/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/weaver/popl20-more-buffer-series2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 09:40:09,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 09:40:09,801 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 09:40:09,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 09:40:09,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 09:40:09,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 09:40:09,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 09:40:09,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 09:40:09,832 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 09:40:09,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 09:40:09,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 09:40:09,836 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 09:40:09,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 09:40:09,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 09:40:09,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 09:40:09,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 09:40:09,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 09:40:09,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 09:40:09,838 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 09:40:09,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 09:40:09,839 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 09:40:09,839 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 09:40:09,839 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 09:40:09,840 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 09:40:09,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 09:40:09,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 09:40:09,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 09:40:09,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 09:40:09,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 09:40:09,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 09:40:09,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 09:40:09,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 09:40:09,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 09:40:09,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 09:40:10,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 09:40:10,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 09:40:10,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 09:40:10,048 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 09:40:10,049 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 09:40:10,049 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-11-30 09:40:11,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 09:40:11,380 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 09:40:11,381 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-11-30 09:40:11,391 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4363bc4e/2d6037889b404ee8bfdfb11d0ad81e3d/FLAGf9bcd8c23 [2023-11-30 09:40:11,409 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4363bc4e/2d6037889b404ee8bfdfb11d0ad81e3d [2023-11-30 09:40:11,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 09:40:11,412 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 09:40:11,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 09:40:11,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 09:40:11,418 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 09:40:11,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a6941e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11, skipping insertion in model container [2023-11-30 09:40:11,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,453 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 09:40:11,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 09:40:11,598 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 09:40:11,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 09:40:11,635 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 09:40:11,636 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 09:40:11,641 INFO L206 MainTranslator]: Completed translation [2023-11-30 09:40:11,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11 WrapperNode [2023-11-30 09:40:11,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 09:40:11,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 09:40:11,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 09:40:11,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 09:40:11,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,690 INFO L138 Inliner]: procedures = 27, calls = 84, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 410 [2023-11-30 09:40:11,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 09:40:11,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 09:40:11,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 09:40:11,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 09:40:11,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,723 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 09:40:11,729 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 09:40:11,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 09:40:11,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 09:40:11,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11" (1/1) ... [2023-11-30 09:40:11,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 09:40:11,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:40:11,758 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 09:40:11,776 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 09:40:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 09:40:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 09:40:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 09:40:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 09:40:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 09:40:11,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 09:40:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 09:40:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 09:40:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-30 09:40:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-30 09:40:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-30 09:40:11,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-30 09:40:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 09:40:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 09:40:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 09:40:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 09:40:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 09:40:11,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 09:40:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 09:40:11,804 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 09:40:11,909 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 09:40:11,911 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 09:40:12,394 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 09:40:12,783 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 09:40:12,783 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-30 09:40:12,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 09:40:12 BoogieIcfgContainer [2023-11-30 09:40:12,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 09:40:12,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 09:40:12,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 09:40:12,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 09:40:12,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 09:40:11" (1/3) ... [2023-11-30 09:40:12,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dde3a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 09:40:12, skipping insertion in model container [2023-11-30 09:40:12,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:40:11" (2/3) ... [2023-11-30 09:40:12,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dde3a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 09:40:12, skipping insertion in model container [2023-11-30 09:40:12,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 09:40:12" (3/3) ... [2023-11-30 09:40:12,792 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-11-30 09:40:12,808 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 09:40:12,809 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-30 09:40:12,809 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 09:40:12,977 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-30 09:40:13,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 316 transitions, 660 flow [2023-11-30 09:40:13,200 INFO L124 PetriNetUnfolderBase]: 22/312 cut-off events. [2023-11-30 09:40:13,200 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-30 09:40:13,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 312 events. 22/312 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 321 event pairs, 0 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 262. Up to 2 conditions per place. [2023-11-30 09:40:13,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 316 transitions, 660 flow [2023-11-30 09:40:13,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 286 transitions, 593 flow [2023-11-30 09:40:13,227 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 09:40:13,234 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;@5f79c518, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 09:40:13,234 INFO L363 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-11-30 09:40:13,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 09:40:13,252 INFO L124 PetriNetUnfolderBase]: 3/85 cut-off events. [2023-11-30 09:40:13,252 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 09:40:13,252 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:40:13,253 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:40:13,254 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:40:13,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:40:13,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1183056386, now seen corresponding path program 1 times [2023-11-30 09:40:13,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:40:13,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471607238] [2023-11-30 09:40:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:13,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:40:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:13,683 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 09:40:13,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:40:13,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471607238] [2023-11-30 09:40:13,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471607238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:40:13,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:40:13,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 09:40:13,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822485937] [2023-11-30 09:40:13,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:40:13,693 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 09:40:13,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:40:13,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 09:40:13,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 09:40:13,722 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 316 [2023-11-30 09:40:13,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 286 transitions, 593 flow. Second operand has 4 states, 4 states have (on average 221.5) internal successors, (886), 4 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:40:13,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:40:13,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 316 [2023-11-30 09:40:13,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:40:16,471 INFO L124 PetriNetUnfolderBase]: 6647/9979 cut-off events. [2023-11-30 09:40:16,471 INFO L125 PetriNetUnfolderBase]: For 1971/1971 co-relation queries the response was YES. [2023-11-30 09:40:16,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19068 conditions, 9979 events. 6647/9979 cut-off events. For 1971/1971 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 57865 event pairs, 3297 based on Foata normal form. 1695/5779 useless extension candidates. Maximal degree in co-relation 18471. Up to 8128 conditions per place. [2023-11-30 09:40:16,592 INFO L140 encePairwiseOnDemand]: 270/316 looper letters, 80 selfloop transitions, 15 changer transitions 7/288 dead transitions. [2023-11-30 09:40:16,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 288 transitions, 787 flow [2023-11-30 09:40:16,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 09:40:16,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 09:40:16,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1229 transitions. [2023-11-30 09:40:16,611 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7778481012658228 [2023-11-30 09:40:16,611 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1229 transitions. [2023-11-30 09:40:16,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1229 transitions. [2023-11-30 09:40:16,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:40:16,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1229 transitions. [2023-11-30 09:40:16,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.8) internal successors, (1229), 5 states have internal predecessors, (1229), 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 09:40:16,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 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 09:40:16,633 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 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 09:40:16,637 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, -7 predicate places. [2023-11-30 09:40:16,637 INFO L500 AbstractCegarLoop]: Abstraction has has 271 places, 288 transitions, 787 flow [2023-11-30 09:40:16,638 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 221.5) internal successors, (886), 4 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:40:16,638 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:40:16,639 INFO L232 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:40:16,639 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 09:40:16,640 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:40:16,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:40:16,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1024903025, now seen corresponding path program 1 times [2023-11-30 09:40:16,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:40:16,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421093559] [2023-11-30 09:40:16,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:16,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:40:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:40:16,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:40:16,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421093559] [2023-11-30 09:40:16,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421093559] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:40:16,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160415112] [2023-11-30 09:40:16,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:16,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:40:16,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:40:16,794 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 09:40:16,816 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 09:40:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:16,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:40:16,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:40:16,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:40:16,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:40:16,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160415112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:40:16,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:40:16,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 09:40:16,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977381960] [2023-11-30 09:40:16,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:40:16,985 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 09:40:16,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:40:16,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 09:40:16,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 09:40:16,988 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 316 [2023-11-30 09:40:16,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 288 transitions, 787 flow. Second operand has 6 states, 6 states have (on average 222.16666666666666) internal successors, (1333), 6 states have internal predecessors, (1333), 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 09:40:16,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:40:16,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 316 [2023-11-30 09:40:16,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:40:19,199 INFO L124 PetriNetUnfolderBase]: 6647/9976 cut-off events. [2023-11-30 09:40:19,199 INFO L125 PetriNetUnfolderBase]: For 2596/2846 co-relation queries the response was YES. [2023-11-30 09:40:19,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27211 conditions, 9976 events. 6647/9976 cut-off events. For 2596/2846 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 57859 event pairs, 3297 based on Foata normal form. 0/4084 useless extension candidates. Maximal degree in co-relation 26459. Up to 8125 conditions per place. [2023-11-30 09:40:19,286 INFO L140 encePairwiseOnDemand]: 298/316 looper letters, 68 selfloop transitions, 24 changer transitions 7/285 dead transitions. [2023-11-30 09:40:19,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 285 transitions, 959 flow [2023-11-30 09:40:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 09:40:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 09:40:19,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1635 transitions. [2023-11-30 09:40:19,291 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7391500904159132 [2023-11-30 09:40:19,291 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1635 transitions. [2023-11-30 09:40:19,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1635 transitions. [2023-11-30 09:40:19,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:40:19,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1635 transitions. [2023-11-30 09:40:19,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 233.57142857142858) internal successors, (1635), 7 states have internal predecessors, (1635), 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 09:40:19,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 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 09:40:19,301 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 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 09:40:19,302 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, -4 predicate places. [2023-11-30 09:40:19,302 INFO L500 AbstractCegarLoop]: Abstraction has has 274 places, 285 transitions, 959 flow [2023-11-30 09:40:19,303 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.16666666666666) internal successors, (1333), 6 states have internal predecessors, (1333), 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 09:40:19,303 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:40:19,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:40:19,313 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 09:40:19,509 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:40:19,510 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:40:19,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:40:19,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1707223856, now seen corresponding path program 1 times [2023-11-30 09:40:19,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:40:19,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301742487] [2023-11-30 09:40:19,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:19,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:40:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:40:19,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:40:19,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301742487] [2023-11-30 09:40:19,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301742487] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:40:19,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47790143] [2023-11-30 09:40:19,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:19,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:40:19,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:40:19,641 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 09:40:19,669 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 09:40:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:19,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:40:19,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:40:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:40:19,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:40:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:40:19,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47790143] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:40:19,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:40:19,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-30 09:40:19,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063407538] [2023-11-30 09:40:19,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:40:19,883 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-30 09:40:19,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:40:19,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-30 09:40:19,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-30 09:40:19,887 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 316 [2023-11-30 09:40:19,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 285 transitions, 959 flow. Second operand has 12 states, 12 states have (on average 222.83333333333334) internal successors, (2674), 12 states have internal predecessors, (2674), 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 09:40:19,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:40:19,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 316 [2023-11-30 09:40:19,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:40:22,192 INFO L124 PetriNetUnfolderBase]: 6656/10081 cut-off events. [2023-11-30 09:40:22,192 INFO L125 PetriNetUnfolderBase]: For 3657/4157 co-relation queries the response was YES. [2023-11-30 09:40:22,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35699 conditions, 10081 events. 6656/10081 cut-off events. For 3657/4157 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 58568 event pairs, 3297 based on Foata normal form. 0/4180 useless extension candidates. Maximal degree in co-relation 34447. Up to 8203 conditions per place. [2023-11-30 09:40:22,283 INFO L140 encePairwiseOnDemand]: 295/316 looper letters, 116 selfloop transitions, 54 changer transitions 7/363 dead transitions. [2023-11-30 09:40:22,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 363 transitions, 1767 flow [2023-11-30 09:40:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-30 09:40:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-30 09:40:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3259 transitions. [2023-11-30 09:40:22,290 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7366636528028933 [2023-11-30 09:40:22,291 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3259 transitions. [2023-11-30 09:40:22,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3259 transitions. [2023-11-30 09:40:22,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:40:22,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3259 transitions. [2023-11-30 09:40:22,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 232.78571428571428) internal successors, (3259), 14 states have internal predecessors, (3259), 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 09:40:22,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 316.0) internal successors, (4740), 15 states have internal predecessors, (4740), 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 09:40:22,308 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 316.0) internal successors, (4740), 15 states have internal predecessors, (4740), 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 09:40:22,309 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, 9 predicate places. [2023-11-30 09:40:22,309 INFO L500 AbstractCegarLoop]: Abstraction has has 287 places, 363 transitions, 1767 flow [2023-11-30 09:40:22,310 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 222.83333333333334) internal successors, (2674), 12 states have internal predecessors, (2674), 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 09:40:22,310 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:40:22,310 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:40:22,319 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 09:40:22,519 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,SelfDestructingSolverStorable2 [2023-11-30 09:40:22,519 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:40:22,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:40:22,520 INFO L85 PathProgramCache]: Analyzing trace with hash 348487799, now seen corresponding path program 2 times [2023-11-30 09:40:22,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:40:22,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944363745] [2023-11-30 09:40:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:22,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:40:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:40:22,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:40:22,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944363745] [2023-11-30 09:40:22,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944363745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:40:22,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722452304] [2023-11-30 09:40:22,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:40:22,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:40:22,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:40:22,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:40:22,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-30 09:40:22,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 09:40:22,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:40:22,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-30 09:40:22,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:40:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-30 09:40:23,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:40:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-30 09:40:23,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722452304] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:40:23,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:40:23,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2023-11-30 09:40:23,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644873500] [2023-11-30 09:40:23,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:40:23,159 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-30 09:40:23,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:40:23,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-30 09:40:23,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-30 09:40:23,163 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 316 [2023-11-30 09:40:23,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 363 transitions, 1767 flow. Second operand has 18 states, 18 states have (on average 198.77777777777777) internal successors, (3578), 18 states have internal predecessors, (3578), 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 09:40:23,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:40:23,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 316 [2023-11-30 09:40:23,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:40:25,717 INFO L124 PetriNetUnfolderBase]: 5668/8857 cut-off events. [2023-11-30 09:40:25,717 INFO L125 PetriNetUnfolderBase]: For 4717/5389 co-relation queries the response was YES. [2023-11-30 09:40:25,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38018 conditions, 8857 events. 5668/8857 cut-off events. For 4717/5389 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 52029 event pairs, 2803 based on Foata normal form. 0/3865 useless extension candidates. Maximal degree in co-relation 36234. Up to 7057 conditions per place. [2023-11-30 09:40:25,827 INFO L140 encePairwiseOnDemand]: 283/316 looper letters, 144 selfloop transitions, 99 changer transitions 7/412 dead transitions. [2023-11-30 09:40:25,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 412 transitions, 2645 flow [2023-11-30 09:40:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-30 09:40:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-11-30 09:40:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 9805 transitions. [2023-11-30 09:40:25,850 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6332343063807802 [2023-11-30 09:40:25,850 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 9805 transitions. [2023-11-30 09:40:25,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 9805 transitions. [2023-11-30 09:40:25,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:40:25,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 9805 transitions. [2023-11-30 09:40:25,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 200.10204081632654) internal successors, (9805), 49 states have internal predecessors, (9805), 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 09:40:25,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 316.0) internal successors, (15800), 50 states have internal predecessors, (15800), 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 09:40:25,912 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 316.0) internal successors, (15800), 50 states have internal predecessors, (15800), 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 09:40:25,916 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, 55 predicate places. [2023-11-30 09:40:25,916 INFO L500 AbstractCegarLoop]: Abstraction has has 333 places, 412 transitions, 2645 flow [2023-11-30 09:40:25,917 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 198.77777777777777) internal successors, (3578), 18 states have internal predecessors, (3578), 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 09:40:25,917 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:40:25,917 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:25,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-30 09:40:26,118 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:40:26,118 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:40:26,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:40:26,119 INFO L85 PathProgramCache]: Analyzing trace with hash 138607111, now seen corresponding path program 1 times [2023-11-30 09:40:26,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:40:26,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239021260] [2023-11-30 09:40:26,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:26,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:40:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:26,237 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 09:40:26,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:40:26,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239021260] [2023-11-30 09:40:26,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239021260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:40:26,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:40:26,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 09:40:26,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803999960] [2023-11-30 09:40:26,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:40:26,243 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 09:40:26,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:40:26,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 09:40:26,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 09:40:26,245 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 316 [2023-11-30 09:40:26,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 412 transitions, 2645 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 09:40:26,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:40:26,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 316 [2023-11-30 09:40:26,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:40:28,381 INFO L124 PetriNetUnfolderBase]: 7908/13122 cut-off events. [2023-11-30 09:40:28,382 INFO L125 PetriNetUnfolderBase]: For 19079/19967 co-relation queries the response was YES. [2023-11-30 09:40:28,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61262 conditions, 13122 events. 7908/13122 cut-off events. For 19079/19967 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 98909 event pairs, 1859 based on Foata normal form. 0/6621 useless extension candidates. Maximal degree in co-relation 59196. Up to 9154 conditions per place. [2023-11-30 09:40:28,486 INFO L140 encePairwiseOnDemand]: 312/316 looper letters, 52 selfloop transitions, 2 changer transitions 7/436 dead transitions. [2023-11-30 09:40:28,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 436 transitions, 2995 flow [2023-11-30 09:40:28,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 09:40:28,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 09:40:28,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 827 transitions. [2023-11-30 09:40:28,489 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8723628691983122 [2023-11-30 09:40:28,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 827 transitions. [2023-11-30 09:40:28,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 827 transitions. [2023-11-30 09:40:28,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:40:28,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 827 transitions. [2023-11-30 09:40:28,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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 09:40:28,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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 09:40:28,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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 09:40:28,493 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, 57 predicate places. [2023-11-30 09:40:28,493 INFO L500 AbstractCegarLoop]: Abstraction has has 335 places, 436 transitions, 2995 flow [2023-11-30 09:40:28,493 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 09:40:28,493 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:40:28,494 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:28,494 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 09:40:28,494 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:40:28,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:40:28,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1782235453, now seen corresponding path program 1 times [2023-11-30 09:40:28,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:40:28,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839423797] [2023-11-30 09:40:28,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:28,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:40:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:40:28,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:40:28,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839423797] [2023-11-30 09:40:28,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839423797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:40:28,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:40:28,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 09:40:28,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629507100] [2023-11-30 09:40:28,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:40:28,627 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 09:40:28,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:40:28,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 09:40:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-30 09:40:28,629 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 316 [2023-11-30 09:40:28,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 436 transitions, 2995 flow. Second operand has 6 states, 6 states have (on average 221.33333333333334) internal successors, (1328), 6 states have internal predecessors, (1328), 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 09:40:28,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:40:28,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 316 [2023-11-30 09:40:28,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:40:31,518 INFO L124 PetriNetUnfolderBase]: 8705/15705 cut-off events. [2023-11-30 09:40:31,518 INFO L125 PetriNetUnfolderBase]: For 25486/27006 co-relation queries the response was YES. [2023-11-30 09:40:31,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78293 conditions, 15705 events. 8705/15705 cut-off events. For 25486/27006 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 130087 event pairs, 3311 based on Foata normal form. 208/8787 useless extension candidates. Maximal degree in co-relation 68772. Up to 9985 conditions per place. [2023-11-30 09:40:31,671 INFO L140 encePairwiseOnDemand]: 300/316 looper letters, 312 selfloop transitions, 12 changer transitions 7/559 dead transitions. [2023-11-30 09:40:31,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 559 transitions, 4850 flow [2023-11-30 09:40:31,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 09:40:31,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 09:40:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2068 transitions. [2023-11-30 09:40:31,675 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7271448663853727 [2023-11-30 09:40:31,676 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2068 transitions. [2023-11-30 09:40:31,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2068 transitions. [2023-11-30 09:40:31,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:40:31,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2068 transitions. [2023-11-30 09:40:31,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 229.77777777777777) internal successors, (2068), 9 states have internal predecessors, (2068), 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 09:40:31,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 316.0) internal successors, (3160), 10 states have internal predecessors, (3160), 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 09:40:31,684 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 316.0) internal successors, (3160), 10 states have internal predecessors, (3160), 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 09:40:31,685 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, 65 predicate places. [2023-11-30 09:40:31,685 INFO L500 AbstractCegarLoop]: Abstraction has has 343 places, 559 transitions, 4850 flow [2023-11-30 09:40:31,685 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 221.33333333333334) internal successors, (1328), 6 states have internal predecessors, (1328), 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 09:40:31,685 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:40:31,686 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:31,686 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 09:40:31,686 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:40:31,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:40:31,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1310854889, now seen corresponding path program 1 times [2023-11-30 09:40:31,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:40:31,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414187605] [2023-11-30 09:40:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:31,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:40:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:31,895 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 09:40:31,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:40:31,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414187605] [2023-11-30 09:40:31,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414187605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:40:31,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:40:31,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 09:40:31,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674748282] [2023-11-30 09:40:31,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:40:31,896 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 09:40:31,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:40:31,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 09:40:31,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 09:40:31,898 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 316 [2023-11-30 09:40:31,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 559 transitions, 4850 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 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 09:40:31,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:40:31,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 316 [2023-11-30 09:40:31,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:40:36,454 INFO L124 PetriNetUnfolderBase]: 14100/26663 cut-off events. [2023-11-30 09:40:36,454 INFO L125 PetriNetUnfolderBase]: For 100277/102537 co-relation queries the response was YES. [2023-11-30 09:40:36,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139023 conditions, 26663 events. 14100/26663 cut-off events. For 100277/102537 co-relation queries the response was YES. Maximal size of possible extension queue 1522. Compared 248408 event pairs, 3084 based on Foata normal form. 36/15071 useless extension candidates. Maximal degree in co-relation 118480. Up to 15215 conditions per place. [2023-11-30 09:40:36,692 INFO L140 encePairwiseOnDemand]: 312/316 looper letters, 120 selfloop transitions, 4 changer transitions 7/614 dead transitions. [2023-11-30 09:40:36,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 614 transitions, 5889 flow [2023-11-30 09:40:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 09:40:36,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 09:40:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2023-11-30 09:40:36,694 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8713080168776371 [2023-11-30 09:40:36,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2023-11-30 09:40:36,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2023-11-30 09:40:36,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:40:36,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2023-11-30 09:40:36,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 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 09:40:36,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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 09:40:36,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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 09:40:36,699 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, 67 predicate places. [2023-11-30 09:40:36,700 INFO L500 AbstractCegarLoop]: Abstraction has has 345 places, 614 transitions, 5889 flow [2023-11-30 09:40:36,700 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 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 09:40:36,700 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:40:36,702 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:36,702 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 09:40:36,702 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:40:36,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:40:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1310854893, now seen corresponding path program 1 times [2023-11-30 09:40:36,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:40:36,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839406706] [2023-11-30 09:40:36,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:36,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:40:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:36,843 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 09:40:36,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:40:36,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839406706] [2023-11-30 09:40:36,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839406706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:40:36,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:40:36,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 09:40:36,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004844422] [2023-11-30 09:40:36,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:40:36,845 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 09:40:36,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:40:36,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 09:40:36,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-30 09:40:36,846 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 316 [2023-11-30 09:40:36,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 614 transitions, 5889 flow. Second operand has 6 states, 6 states have (on average 221.33333333333334) internal successors, (1328), 6 states have internal predecessors, (1328), 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 09:40:36,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:40:36,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 316 [2023-11-30 09:40:36,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:40:42,418 INFO L124 PetriNetUnfolderBase]: 14744/28841 cut-off events. [2023-11-30 09:40:42,418 INFO L125 PetriNetUnfolderBase]: For 149322/153034 co-relation queries the response was YES. [2023-11-30 09:40:42,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163094 conditions, 28841 events. 14744/28841 cut-off events. For 149322/153034 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 274516 event pairs, 3397 based on Foata normal form. 353/17022 useless extension candidates. Maximal degree in co-relation 133942. Up to 15982 conditions per place. [2023-11-30 09:40:42,736 INFO L140 encePairwiseOnDemand]: 298/316 looper letters, 469 selfloop transitions, 24 changer transitions 33/756 dead transitions. [2023-11-30 09:40:42,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 756 transitions, 8743 flow [2023-11-30 09:40:42,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 09:40:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 09:40:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2053 transitions. [2023-11-30 09:40:42,741 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7218706047819972 [2023-11-30 09:40:42,741 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2053 transitions. [2023-11-30 09:40:42,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2053 transitions. [2023-11-30 09:40:42,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:40:42,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2053 transitions. [2023-11-30 09:40:42,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 228.11111111111111) internal successors, (2053), 9 states have internal predecessors, (2053), 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 09:40:42,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 316.0) internal successors, (3160), 10 states have internal predecessors, (3160), 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 09:40:42,749 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 316.0) internal successors, (3160), 10 states have internal predecessors, (3160), 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 09:40:42,750 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, 75 predicate places. [2023-11-30 09:40:42,750 INFO L500 AbstractCegarLoop]: Abstraction has has 353 places, 756 transitions, 8743 flow [2023-11-30 09:40:42,750 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 221.33333333333334) internal successors, (1328), 6 states have internal predecessors, (1328), 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 09:40:42,750 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:40:42,750 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:42,751 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 09:40:42,751 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:40:42,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:40:42,751 INFO L85 PathProgramCache]: Analyzing trace with hash -601653520, now seen corresponding path program 1 times [2023-11-30 09:40:42,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:40:42,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478150407] [2023-11-30 09:40:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:42,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:40:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:40:43,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:40:43,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478150407] [2023-11-30 09:40:43,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478150407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:40:43,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958861173] [2023-11-30 09:40:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:43,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:40:43,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:40:43,004 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:40:43,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-30 09:40:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:43,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-30 09:40:43,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:40:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:40:43,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:40:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:40:43,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958861173] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:40:43,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:40:43,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-30 09:40:43,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76083908] [2023-11-30 09:40:43,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:40:43,577 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-30 09:40:43,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:40:43,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-30 09:40:43,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-30 09:40:43,582 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 316 [2023-11-30 09:40:43,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 756 transitions, 8743 flow. Second operand has 19 states, 19 states have (on average 199.94736842105263) internal successors, (3799), 19 states have internal predecessors, (3799), 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 09:40:43,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:40:43,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 316 [2023-11-30 09:40:43,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:40:54,125 INFO L124 PetriNetUnfolderBase]: 26280/51062 cut-off events. [2023-11-30 09:40:54,125 INFO L125 PetriNetUnfolderBase]: For 338072/355892 co-relation queries the response was YES. [2023-11-30 09:40:54,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319261 conditions, 51062 events. 26280/51062 cut-off events. For 338072/355892 co-relation queries the response was YES. Maximal size of possible extension queue 1969. Compared 515016 event pairs, 6961 based on Foata normal form. 1147/30016 useless extension candidates. Maximal degree in co-relation 130945. Up to 28283 conditions per place. [2023-11-30 09:40:54,927 INFO L140 encePairwiseOnDemand]: 291/316 looper letters, 783 selfloop transitions, 172 changer transitions 36/1155 dead transitions. [2023-11-30 09:40:54,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 1155 transitions, 16535 flow [2023-11-30 09:40:54,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-30 09:40:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-30 09:40:54,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4368 transitions. [2023-11-30 09:40:54,936 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6582278481012658 [2023-11-30 09:40:54,936 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4368 transitions. [2023-11-30 09:40:54,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4368 transitions. [2023-11-30 09:40:54,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:40:54,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4368 transitions. [2023-11-30 09:40:54,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 208.0) internal successors, (4368), 21 states have internal predecessors, (4368), 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 09:40:54,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 316.0) internal successors, (6952), 22 states have internal predecessors, (6952), 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 09:40:54,952 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 316.0) internal successors, (6952), 22 states have internal predecessors, (6952), 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 09:40:54,952 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, 95 predicate places. [2023-11-30 09:40:54,953 INFO L500 AbstractCegarLoop]: Abstraction has has 373 places, 1155 transitions, 16535 flow [2023-11-30 09:40:54,953 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 199.94736842105263) internal successors, (3799), 19 states have internal predecessors, (3799), 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 09:40:54,954 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:40:54,954 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:54,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-30 09:40:55,159 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:40:55,160 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:40:55,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:40:55,160 INFO L85 PathProgramCache]: Analyzing trace with hash 446189836, now seen corresponding path program 1 times [2023-11-30 09:40:55,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:40:55,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388241677] [2023-11-30 09:40:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:40:55,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:40:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:40:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:40:55,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:40:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388241677] [2023-11-30 09:40:55,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388241677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:40:55,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:40:55,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-30 09:40:55,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083791308] [2023-11-30 09:40:55,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:40:55,455 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-30 09:40:55,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:40:55,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-30 09:40:55,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-30 09:40:55,457 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 316 [2023-11-30 09:40:55,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 1155 transitions, 16535 flow. Second operand has 8 states, 8 states have (on average 208.75) internal successors, (1670), 8 states have internal predecessors, (1670), 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 09:40:55,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:40:55,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 316 [2023-11-30 09:40:55,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:41:15,222 INFO L124 PetriNetUnfolderBase]: 47240/80680 cut-off events. [2023-11-30 09:41:15,222 INFO L125 PetriNetUnfolderBase]: For 530723/583581 co-relation queries the response was YES. [2023-11-30 09:41:15,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554304 conditions, 80680 events. 47240/80680 cut-off events. For 530723/583581 co-relation queries the response was YES. Maximal size of possible extension queue 2719. Compared 756398 event pairs, 10586 based on Foata normal form. 171/50549 useless extension candidates. Maximal degree in co-relation 194109. Up to 41961 conditions per place. [2023-11-30 09:41:16,530 INFO L140 encePairwiseOnDemand]: 302/316 looper letters, 1089 selfloop transitions, 69 changer transitions 53/1509 dead transitions. [2023-11-30 09:41:16,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1509 transitions, 25637 flow [2023-11-30 09:41:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-30 09:41:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-30 09:41:16,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2408 transitions. [2023-11-30 09:41:16,534 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6927502876869965 [2023-11-30 09:41:16,534 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2408 transitions. [2023-11-30 09:41:16,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2408 transitions. [2023-11-30 09:41:16,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:41:16,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2408 transitions. [2023-11-30 09:41:16,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 218.9090909090909) internal successors, (2408), 11 states have internal predecessors, (2408), 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 09:41:16,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 316.0) internal successors, (3792), 12 states have internal predecessors, (3792), 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 09:41:16,540 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 316.0) internal successors, (3792), 12 states have internal predecessors, (3792), 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 09:41:16,541 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, 105 predicate places. [2023-11-30 09:41:16,541 INFO L500 AbstractCegarLoop]: Abstraction has has 383 places, 1509 transitions, 25637 flow [2023-11-30 09:41:16,541 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 208.75) internal successors, (1670), 8 states have internal predecessors, (1670), 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 09:41:16,541 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:41:16,542 INFO L232 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:41:16,542 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-30 09:41:16,542 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:41:16,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:41:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1538542051, now seen corresponding path program 1 times [2023-11-30 09:41:16,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:41:16,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680664457] [2023-11-30 09:41:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:41:16,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:41:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:41:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:41:16,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:41:16,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680664457] [2023-11-30 09:41:16,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680664457] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:41:16,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8204626] [2023-11-30 09:41:16,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:41:16,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:41:16,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:41:16,801 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:41:16,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-30 09:41:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:41:16,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-30 09:41:16,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:41:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:41:17,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:41:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:41:17,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8204626] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:41:17,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:41:17,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-11-30 09:41:17,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157582432] [2023-11-30 09:41:17,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:41:17,332 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-30 09:41:17,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:41:17,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-30 09:41:17,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2023-11-30 09:41:17,338 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 316 [2023-11-30 09:41:17,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 1509 transitions, 25637 flow. Second operand has 32 states, 32 states have (on average 223.40625) internal successors, (7149), 32 states have internal predecessors, (7149), 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 09:41:17,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:41:17,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 316 [2023-11-30 09:41:17,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:41:38,869 INFO L124 PetriNetUnfolderBase]: 47320/82612 cut-off events. [2023-11-30 09:41:38,869 INFO L125 PetriNetUnfolderBase]: For 648525/706718 co-relation queries the response was YES. [2023-11-30 09:41:39,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604076 conditions, 82612 events. 47320/82612 cut-off events. For 648525/706718 co-relation queries the response was YES. Maximal size of possible extension queue 2772. Compared 785211 event pairs, 10786 based on Foata normal form. 15/52215 useless extension candidates. Maximal degree in co-relation 210930. Up to 42686 conditions per place. [2023-11-30 09:41:40,000 INFO L140 encePairwiseOnDemand]: 296/316 looper letters, 1284 selfloop transitions, 521 changer transitions 69/2162 dead transitions. [2023-11-30 09:41:40,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 2162 transitions, 40101 flow [2023-11-30 09:41:40,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-30 09:41:40,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-30 09:41:40,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10134 transitions. [2023-11-30 09:41:40,006 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.72885500575374 [2023-11-30 09:41:40,006 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10134 transitions. [2023-11-30 09:41:40,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10134 transitions. [2023-11-30 09:41:40,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:41:40,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10134 transitions. [2023-11-30 09:41:40,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 230.3181818181818) internal successors, (10134), 44 states have internal predecessors, (10134), 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 09:41:40,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 316.0) internal successors, (14220), 45 states have internal predecessors, (14220), 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 09:41:40,030 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 316.0) internal successors, (14220), 45 states have internal predecessors, (14220), 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 09:41:40,031 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, 148 predicate places. [2023-11-30 09:41:40,031 INFO L500 AbstractCegarLoop]: Abstraction has has 426 places, 2162 transitions, 40101 flow [2023-11-30 09:41:40,033 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 223.40625) internal successors, (7149), 32 states have internal predecessors, (7149), 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 09:41:40,033 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:41:40,033 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:41:40,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-30 09:41:40,240 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-30 09:41:40,241 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:41:40,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:41:40,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1618784842, now seen corresponding path program 1 times [2023-11-30 09:41:40,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:41:40,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655994508] [2023-11-30 09:41:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:41:40,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:41:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:41:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:41:40,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:41:40,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655994508] [2023-11-30 09:41:40,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655994508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:41:40,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:41:40,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 09:41:40,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594059867] [2023-11-30 09:41:40,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:41:40,364 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 09:41:40,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:41:40,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 09:41:40,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 09:41:40,365 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 316 [2023-11-30 09:41:40,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 2162 transitions, 40101 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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 09:41:40,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:41:40,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 316 [2023-11-30 09:41:40,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:41:55,910 INFO L124 PetriNetUnfolderBase]: 30767/55081 cut-off events. [2023-11-30 09:41:55,910 INFO L125 PetriNetUnfolderBase]: For 556514/630705 co-relation queries the response was YES. [2023-11-30 09:41:56,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425376 conditions, 55081 events. 30767/55081 cut-off events. For 556514/630705 co-relation queries the response was YES. Maximal size of possible extension queue 1854. Compared 505079 event pairs, 7604 based on Foata normal form. 978/36245 useless extension candidates. Maximal degree in co-relation 155183. Up to 27600 conditions per place. [2023-11-30 09:41:56,694 INFO L140 encePairwiseOnDemand]: 309/316 looper letters, 424 selfloop transitions, 15 changer transitions 77/1995 dead transitions. [2023-11-30 09:41:56,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 1995 transitions, 37097 flow [2023-11-30 09:41:56,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 09:41:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 09:41:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2023-11-30 09:41:56,695 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8670886075949367 [2023-11-30 09:41:56,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2023-11-30 09:41:56,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2023-11-30 09:41:56,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:41:56,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2023-11-30 09:41:56,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 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 09:41:56,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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 09:41:56,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 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 09:41:56,698 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, 150 predicate places. [2023-11-30 09:41:56,698 INFO L500 AbstractCegarLoop]: Abstraction has has 428 places, 1995 transitions, 37097 flow [2023-11-30 09:41:56,698 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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 09:41:56,698 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:41:56,699 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:41:56,699 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-30 09:41:56,699 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:41:56,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:41:56,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1247005, now seen corresponding path program 2 times [2023-11-30 09:41:56,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:41:56,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889839968] [2023-11-30 09:41:56,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:41:56,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:41:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:41:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:41:56,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:41:56,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889839968] [2023-11-30 09:41:56,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889839968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:41:56,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435552641] [2023-11-30 09:41:56,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:41:56,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:41:56,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:41:56,810 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:41:56,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-30 09:41:57,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-30 09:41:57,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:41:57,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-30 09:41:57,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:41:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:41:57,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:41:57,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435552641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:41:57,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:41:57,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-30 09:41:57,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757056307] [2023-11-30 09:41:57,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:41:57,281 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 09:41:57,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:41:57,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 09:41:57,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-30 09:41:57,282 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 316 [2023-11-30 09:41:57,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 1995 transitions, 37097 flow. Second operand has 4 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 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 09:41:57,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:41:57,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 316 [2023-11-30 09:41:57,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:42:11,096 INFO L124 PetriNetUnfolderBase]: 27600/50254 cut-off events. [2023-11-30 09:42:11,097 INFO L125 PetriNetUnfolderBase]: For 578174/652683 co-relation queries the response was YES. [2023-11-30 09:42:11,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410531 conditions, 50254 events. 27600/50254 cut-off events. For 578174/652683 co-relation queries the response was YES. Maximal size of possible extension queue 1729. Compared 462069 event pairs, 6683 based on Foata normal form. 38/33178 useless extension candidates. Maximal degree in co-relation 155040. Up to 24508 conditions per place. [2023-11-30 09:42:11,803 INFO L140 encePairwiseOnDemand]: 313/316 looper letters, 422 selfloop transitions, 15 changer transitions 77/1988 dead transitions. [2023-11-30 09:42:11,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 1988 transitions, 37859 flow [2023-11-30 09:42:11,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 09:42:11,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 09:42:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1076 transitions. [2023-11-30 09:42:11,805 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8512658227848101 [2023-11-30 09:42:11,805 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1076 transitions. [2023-11-30 09:42:11,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1076 transitions. [2023-11-30 09:42:11,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:42:11,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1076 transitions. [2023-11-30 09:42:11,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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 09:42:11,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 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 09:42:11,807 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 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 09:42:11,807 INFO L307 CegarLoopForPetriNet]: 278 programPoint places, 152 predicate places. [2023-11-30 09:42:11,808 INFO L500 AbstractCegarLoop]: Abstraction has has 430 places, 1988 transitions, 37859 flow [2023-11-30 09:42:11,808 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 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 09:42:11,808 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:42:11,808 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:42:11,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-30 09:42:12,012 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:42:12,012 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-30 09:42:12,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:42:12,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1247004, now seen corresponding path program 1 times [2023-11-30 09:42:12,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:42:12,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217505533] [2023-11-30 09:42:12,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:42:12,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:42:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:42:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:42:12,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:42:12,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217505533] [2023-11-30 09:42:12,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217505533] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:42:12,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452964186] [2023-11-30 09:42:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:42:12,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:42:12,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:42:12,104 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 09:42:12,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-30 09:42:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:42:12,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-30 09:42:12,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:42:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:42:12,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:42:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:42:12,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452964186] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:42:12,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:42:12,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-30 09:42:12,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101630797] [2023-11-30 09:42:12,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:42:12,580 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 09:42:12,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:42:12,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 09:42:12,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-30 09:42:12,582 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 316 [2023-11-30 09:42:12,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1988 transitions, 37859 flow. Second operand has 7 states, 7 states have (on average 259.2857142857143) internal successors, (1815), 7 states have internal predecessors, (1815), 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 09:42:12,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:42:12,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 316 [2023-11-30 09:42:12,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand