592102567, now seen corresponding path program 1 times [2023-11-30 08:14:10,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:14:10,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600937019] [2023-11-30 08:14:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:14:10,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:14:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:14:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 08:14:10,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:14:10,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600937019] [2023-11-30 08:14:10,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600937019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:14:10,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:14:10,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 08:14:10,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171659105] [2023-11-30 08:14:10,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:14:10,672 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 08:14:10,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:14:10,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 08:14:10,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 08:14:10,674 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 398 [2023-11-30 08:14:10,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 426 transitions, 1364 flow. Second operand has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 08:14:10,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:14:10,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 398 [2023-11-30 08:14:10,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:14:13,224 INFO L124 PetriNetUnfolderBase]: 5209/21623 cut-off events. [2023-11-30 08:14:13,224 INFO L125 PetriNetUnfolderBase]: For 7956/13658 co-relation queries the response was YES. [2023-11-30 08:14:13,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45007 conditions, 21623 events. 5209/21623 cut-off events. For 7956/13658 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 264354 event pairs, 1566 based on Foata normal form. 259/19961 useless extension candidates. Maximal degree in co-relation 25380. Up to 7676 conditions per place. [2023-11-30 08:14:13,453 INFO L140 encePairwiseOnDemand]: 392/398 looper letters, 155 selfloop transitions, 8 changer transitions 0/465 dead transitions. [2023-11-30 08:14:13,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 465 transitions, 1924 flow [2023-11-30 08:14:13,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 08:14:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 08:14:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1648 transitions. [2023-11-30 08:14:13,457 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.828140703517588 [2023-11-30 08:14:13,457 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1648 transitions. [2023-11-30 08:14:13,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1648 transitions. [2023-11-30 08:14:13,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:14:13,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1648 transitions. [2023-11-30 08:14:13,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 329.6) internal successors, (1648), 5 states have internal predecessors, (1648), 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 08:14:13,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 398.0) internal successors, (2388), 6 states have internal predecessors, (2388), 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 08:14:13,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 398.0) internal successors, (2388), 6 states have internal predecessors, (2388), 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 08:14:13,473 INFO L307 CegarLoopForPetriNet]: 358 programPoint places, 3 predicate places. [2023-11-30 08:14:13,473 INFO L500 AbstractCegarLoop]: Abstraction has has 361 places, 465 transitions, 1924 flow [2023-11-30 08:14:13,474 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 08:14:13,475 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:14:13,475 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:14:13,475 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 08:14:13,476 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-30 08:14:13,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:14:13,476 INFO L85 PathProgramCache]: Analyzing trace with hash -429173930, now seen corresponding path program 1 times [2023-11-30 08:14:13,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:14:13,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267679891] [2023-11-30 08:14:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:14:13,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:14:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 08:14:13,510 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 08:14:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 08:14:13,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 08:14:13,550 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 08:14:13,550 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-30 08:14:13,551 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-30 08:14:13,551 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-30 08:14:13,551 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-30 08:14:13,551 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-30 08:14:13,551 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-30 08:14:13,551 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-30 08:14:13,551 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-30 08:14:13,552 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-30 08:14:13,552 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-30 08:14:13,552 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-30 08:14:13,552 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-30 08:14:13,552 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-30 08:14:13,552 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-30 08:14:13,552 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-30 08:14:13,552 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-30 08:14:13,553 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-30 08:14:13,554 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-30 08:14:13,554 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-30 08:14:13,554 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-30 08:14:13,554 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-30 08:14:13,554 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 08:14:13,554 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-30 08:14:13,555 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 08:14:13,555 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-30 08:14:13,617 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-30 08:14:13,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 448 places, 500 transitions, 1027 flow [2023-11-30 08:14:13,833 INFO L124 PetriNetUnfolderBase]: 119/1003 cut-off events. [2023-11-30 08:14:13,834 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-30 08:14:13,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 1003 events. 119/1003 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4867 event pairs, 1 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 700. Up to 16 conditions per place. [2023-11-30 08:14:13,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 448 places, 500 transitions, 1027 flow [2023-11-30 08:14:14,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 448 places, 500 transitions, 1027 flow [2023-11-30 08:14:14,065 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 08:14:14,066 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;@3895140e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 08:14:14,066 INFO L363 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-30 08:14:14,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 08:14:14,070 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-11-30 08:14:14,070 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 08:14:14,070 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:14:14,070 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] [2023-11-30 08:14:14,070 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-30 08:14:14,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:14:14,071 INFO L85 PathProgramCache]: Analyzing trace with hash 189480853, now seen corresponding path program 1 times [2023-11-30 08:14:14,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:14:14,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516765252] [2023-11-30 08:14:14,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:14:14,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:14:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:14:14,132 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 08:14:14,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:14:14,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516765252] [2023-11-30 08:14:14,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516765252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:14:14,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:14:14,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 08:14:14,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943693528] [2023-11-30 08:14:14,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:14:14,134 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 08:14:14,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:14:14,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 08:14:14,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 08:14:14,136 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 385 out of 500 [2023-11-30 08:14:14,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 500 transitions, 1027 flow. Second operand has 4 states, 4 states have (on average 386.75) internal successors, (1547), 4 states have internal predecessors, (1547), 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 08:14:14,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:14:14,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 385 of 500 [2023-11-30 08:14:14,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:14:59,494 INFO L124 PetriNetUnfolderBase]: 91808/279200 cut-off events. [2023-11-30 08:14:59,495 INFO L125 PetriNetUnfolderBase]: For 5663/5663 co-relation queries the response was YES. [2023-11-30 08:15:02,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403064 conditions, 279200 events. 91808/279200 cut-off events. For 5663/5663 co-relation queries the response was YES. Maximal size of possible extension queue 4994. Compared 4414549 event pairs, 88561 based on Foata normal form. 94461/347453 useless extension candidates. Maximal degree in co-relation 30618. Up to 122811 conditions per place. [2023-11-30 08:15:03,467 INFO L140 encePairwiseOnDemand]: 442/500 looper letters, 93 selfloop transitions, 4 changer transitions 0/474 dead transitions. [2023-11-30 08:15:03,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 474 transitions, 1169 flow [2023-11-30 08:15:03,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 08:15:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 08:15:03,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2113 transitions. [2023-11-30 08:15:03,471 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8452 [2023-11-30 08:15:03,472 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2113 transitions. [2023-11-30 08:15:03,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2113 transitions. [2023-11-30 08:15:03,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:15:03,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2113 transitions. [2023-11-30 08:15:03,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 422.6) internal successors, (2113), 5 states have internal predecessors, (2113), 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 08:15:03,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 500.0) internal successors, (3000), 6 states have internal predecessors, (3000), 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 08:15:03,481 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 500.0) internal successors, (3000), 6 states have internal predecessors, (3000), 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 08:15:03,481 INFO L307 CegarLoopForPetriNet]: 448 programPoint places, -8 predicate places. [2023-11-30 08:15:03,482 INFO L500 AbstractCegarLoop]: Abstraction has has 440 places, 474 transitions, 1169 flow [2023-11-30 08:15:03,482 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 386.75) internal successors, (1547), 4 states have internal predecessors, (1547), 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 08:15:03,482 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:15:03,483 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:15:03,483 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 08:15:03,483 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-30 08:15:03,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:15:03,483 INFO L85 PathProgramCache]: Analyzing trace with hash -987739494, now seen corresponding path program 1 times [2023-11-30 08:15:03,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:15:03,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757458461] [2023-11-30 08:15:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:15:03,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:15:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:15:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:15:03,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:15:03,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757458461] [2023-11-30 08:15:03,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757458461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 08:15:03,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324151568] [2023-11-30 08:15:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:15:03,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 08:15:03,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 08:15:03,598 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) [2023-11-30 08:15:03,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-30 08:15:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:15:03,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 08:15:03,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 08:15:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:15:03,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 08:15:03,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324151568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:15:03,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 08:15:03,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 08:15:03,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733846004] [2023-11-30 08:15:03,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:15:03,793 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 08:15:03,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:15:03,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 08:15:03,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 08:15:03,796 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 385 out of 500 [2023-11-30 08:15:03,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 474 transitions, 1169 flow. Second operand has 6 states, 6 states have (on average 387.5) internal successors, (2325), 6 states have internal predecessors, (2325), 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 08:15:03,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:15:03,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 385 of 500 [2023-11-30 08:15:03,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:15:42,314 INFO L124 PetriNetUnfolderBase]: 86884/248853 cut-off events. [2023-11-30 08:15:42,314 INFO L125 PetriNetUnfolderBase]: For 32584/92954 co-relation queries the response was YES. [2023-11-30 08:15:44,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485305 conditions, 248853 events. 86884/248853 cut-off events. For 32584/92954 co-relation queries the response was YES. Maximal size of possible extension queue 4798. Compared 3797466 event pairs, 41099 based on Foata normal form. 70/228066 useless extension candidates. Maximal degree in co-relation 35636. Up to 117640 conditions per place. [2023-11-30 08:15:46,639 INFO L140 encePairwiseOnDemand]: 494/500 looper letters, 149 selfloop transitions, 7 changer transitions 0/533 dead transitions. [2023-11-30 08:15:46,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 533 transitions, 1717 flow [2023-11-30 08:15:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 08:15:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 08:15:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2852 transitions. [2023-11-30 08:15:46,651 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8148571428571428 [2023-11-30 08:15:46,651 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2852 transitions. [2023-11-30 08:15:46,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2852 transitions. [2023-11-30 08:15:46,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:15:46,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2852 transitions. [2023-11-30 08:15:46,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 407.42857142857144) internal successors, (2852), 7 states have internal predecessors, (2852), 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 08:15:46,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 500.0) internal successors, (4000), 8 states have internal predecessors, (4000), 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 08:15:46,686 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 500.0) internal successors, (4000), 8 states have internal predecessors, (4000), 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 08:15:46,687 INFO L307 CegarLoopForPetriNet]: 448 programPoint places, -3 predicate places. [2023-11-30 08:15:46,687 INFO L500 AbstractCegarLoop]: Abstraction has has 445 places, 533 transitions, 1717 flow [2023-11-30 08:15:46,688 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 387.5) internal successors, (2325), 6 states have internal predecessors, (2325), 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 08:15:46,688 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:15:46,688 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:15:46,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-30 08:15:46,908 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-30 08:15:46,908 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-30 08:15:46,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:15:46,909 INFO L85 PathProgramCache]: Analyzing trace with hash -555151599, now seen corresponding path program 1 times [2023-11-30 08:15:46,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:15:46,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471072215] [2023-11-30 08:15:46,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:15:46,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:15:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:15:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 08:15:47,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:15:47,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471072215] [2023-11-30 08:15:47,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471072215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:15:47,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:15:47,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 08:15:47,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461899436] [2023-11-30 08:15:47,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:15:47,028 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 08:15:47,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:15:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 08:15:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 08:15:47,031 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 385 out of 500 [2023-11-30 08:15:47,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 533 transitions, 1717 flow. Second operand has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 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 08:15:47,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:15:47,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 385 of 500 [2023-11-30 08:15:47,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:16:46,605 INFO L124 PetriNetUnfolderBase]: 86800/273616 cut-off events. [2023-11-30 08:16:46,605 INFO L125 PetriNetUnfolderBase]: For 91009/155601 co-relation queries the response was YES. [2023-11-30 08:16:49,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620189 conditions, 273616 events. 86800/273616 cut-off events. For 91009/155601 co-relation queries the response was YES. Maximal size of possible extension queue 5058. Compared 4370822 event pairs, 34434 based on Foata normal form. 1459/251509 useless extension candidates. Maximal degree in co-relation 104453. Up to 115102 conditions per place. [2023-11-30 08:16:51,249 INFO L140 encePairwiseOnDemand]: 494/500 looper letters, 207 selfloop transitions, 8 changer transitions 0/592 dead transitions. [2023-11-30 08:16:51,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 592 transitions, 2501 flow [2023-11-30 08:16:51,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 08:16:51,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 08:16:51,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2075 transitions. [2023-11-30 08:16:51,254 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.83 [2023-11-30 08:16:51,254 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2075 transitions. [2023-11-30 08:16:51,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2075 transitions. [2023-11-30 08:16:51,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:16:51,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2075 transitions. [2023-11-30 08:16:51,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 415.0) internal successors, (2075), 5 states have internal predecessors, (2075), 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 08:16:51,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 500.0) internal successors, (3000), 6 states have internal predecessors, (3000), 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 08:16:51,263 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 500.0) internal successors, (3000), 6 states have internal predecessors, (3000), 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 08:16:51,264 INFO L307 CegarLoopForPetriNet]: 448 programPoint places, 0 predicate places. [2023-11-30 08:16:51,264 INFO L500 AbstractCegarLoop]: Abstraction has has 448 places, 592 transitions, 2501 flow [2023-11-30 08:16:51,264 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 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 08:16:51,264 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:16:51,265 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:16:51,265 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-30 08:16:51,265 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-30 08:16:51,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:16:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash -403748228, now seen corresponding path program 1 times [2023-11-30 08:16:51,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:16:51,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846321836] [2023-11-30 08:16:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:16:51,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:16:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 08:16:51,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 08:16:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 08:16:51,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 08:16:51,320 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 08:16:51,320 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-30 08:16:51,320 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-30 08:16:51,320 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-30 08:16:51,321 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-30 08:16:51,321 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-30 08:16:51,321 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-30 08:16:51,321 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-30 08:16:51,322 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-30 08:16:51,322 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-30 08:16:51,323 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-30 08:16:51,323 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-30 08:16:51,323 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-30 08:16:51,323 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-11-30 08:16:51,323 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-11-30 08:16:51,323 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-11-30 08:16:51,323 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-11-30 08:16:51,323 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-11-30 08:16:51,323 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-30 08:16:51,324 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-30 08:16:51,324 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-30 08:16:51,324 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-30 08:16:51,324 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-30 08:16:51,324 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-30 08:16:51,324 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-30 08:16:51,324 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-30 08:16:51,324 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-30 08:16:51,324 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-30 08:16:51,325 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 08:16:51,325 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-30 08:16:51,383 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-30 08:16:51,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 538 places, 602 transitions, 1244 flow [2023-11-30 08:16:51,632 INFO L124 PetriNetUnfolderBase]: 169/1402 cut-off events. [2023-11-30 08:16:51,643 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-30 08:16:51,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 1402 events. 169/1402 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7415 event pairs, 6 based on Foata normal form. 0/1159 useless extension candidates. Maximal degree in co-relation 1023. Up to 32 conditions per place. [2023-11-30 08:16:51,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 538 places, 602 transitions, 1244 flow [2023-11-30 08:16:51,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 538 places, 602 transitions, 1244 flow [2023-11-30 08:16:51,732 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 08:16:51,735 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;@3895140e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 08:16:51,736 INFO L363 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-30 08:16:51,739 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 08:16:51,740 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-11-30 08:16:51,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 08:16:51,740 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:16:51,740 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] [2023-11-30 08:16:51,740 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-30 08:16:51,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:16:51,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1913435475, now seen corresponding path program 1 times [2023-11-30 08:16:51,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:16:51,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129161875] [2023-11-30 08:16:51,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:16:51,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:16:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:16:51,790 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 08:16:51,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:16:51,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129161875] [2023-11-30 08:16:51,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129161875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:16:51,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:16:51,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 08:16:51,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106190139] [2023-11-30 08:16:51,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:16:51,791 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 08:16:51,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:16:51,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 08:16:51,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 08:16:51,794 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 602 [2023-11-30 08:16:51,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 602 transitions, 1244 flow. Second operand has 4 states, 4 states have (on average 463.75) internal successors, (1855), 4 states have internal predecessors, (1855), 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 08:16:51,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:16:51,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 602 [2023-11-30 08:16:51,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand