/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 01:40:07,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 01:40:07,707 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-VariableLbe.epf [2023-08-27 01:40:07,711 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 01:40:07,712 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 01:40:07,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 01:40:07,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 01:40:07,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 01:40:07,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 01:40:07,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 01:40:07,747 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 01:40:07,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 01:40:07,747 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 01:40:07,748 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 01:40:07,748 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 01:40:07,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 01:40:07,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 01:40:07,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 01:40:07,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 01:40:07,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 01:40:07,750 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 01:40:07,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 01:40:07,750 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 01:40:07,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 01:40:07,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 01:40:07,751 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 01:40:07,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 01:40:07,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:40:07,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 01:40:07,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 01:40:07,753 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 01:40:07,753 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 01:40:07,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 01:40:07,753 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 01:40:07,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 01:40:07,754 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 01:40:08,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 01:40:08,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 01:40:08,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 01:40:08,086 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 01:40:08,086 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 01:40:08,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2023-08-27 01:40:09,157 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 01:40:09,373 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 01:40:09,374 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2023-08-27 01:40:09,382 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de558ab96/f9c521c67c0247d5af5ac82a45b77b9b/FLAG61e8823bf [2023-08-27 01:40:09,398 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de558ab96/f9c521c67c0247d5af5ac82a45b77b9b [2023-08-27 01:40:09,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 01:40:09,404 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 01:40:09,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 01:40:09,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 01:40:09,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 01:40:09,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786cc942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09, skipping insertion in model container [2023-08-27 01:40:09,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,432 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 01:40:09,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:40:09,602 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 01:40:09,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:40:09,639 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:40:09,639 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:40:09,645 INFO L206 MainTranslator]: Completed translation [2023-08-27 01:40:09,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09 WrapperNode [2023-08-27 01:40:09,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 01:40:09,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 01:40:09,647 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 01:40:09,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 01:40:09,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,690 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2023-08-27 01:40:09,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 01:40:09,691 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 01:40:09,691 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 01:40:09,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 01:40:09,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 01:40:09,726 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 01:40:09,726 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 01:40:09,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 01:40:09,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09" (1/1) ... [2023-08-27 01:40:09,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:40:09,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:09,754 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) [2023-08-27 01:40:09,779 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 [2023-08-27 01:40:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 01:40:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 01:40:09,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 01:40:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 01:40:09,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 01:40:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 01:40:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 01:40:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 01:40:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 01:40:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 01:40:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 01:40:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 01:40:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 01:40:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 01:40:09,800 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 01:40:09,904 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 01:40:09,915 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 01:40:10,175 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 01:40:10,254 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 01:40:10,254 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 01:40:10,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:40:10 BoogieIcfgContainer [2023-08-27 01:40:10,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 01:40:10,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 01:40:10,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 01:40:10,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 01:40:10,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:40:09" (1/3) ... [2023-08-27 01:40:10,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b662af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:40:10, skipping insertion in model container [2023-08-27 01:40:10,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:40:09" (2/3) ... [2023-08-27 01:40:10,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b662af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:40:10, skipping insertion in model container [2023-08-27 01:40:10,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:40:10" (3/3) ... [2023-08-27 01:40:10,269 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2023-08-27 01:40:10,285 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 01:40:10,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-27 01:40:10,285 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 01:40:10,357 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 01:40:10,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 97 transitions, 210 flow [2023-08-27 01:40:10,461 INFO L124 PetriNetUnfolderBase]: 6/95 cut-off events. [2023-08-27 01:40:10,461 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 01:40:10,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 6/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2023-08-27 01:40:10,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 97 transitions, 210 flow [2023-08-27 01:40:10,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 86 transitions, 184 flow [2023-08-27 01:40:10,475 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 01:40:10,486 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 86 transitions, 184 flow [2023-08-27 01:40:10,490 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 86 transitions, 184 flow [2023-08-27 01:40:10,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 184 flow [2023-08-27 01:40:10,536 INFO L124 PetriNetUnfolderBase]: 6/86 cut-off events. [2023-08-27 01:40:10,536 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 01:40:10,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 6/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2023-08-27 01:40:10,539 INFO L119 LiptonReduction]: Number of co-enabled transitions 812 [2023-08-27 01:40:13,078 INFO L134 LiptonReduction]: Checked pairs total: 975 [2023-08-27 01:40:13,079 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-27 01:40:13,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 01:40:13,096 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@24895f9a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 01:40:13,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 01:40:13,099 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 01:40:13,099 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-08-27 01:40:13,099 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:40:13,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:13,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 01:40:13,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:13,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash 12474592, now seen corresponding path program 1 times [2023-08-27 01:40:13,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:13,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669645100] [2023-08-27 01:40:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:13,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:13,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:13,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669645100] [2023-08-27 01:40:13,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669645100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:40:13,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:40:13,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:40:13,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120780734] [2023-08-27 01:40:13,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:40:13,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:40:13,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:13,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:40:13,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:40:13,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 178 [2023-08-27 01:40:13,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-08-27 01:40:13,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:13,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 178 [2023-08-27 01:40:13,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:13,444 INFO L124 PetriNetUnfolderBase]: 231/359 cut-off events. [2023-08-27 01:40:13,445 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-27 01:40:13,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 359 events. 231/359 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 1344 event pairs, 39 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 619. Up to 310 conditions per place. [2023-08-27 01:40:13,449 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 33 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-08-27 01:40:13,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 173 flow [2023-08-27 01:40:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:40:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:40:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-27 01:40:13,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205992509363296 [2023-08-27 01:40:13,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-27 01:40:13,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-27 01:40:13,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:13,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-27 01:40:13,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2023-08-27 01:40:13,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-08-27 01:40:13,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-08-27 01:40:13,473 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 62 flow. Second operand 3 states and 278 transitions. [2023-08-27 01:40:13,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 173 flow [2023-08-27 01:40:13,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 39 transitions, 159 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 01:40:13,477 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 86 flow [2023-08-27 01:40:13,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-08-27 01:40:13,481 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2023-08-27 01:40:13,481 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 86 flow [2023-08-27 01:40:13,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-08-27 01:40:13,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:13,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 01:40:13,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 01:40:13,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:13,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:13,482 INFO L85 PathProgramCache]: Analyzing trace with hash 386714362, now seen corresponding path program 1 times [2023-08-27 01:40:13,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:13,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882183010] [2023-08-27 01:40:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:13,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:13,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:13,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882183010] [2023-08-27 01:40:13,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882183010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:13,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640082025] [2023-08-27 01:40:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:13,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:13,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:13,560 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) [2023-08-27 01:40:13,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 01:40:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:13,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:40:13,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:13,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:13,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640082025] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:13,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:13,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 01:40:13,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724991880] [2023-08-27 01:40:13,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:13,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:40:13,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:13,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:40:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:40:13,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 178 [2023-08-27 01:40:13,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 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) [2023-08-27 01:40:13,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:13,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 178 [2023-08-27 01:40:13,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:13,862 INFO L124 PetriNetUnfolderBase]: 551/812 cut-off events. [2023-08-27 01:40:13,863 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-27 01:40:13,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 812 events. 551/812 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 3601 event pairs, 81 based on Foata normal form. 0/430 useless extension candidates. Maximal degree in co-relation 598. Up to 428 conditions per place. [2023-08-27 01:40:13,870 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 64 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2023-08-27 01:40:13,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 78 transitions, 389 flow [2023-08-27 01:40:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:40:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:40:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 01:40:13,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48154093097913325 [2023-08-27 01:40:13,874 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 01:40:13,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 01:40:13,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:13,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 01:40:13,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 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) [2023-08-27 01:40:13,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 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) [2023-08-27 01:40:13,880 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 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) [2023-08-27 01:40:13,880 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 86 flow. Second operand 7 states and 600 transitions. [2023-08-27 01:40:13,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 78 transitions, 389 flow [2023-08-27 01:40:13,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 78 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:40:13,882 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 154 flow [2023-08-27 01:40:13,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-08-27 01:40:13,883 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2023-08-27 01:40:13,883 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 154 flow [2023-08-27 01:40:13,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.42857142857143) internal successors, (528), 7 states have internal predecessors, (528), 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) [2023-08-27 01:40:13,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:13,884 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 01:40:13,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:14,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:14,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:14,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:14,091 INFO L85 PathProgramCache]: Analyzing trace with hash -896756236, now seen corresponding path program 1 times [2023-08-27 01:40:14,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:14,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705563602] [2023-08-27 01:40:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:14,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:14,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:14,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705563602] [2023-08-27 01:40:14,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705563602] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:14,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900763181] [2023-08-27 01:40:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:14,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:14,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:14,211 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) [2023-08-27 01:40:14,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 01:40:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:14,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 01:40:14,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:14,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:40:14,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900763181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:40:14,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:40:14,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-27 01:40:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243132472] [2023-08-27 01:40:14,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:40:14,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:40:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:14,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:40:14,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 01:40:14,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 178 [2023-08-27 01:40:14,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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) [2023-08-27 01:40:14,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:14,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 178 [2023-08-27 01:40:14,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:14,408 INFO L124 PetriNetUnfolderBase]: 492/739 cut-off events. [2023-08-27 01:40:14,409 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 01:40:14,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 739 events. 492/739 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 3349 event pairs, 38 based on Foata normal form. 28/516 useless extension candidates. Maximal degree in co-relation 1093. Up to 434 conditions per place. [2023-08-27 01:40:14,416 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 45 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2023-08-27 01:40:14,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 298 flow [2023-08-27 01:40:14,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:40:14,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:40:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-08-27 01:40:14,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730337078651685 [2023-08-27 01:40:14,418 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-08-27 01:40:14,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-08-27 01:40:14,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:14,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-08-27 01:40:14,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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) [2023-08-27 01:40:14,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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) [2023-08-27 01:40:14,422 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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) [2023-08-27 01:40:14,422 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 154 flow. Second operand 5 states and 421 transitions. [2023-08-27 01:40:14,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 298 flow [2023-08-27 01:40:14,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 294 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 01:40:14,427 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 139 flow [2023-08-27 01:40:14,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-27 01:40:14,429 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2023-08-27 01:40:14,429 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 139 flow [2023-08-27 01:40:14,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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) [2023-08-27 01:40:14,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:14,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 01:40:14,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:14,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-27 01:40:14,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:14,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash 386714311, now seen corresponding path program 1 times [2023-08-27 01:40:14,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:14,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940061796] [2023-08-27 01:40:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:14,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:14,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:14,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940061796] [2023-08-27 01:40:14,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940061796] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:14,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539984516] [2023-08-27 01:40:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:14,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:14,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:14,721 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) [2023-08-27 01:40:14,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 01:40:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:14,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:40:14,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:14,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:14,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539984516] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:14,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:14,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:40:14,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257306013] [2023-08-27 01:40:14,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:14,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:40:14,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:40:14,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:40:14,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 178 [2023-08-27 01:40:14,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 139 flow. Second operand has 7 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 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) [2023-08-27 01:40:14,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:14,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 178 [2023-08-27 01:40:14,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:15,030 INFO L124 PetriNetUnfolderBase]: 689/1076 cut-off events. [2023-08-27 01:40:15,030 INFO L125 PetriNetUnfolderBase]: For 728/728 co-relation queries the response was YES. [2023-08-27 01:40:15,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3350 conditions, 1076 events. 689/1076 cut-off events. For 728/728 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4823 event pairs, 41 based on Foata normal form. 46/890 useless extension candidates. Maximal degree in co-relation 1226. Up to 468 conditions per place. [2023-08-27 01:40:15,038 INFO L140 encePairwiseOnDemand]: 169/178 looper letters, 93 selfloop transitions, 34 changer transitions 0/129 dead transitions. [2023-08-27 01:40:15,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 129 transitions, 803 flow [2023-08-27 01:40:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:40:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:40:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 659 transitions. [2023-08-27 01:40:15,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528892455858748 [2023-08-27 01:40:15,041 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 659 transitions. [2023-08-27 01:40:15,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 659 transitions. [2023-08-27 01:40:15,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:15,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 659 transitions. [2023-08-27 01:40:15,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.14285714285714) internal successors, (659), 7 states have internal predecessors, (659), 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) [2023-08-27 01:40:15,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 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) [2023-08-27 01:40:15,053 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 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) [2023-08-27 01:40:15,053 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 139 flow. Second operand 7 states and 659 transitions. [2023-08-27 01:40:15,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 129 transitions, 803 flow [2023-08-27 01:40:15,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 129 transitions, 773 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 01:40:15,060 INFO L231 Difference]: Finished difference. Result has 45 places, 60 transitions, 484 flow [2023-08-27 01:40:15,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=45, PETRI_TRANSITIONS=60} [2023-08-27 01:40:15,061 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2023-08-27 01:40:15,061 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 60 transitions, 484 flow [2023-08-27 01:40:15,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 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) [2023-08-27 01:40:15,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:15,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 01:40:15,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 01:40:15,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:15,272 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:15,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:15,272 INFO L85 PathProgramCache]: Analyzing trace with hash 386714310, now seen corresponding path program 1 times [2023-08-27 01:40:15,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:15,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77521100] [2023-08-27 01:40:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:15,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:15,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77521100] [2023-08-27 01:40:15,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77521100] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:15,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76049811] [2023-08-27 01:40:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:15,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:15,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:15,321 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) [2023-08-27 01:40:15,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 01:40:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:15,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:40:15,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:15,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:40:15,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76049811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:40:15,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:40:15,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 01:40:15,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503779841] [2023-08-27 01:40:15,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:40:15,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:40:15,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:15,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:40:15,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:40:15,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 178 [2023-08-27 01:40:15,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 60 transitions, 484 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2023-08-27 01:40:15,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:15,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 178 [2023-08-27 01:40:15,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:15,575 INFO L124 PetriNetUnfolderBase]: 705/1137 cut-off events. [2023-08-27 01:40:15,575 INFO L125 PetriNetUnfolderBase]: For 2377/2377 co-relation queries the response was YES. [2023-08-27 01:40:15,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4810 conditions, 1137 events. 705/1137 cut-off events. For 2377/2377 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5309 event pairs, 86 based on Foata normal form. 136/1163 useless extension candidates. Maximal degree in co-relation 2511. Up to 595 conditions per place. [2023-08-27 01:40:15,583 INFO L140 encePairwiseOnDemand]: 169/178 looper letters, 49 selfloop transitions, 29 changer transitions 0/80 dead transitions. [2023-08-27 01:40:15,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 80 transitions, 767 flow [2023-08-27 01:40:15,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:40:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:40:15,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2023-08-27 01:40:15,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943820224719101 [2023-08-27 01:40:15,585 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2023-08-27 01:40:15,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2023-08-27 01:40:15,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:15,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2023-08-27 01:40:15,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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) [2023-08-27 01:40:15,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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) [2023-08-27 01:40:15,590 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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) [2023-08-27 01:40:15,590 INFO L175 Difference]: Start difference. First operand has 45 places, 60 transitions, 484 flow. Second operand 4 states and 352 transitions. [2023-08-27 01:40:15,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 80 transitions, 767 flow [2023-08-27 01:40:15,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 80 transitions, 685 flow, removed 41 selfloop flow, removed 0 redundant places. [2023-08-27 01:40:15,601 INFO L231 Difference]: Finished difference. Result has 49 places, 66 transitions, 621 flow [2023-08-27 01:40:15,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=621, PETRI_PLACES=49, PETRI_TRANSITIONS=66} [2023-08-27 01:40:15,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2023-08-27 01:40:15,603 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 66 transitions, 621 flow [2023-08-27 01:40:15,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2023-08-27 01:40:15,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:15,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:15,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 01:40:15,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:15,811 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:15,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:15,812 INFO L85 PathProgramCache]: Analyzing trace with hash 202576956, now seen corresponding path program 1 times [2023-08-27 01:40:15,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:15,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555951745] [2023-08-27 01:40:15,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:15,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:15,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:15,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555951745] [2023-08-27 01:40:15,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555951745] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:40:15,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:40:15,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:40:15,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843819601] [2023-08-27 01:40:15,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:40:15,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:40:15,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:15,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:40:15,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:40:15,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 178 [2023-08-27 01:40:15,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 66 transitions, 621 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-08-27 01:40:15,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:15,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 178 [2023-08-27 01:40:15,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:16,007 INFO L124 PetriNetUnfolderBase]: 729/1261 cut-off events. [2023-08-27 01:40:16,007 INFO L125 PetriNetUnfolderBase]: For 4034/4034 co-relation queries the response was YES. [2023-08-27 01:40:16,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 1261 events. 729/1261 cut-off events. For 4034/4034 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6393 event pairs, 283 based on Foata normal form. 22/1179 useless extension candidates. Maximal degree in co-relation 2755. Up to 1057 conditions per place. [2023-08-27 01:40:16,016 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 85 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2023-08-27 01:40:16,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 91 transitions, 970 flow [2023-08-27 01:40:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:40:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:40:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-08-27 01:40:16,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50187265917603 [2023-08-27 01:40:16,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-08-27 01:40:16,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-08-27 01:40:16,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:16,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-08-27 01:40:16,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2023-08-27 01:40:16,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-08-27 01:40:16,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-08-27 01:40:16,021 INFO L175 Difference]: Start difference. First operand has 49 places, 66 transitions, 621 flow. Second operand 3 states and 268 transitions. [2023-08-27 01:40:16,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 91 transitions, 970 flow [2023-08-27 01:40:16,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 91 transitions, 897 flow, removed 36 selfloop flow, removed 1 redundant places. [2023-08-27 01:40:16,037 INFO L231 Difference]: Finished difference. Result has 51 places, 70 transitions, 637 flow [2023-08-27 01:40:16,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=637, PETRI_PLACES=51, PETRI_TRANSITIONS=70} [2023-08-27 01:40:16,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2023-08-27 01:40:16,042 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 70 transitions, 637 flow [2023-08-27 01:40:16,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2023-08-27 01:40:16,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:16,043 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 01:40:16,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 01:40:16,043 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:16,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1505696467, now seen corresponding path program 2 times [2023-08-27 01:40:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:16,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009518606] [2023-08-27 01:40:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:16,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:16,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:16,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009518606] [2023-08-27 01:40:16,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009518606] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:16,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664639810] [2023-08-27 01:40:16,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:40:16,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:16,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:16,129 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) [2023-08-27 01:40:16,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 01:40:16,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:40:16,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:40:16,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:40:16,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 01:40:16,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:40:16,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664639810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:40:16,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:40:16,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-27 01:40:16,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052288176] [2023-08-27 01:40:16,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:40:16,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:40:16,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:16,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:40:16,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:40:16,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 178 [2023-08-27 01:40:16,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 70 transitions, 637 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2023-08-27 01:40:16,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:16,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 178 [2023-08-27 01:40:16,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:16,299 INFO L124 PetriNetUnfolderBase]: 587/1022 cut-off events. [2023-08-27 01:40:16,299 INFO L125 PetriNetUnfolderBase]: For 2948/2985 co-relation queries the response was YES. [2023-08-27 01:40:16,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4245 conditions, 1022 events. 587/1022 cut-off events. For 2948/2985 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5114 event pairs, 291 based on Foata normal form. 98/1009 useless extension candidates. Maximal degree in co-relation 2852. Up to 1018 conditions per place. [2023-08-27 01:40:16,306 INFO L140 encePairwiseOnDemand]: 176/178 looper letters, 59 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-27 01:40:16,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 660 flow [2023-08-27 01:40:16,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:40:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:40:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-08-27 01:40:16,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307116104868914 [2023-08-27 01:40:16,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-08-27 01:40:16,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-08-27 01:40:16,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:16,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-08-27 01:40:16,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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) [2023-08-27 01:40:16,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-08-27 01:40:16,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-08-27 01:40:16,310 INFO L175 Difference]: Start difference. First operand has 51 places, 70 transitions, 637 flow. Second operand 3 states and 230 transitions. [2023-08-27 01:40:16,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 660 flow [2023-08-27 01:40:16,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 629 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 01:40:16,324 INFO L231 Difference]: Finished difference. Result has 48 places, 62 transitions, 511 flow [2023-08-27 01:40:16,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=511, PETRI_PLACES=48, PETRI_TRANSITIONS=62} [2023-08-27 01:40:16,325 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2023-08-27 01:40:16,327 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 62 transitions, 511 flow [2023-08-27 01:40:16,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2023-08-27 01:40:16,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:16,327 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 01:40:16,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:16,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:16,537 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:16,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:16,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1505696416, now seen corresponding path program 2 times [2023-08-27 01:40:16,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:16,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735255919] [2023-08-27 01:40:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:16,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:16,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:16,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735255919] [2023-08-27 01:40:16,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735255919] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:16,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74499722] [2023-08-27 01:40:16,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:40:16,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:16,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:16,621 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) [2023-08-27 01:40:16,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 01:40:16,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:40:16,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:40:16,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 01:40:16,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:16,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:16,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74499722] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:16,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:16,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 01:40:16,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026048946] [2023-08-27 01:40:16,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:16,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:40:16,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:16,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:40:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:40:16,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 178 [2023-08-27 01:40:16,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 62 transitions, 511 flow. Second operand has 13 states, 13 states have (on average 79.3076923076923) internal successors, (1031), 13 states have internal predecessors, (1031), 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) [2023-08-27 01:40:16,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:16,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 178 [2023-08-27 01:40:16,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:17,185 INFO L124 PetriNetUnfolderBase]: 1441/2619 cut-off events. [2023-08-27 01:40:17,186 INFO L125 PetriNetUnfolderBase]: For 8197/8269 co-relation queries the response was YES. [2023-08-27 01:40:17,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10055 conditions, 2619 events. 1441/2619 cut-off events. For 8197/8269 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15950 event pairs, 117 based on Foata normal form. 398/2665 useless extension candidates. Maximal degree in co-relation 10036. Up to 759 conditions per place. [2023-08-27 01:40:17,204 INFO L140 encePairwiseOnDemand]: 171/178 looper letters, 167 selfloop transitions, 114 changer transitions 0/283 dead transitions. [2023-08-27 01:40:17,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 283 transitions, 2371 flow [2023-08-27 01:40:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 01:40:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 01:40:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1215 transitions. [2023-08-27 01:40:17,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5250648228176318 [2023-08-27 01:40:17,208 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1215 transitions. [2023-08-27 01:40:17,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1215 transitions. [2023-08-27 01:40:17,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:17,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1215 transitions. [2023-08-27 01:40:17,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 93.46153846153847) internal successors, (1215), 13 states have internal predecessors, (1215), 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) [2023-08-27 01:40:17,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 178.0) internal successors, (2492), 14 states have internal predecessors, (2492), 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) [2023-08-27 01:40:17,215 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 178.0) internal successors, (2492), 14 states have internal predecessors, (2492), 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) [2023-08-27 01:40:17,215 INFO L175 Difference]: Start difference. First operand has 48 places, 62 transitions, 511 flow. Second operand 13 states and 1215 transitions. [2023-08-27 01:40:17,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 283 transitions, 2371 flow [2023-08-27 01:40:17,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 283 transitions, 2370 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:40:17,264 INFO L231 Difference]: Finished difference. Result has 70 places, 155 transitions, 2022 flow [2023-08-27 01:40:17,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2022, PETRI_PLACES=70, PETRI_TRANSITIONS=155} [2023-08-27 01:40:17,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-08-27 01:40:17,265 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 155 transitions, 2022 flow [2023-08-27 01:40:17,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.3076923076923) internal successors, (1031), 13 states have internal predecessors, (1031), 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) [2023-08-27 01:40:17,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:17,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:17,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:17,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:17,471 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:17,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:17,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1999381908, now seen corresponding path program 1 times [2023-08-27 01:40:17,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:17,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163850849] [2023-08-27 01:40:17,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:17,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:17,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:17,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163850849] [2023-08-27 01:40:17,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163850849] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:17,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64232280] [2023-08-27 01:40:17,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:17,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:17,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:17,542 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) [2023-08-27 01:40:17,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 01:40:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:17,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:40:17,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:40:17,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:40:17,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64232280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:40:17,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:40:17,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 01:40:17,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774843153] [2023-08-27 01:40:17,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:40:17,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:40:17,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:17,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:40:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 01:40:17,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 178 [2023-08-27 01:40:17,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 155 transitions, 2022 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2023-08-27 01:40:17,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:17,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 178 [2023-08-27 01:40:17,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:17,867 INFO L124 PetriNetUnfolderBase]: 1168/2149 cut-off events. [2023-08-27 01:40:17,868 INFO L125 PetriNetUnfolderBase]: For 10761/10834 co-relation queries the response was YES. [2023-08-27 01:40:17,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9789 conditions, 2149 events. 1168/2149 cut-off events. For 10761/10834 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12676 event pairs, 668 based on Foata normal form. 68/2052 useless extension candidates. Maximal degree in co-relation 9758. Up to 2145 conditions per place. [2023-08-27 01:40:17,887 INFO L140 encePairwiseOnDemand]: 176/178 looper letters, 130 selfloop transitions, 1 changer transitions 0/133 dead transitions. [2023-08-27 01:40:17,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 133 transitions, 1972 flow [2023-08-27 01:40:17,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:40:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:40:17,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-27 01:40:17,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288389513108614 [2023-08-27 01:40:17,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-27 01:40:17,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-27 01:40:17,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:17,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-27 01:40:17,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-08-27 01:40:17,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-08-27 01:40:17,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-08-27 01:40:17,891 INFO L175 Difference]: Start difference. First operand has 70 places, 155 transitions, 2022 flow. Second operand 3 states and 229 transitions. [2023-08-27 01:40:17,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 133 transitions, 1972 flow [2023-08-27 01:40:17,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 133 transitions, 1789 flow, removed 88 selfloop flow, removed 1 redundant places. [2023-08-27 01:40:17,971 INFO L231 Difference]: Finished difference. Result has 70 places, 133 transitions, 1529 flow [2023-08-27 01:40:17,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1529, PETRI_PLACES=70, PETRI_TRANSITIONS=133} [2023-08-27 01:40:17,972 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-08-27 01:40:17,972 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 133 transitions, 1529 flow [2023-08-27 01:40:17,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2023-08-27 01:40:17,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:17,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:17,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:18,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:18,178 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:18,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1999381907, now seen corresponding path program 1 times [2023-08-27 01:40:18,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:18,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851755238] [2023-08-27 01:40:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:18,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:18,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:18,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851755238] [2023-08-27 01:40:18,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851755238] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:18,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096939282] [2023-08-27 01:40:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:18,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:18,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:18,235 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:18,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 01:40:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:18,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 01:40:18,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:18,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:18,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096939282] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:18,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 01:40:18,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2023-08-27 01:40:18,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788737109] [2023-08-27 01:40:18,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:40:18,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:40:18,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:18,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:40:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-27 01:40:18,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 178 [2023-08-27 01:40:18,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 133 transitions, 1529 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2023-08-27 01:40:18,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:18,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 178 [2023-08-27 01:40:18,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:18,643 INFO L124 PetriNetUnfolderBase]: 987/1837 cut-off events. [2023-08-27 01:40:18,643 INFO L125 PetriNetUnfolderBase]: For 7422/7422 co-relation queries the response was YES. [2023-08-27 01:40:18,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1837 events. 987/1837 cut-off events. For 7422/7422 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 10397 event pairs, 177 based on Foata normal form. 94/1851 useless extension candidates. Maximal degree in co-relation 7224. Up to 1650 conditions per place. [2023-08-27 01:40:18,656 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 122 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2023-08-27 01:40:18,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 127 transitions, 1577 flow [2023-08-27 01:40:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:40:18,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:40:18,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-27 01:40:18,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46207865168539325 [2023-08-27 01:40:18,658 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-27 01:40:18,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-27 01:40:18,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:18,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-27 01:40:18,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2023-08-27 01:40:18,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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) [2023-08-27 01:40:18,660 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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) [2023-08-27 01:40:18,660 INFO L175 Difference]: Start difference. First operand has 70 places, 133 transitions, 1529 flow. Second operand 4 states and 329 transitions. [2023-08-27 01:40:18,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 127 transitions, 1577 flow [2023-08-27 01:40:18,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 127 transitions, 1558 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-27 01:40:18,678 INFO L231 Difference]: Finished difference. Result has 70 places, 106 transitions, 1183 flow [2023-08-27 01:40:18,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1183, PETRI_PLACES=70, PETRI_TRANSITIONS=106} [2023-08-27 01:40:18,679 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-08-27 01:40:18,679 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 106 transitions, 1183 flow [2023-08-27 01:40:18,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2023-08-27 01:40:18,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:18,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:18,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:18,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 01:40:18,881 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:18,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:18,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1192331566, now seen corresponding path program 1 times [2023-08-27 01:40:18,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:18,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940900828] [2023-08-27 01:40:18,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:18,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:18,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:18,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940900828] [2023-08-27 01:40:18,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940900828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:40:18,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:40:18,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:40:18,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433904171] [2023-08-27 01:40:18,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:40:18,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:40:18,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:18,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:40:18,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:40:18,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 178 [2023-08-27 01:40:18,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 106 transitions, 1183 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2023-08-27 01:40:18,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:18,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 178 [2023-08-27 01:40:18,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:19,116 INFO L124 PetriNetUnfolderBase]: 898/1645 cut-off events. [2023-08-27 01:40:19,116 INFO L125 PetriNetUnfolderBase]: For 7882/7952 co-relation queries the response was YES. [2023-08-27 01:40:19,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 1645 events. 898/1645 cut-off events. For 7882/7952 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9110 event pairs, 545 based on Foata normal form. 60/1656 useless extension candidates. Maximal degree in co-relation 6672. Up to 1638 conditions per place. [2023-08-27 01:40:19,129 INFO L140 encePairwiseOnDemand]: 176/178 looper letters, 101 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2023-08-27 01:40:19,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 1385 flow [2023-08-27 01:40:19,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:40:19,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:40:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2023-08-27 01:40:19,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40262172284644193 [2023-08-27 01:40:19,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2023-08-27 01:40:19,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2023-08-27 01:40:19,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:19,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2023-08-27 01:40:19,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2023-08-27 01:40:19,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-08-27 01:40:19,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 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) [2023-08-27 01:40:19,133 INFO L175 Difference]: Start difference. First operand has 70 places, 106 transitions, 1183 flow. Second operand 3 states and 215 transitions. [2023-08-27 01:40:19,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 1385 flow [2023-08-27 01:40:19,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 105 transitions, 1385 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 01:40:19,153 INFO L231 Difference]: Finished difference. Result has 71 places, 105 transitions, 1183 flow [2023-08-27 01:40:19,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1183, PETRI_PLACES=71, PETRI_TRANSITIONS=105} [2023-08-27 01:40:19,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2023-08-27 01:40:19,154 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 105 transitions, 1183 flow [2023-08-27 01:40:19,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2023-08-27 01:40:19,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:19,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:19,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 01:40:19,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:19,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:19,155 INFO L85 PathProgramCache]: Analyzing trace with hash 388104659, now seen corresponding path program 1 times [2023-08-27 01:40:19,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:19,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528663526] [2023-08-27 01:40:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:19,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:19,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528663526] [2023-08-27 01:40:19,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528663526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:40:19,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:40:19,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 01:40:19,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464101649] [2023-08-27 01:40:19,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:40:19,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:40:19,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:19,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:40:19,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 01:40:19,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 178 [2023-08-27 01:40:19,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 105 transitions, 1183 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2023-08-27 01:40:19,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:19,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 178 [2023-08-27 01:40:19,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:19,404 INFO L124 PetriNetUnfolderBase]: 890/1621 cut-off events. [2023-08-27 01:40:19,404 INFO L125 PetriNetUnfolderBase]: For 7783/7852 co-relation queries the response was YES. [2023-08-27 01:40:19,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 1621 events. 890/1621 cut-off events. For 7783/7852 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8843 event pairs, 403 based on Foata normal form. 69/1645 useless extension candidates. Maximal degree in co-relation 6612. Up to 1592 conditions per place. [2023-08-27 01:40:19,416 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 105 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-27 01:40:19,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 110 transitions, 1420 flow [2023-08-27 01:40:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:40:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:40:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2023-08-27 01:40:19,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38202247191011235 [2023-08-27 01:40:19,417 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2023-08-27 01:40:19,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2023-08-27 01:40:19,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:19,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2023-08-27 01:40:19,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-08-27 01:40:19,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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) [2023-08-27 01:40:19,420 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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) [2023-08-27 01:40:19,420 INFO L175 Difference]: Start difference. First operand has 71 places, 105 transitions, 1183 flow. Second operand 4 states and 272 transitions. [2023-08-27 01:40:19,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 110 transitions, 1420 flow [2023-08-27 01:40:19,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 110 transitions, 1419 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:40:19,439 INFO L231 Difference]: Finished difference. Result has 73 places, 104 transitions, 1184 flow [2023-08-27 01:40:19,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1184, PETRI_PLACES=73, PETRI_TRANSITIONS=104} [2023-08-27 01:40:19,440 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2023-08-27 01:40:19,440 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 104 transitions, 1184 flow [2023-08-27 01:40:19,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2023-08-27 01:40:19,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:19,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:19,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 01:40:19,441 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:19,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:19,441 INFO L85 PathProgramCache]: Analyzing trace with hash 954169268, now seen corresponding path program 1 times [2023-08-27 01:40:19,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:19,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186936102] [2023-08-27 01:40:19,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:19,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:40:19,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:19,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186936102] [2023-08-27 01:40:19,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186936102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:40:19,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:40:19,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 01:40:19,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451982898] [2023-08-27 01:40:19,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:40:19,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:40:19,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:19,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:40:19,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 01:40:19,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 178 [2023-08-27 01:40:19,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 104 transitions, 1184 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-27 01:40:19,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:19,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 178 [2023-08-27 01:40:19,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:19,678 INFO L124 PetriNetUnfolderBase]: 874/1562 cut-off events. [2023-08-27 01:40:19,678 INFO L125 PetriNetUnfolderBase]: For 7031/7031 co-relation queries the response was YES. [2023-08-27 01:40:19,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6676 conditions, 1562 events. 874/1562 cut-off events. For 7031/7031 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 8054 event pairs, 435 based on Foata normal form. 64/1597 useless extension candidates. Maximal degree in co-relation 6643. Up to 1390 conditions per place. [2023-08-27 01:40:19,689 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 109 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2023-08-27 01:40:19,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 124 transitions, 1623 flow [2023-08-27 01:40:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:40:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:40:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-08-27 01:40:19,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4241573033707865 [2023-08-27 01:40:19,691 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-08-27 01:40:19,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-08-27 01:40:19,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:19,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-08-27 01:40:19,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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) [2023-08-27 01:40:19,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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) [2023-08-27 01:40:19,693 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 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) [2023-08-27 01:40:19,693 INFO L175 Difference]: Start difference. First operand has 73 places, 104 transitions, 1184 flow. Second operand 4 states and 302 transitions. [2023-08-27 01:40:19,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 124 transitions, 1623 flow [2023-08-27 01:40:19,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 124 transitions, 1615 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 01:40:19,713 INFO L231 Difference]: Finished difference. Result has 74 places, 104 transitions, 1221 flow [2023-08-27 01:40:19,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1221, PETRI_PLACES=74, PETRI_TRANSITIONS=104} [2023-08-27 01:40:19,714 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2023-08-27 01:40:19,714 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 104 transitions, 1221 flow [2023-08-27 01:40:19,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-27 01:40:19,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:19,715 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-27 01:40:19,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 01:40:19,715 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:19,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1094952640, now seen corresponding path program 3 times [2023-08-27 01:40:19,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:19,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259673308] [2023-08-27 01:40:19,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:19,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:19,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:19,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259673308] [2023-08-27 01:40:19,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259673308] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:19,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035708419] [2023-08-27 01:40:19,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:40:19,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:19,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:19,834 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:19,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 01:40:19,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-27 01:40:19,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:40:19,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 01:40:19,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:19,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:20,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035708419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:20,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:20,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-27 01:40:20,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141401689] [2023-08-27 01:40:20,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:20,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:40:20,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:40:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:40:20,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 178 [2023-08-27 01:40:20,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 104 transitions, 1221 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 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) [2023-08-27 01:40:20,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:20,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 178 [2023-08-27 01:40:20,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:20,927 INFO L124 PetriNetUnfolderBase]: 2230/4192 cut-off events. [2023-08-27 01:40:20,927 INFO L125 PetriNetUnfolderBase]: For 61052/61316 co-relation queries the response was YES. [2023-08-27 01:40:20,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17110 conditions, 4192 events. 2230/4192 cut-off events. For 61052/61316 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 25974 event pairs, 196 based on Foata normal form. 818/4900 useless extension candidates. Maximal degree in co-relation 17076. Up to 1149 conditions per place. [2023-08-27 01:40:20,961 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 261 selfloop transitions, 242 changer transitions 0/506 dead transitions. [2023-08-27 01:40:20,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 506 transitions, 4843 flow [2023-08-27 01:40:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 01:40:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 01:40:20,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2278 transitions. [2023-08-27 01:40:20,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119101123595505 [2023-08-27 01:40:20,970 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2278 transitions. [2023-08-27 01:40:20,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2278 transitions. [2023-08-27 01:40:20,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:20,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2278 transitions. [2023-08-27 01:40:20,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 91.12) internal successors, (2278), 25 states have internal predecessors, (2278), 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) [2023-08-27 01:40:20,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 178.0) internal successors, (4628), 26 states have internal predecessors, (4628), 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) [2023-08-27 01:40:20,982 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 178.0) internal successors, (4628), 26 states have internal predecessors, (4628), 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) [2023-08-27 01:40:20,983 INFO L175 Difference]: Start difference. First operand has 74 places, 104 transitions, 1221 flow. Second operand 25 states and 2278 transitions. [2023-08-27 01:40:20,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 506 transitions, 4843 flow [2023-08-27 01:40:21,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 506 transitions, 4791 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 01:40:21,028 INFO L231 Difference]: Finished difference. Result has 117 places, 278 transitions, 4262 flow [2023-08-27 01:40:21,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4262, PETRI_PLACES=117, PETRI_TRANSITIONS=278} [2023-08-27 01:40:21,029 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2023-08-27 01:40:21,029 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 278 transitions, 4262 flow [2023-08-27 01:40:21,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 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) [2023-08-27 01:40:21,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:21,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:21,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:21,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 01:40:21,236 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:21,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:21,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1960209704, now seen corresponding path program 1 times [2023-08-27 01:40:21,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:21,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969533572] [2023-08-27 01:40:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:21,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:40:21,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969533572] [2023-08-27 01:40:21,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969533572] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862076710] [2023-08-27 01:40:21,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:21,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:21,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:21,309 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:21,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 01:40:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:21,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:40:21,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:40:21,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:40:21,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862076710] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:21,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:21,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-27 01:40:21,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633306260] [2023-08-27 01:40:21,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:21,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 01:40:21,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:21,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 01:40:21,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 01:40:21,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 178 [2023-08-27 01:40:21,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 278 transitions, 4262 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 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) [2023-08-27 01:40:21,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:21,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 178 [2023-08-27 01:40:21,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:22,164 INFO L124 PetriNetUnfolderBase]: 2570/4801 cut-off events. [2023-08-27 01:40:22,164 INFO L125 PetriNetUnfolderBase]: For 45443/45443 co-relation queries the response was YES. [2023-08-27 01:40:22,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24102 conditions, 4801 events. 2570/4801 cut-off events. For 45443/45443 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 29890 event pairs, 773 based on Foata normal form. 136/4828 useless extension candidates. Maximal degree in co-relation 24046. Up to 4531 conditions per place. [2023-08-27 01:40:22,203 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 312 selfloop transitions, 30 changer transitions 0/343 dead transitions. [2023-08-27 01:40:22,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 343 transitions, 5899 flow [2023-08-27 01:40:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:40:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:40:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 450 transitions. [2023-08-27 01:40:22,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42134831460674155 [2023-08-27 01:40:22,205 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 450 transitions. [2023-08-27 01:40:22,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 450 transitions. [2023-08-27 01:40:22,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:22,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 450 transitions. [2023-08-27 01:40:22,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 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) [2023-08-27 01:40:22,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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) [2023-08-27 01:40:22,208 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 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) [2023-08-27 01:40:22,208 INFO L175 Difference]: Start difference. First operand has 117 places, 278 transitions, 4262 flow. Second operand 6 states and 450 transitions. [2023-08-27 01:40:22,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 343 transitions, 5899 flow [2023-08-27 01:40:22,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 343 transitions, 5474 flow, removed 204 selfloop flow, removed 2 redundant places. [2023-08-27 01:40:22,341 INFO L231 Difference]: Finished difference. Result has 123 places, 303 transitions, 4484 flow [2023-08-27 01:40:22,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=3945, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4484, PETRI_PLACES=123, PETRI_TRANSITIONS=303} [2023-08-27 01:40:22,342 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2023-08-27 01:40:22,342 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 303 transitions, 4484 flow [2023-08-27 01:40:22,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 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) [2023-08-27 01:40:22,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:22,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:22,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:22,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 01:40:22,547 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:22,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:22,548 INFO L85 PathProgramCache]: Analyzing trace with hash 648048334, now seen corresponding path program 2 times [2023-08-27 01:40:22,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:22,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842970819] [2023-08-27 01:40:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:22,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:22,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:22,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842970819] [2023-08-27 01:40:22,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842970819] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:22,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631718872] [2023-08-27 01:40:22,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:40:22,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:22,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:22,768 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:22,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 01:40:22,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:40:22,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:40:22,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 01:40:22,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:23,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:23,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631718872] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:23,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:23,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 01:40:23,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285489880] [2023-08-27 01:40:23,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:23,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:40:23,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:23,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:40:23,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-08-27 01:40:23,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:40:23,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 303 transitions, 4484 flow. Second operand has 22 states, 22 states have (on average 61.90909090909091) internal successors, (1362), 22 states have internal predecessors, (1362), 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) [2023-08-27 01:40:23,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:23,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:40:23,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:25,225 INFO L124 PetriNetUnfolderBase]: 2663/4985 cut-off events. [2023-08-27 01:40:25,225 INFO L125 PetriNetUnfolderBase]: For 51326/51326 co-relation queries the response was YES. [2023-08-27 01:40:25,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25875 conditions, 4985 events. 2663/4985 cut-off events. For 51326/51326 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 31133 event pairs, 900 based on Foata normal form. 2/4876 useless extension candidates. Maximal degree in co-relation 25816. Up to 4735 conditions per place. [2023-08-27 01:40:25,268 INFO L140 encePairwiseOnDemand]: 166/178 looper letters, 332 selfloop transitions, 40 changer transitions 20/392 dead transitions. [2023-08-27 01:40:25,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 392 transitions, 6125 flow [2023-08-27 01:40:25,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 01:40:25,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 01:40:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1186 transitions. [2023-08-27 01:40:25,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3701622971285893 [2023-08-27 01:40:25,272 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1186 transitions. [2023-08-27 01:40:25,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1186 transitions. [2023-08-27 01:40:25,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:25,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1186 transitions. [2023-08-27 01:40:25,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 65.88888888888889) internal successors, (1186), 18 states have internal predecessors, (1186), 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) [2023-08-27 01:40:25,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 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) [2023-08-27 01:40:25,279 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 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) [2023-08-27 01:40:25,280 INFO L175 Difference]: Start difference. First operand has 123 places, 303 transitions, 4484 flow. Second operand 18 states and 1186 transitions. [2023-08-27 01:40:25,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 392 transitions, 6125 flow [2023-08-27 01:40:25,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 392 transitions, 6117 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-27 01:40:25,430 INFO L231 Difference]: Finished difference. Result has 151 places, 331 transitions, 5221 flow [2023-08-27 01:40:25,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=4480, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5221, PETRI_PLACES=151, PETRI_TRANSITIONS=331} [2023-08-27 01:40:25,432 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2023-08-27 01:40:25,432 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 331 transitions, 5221 flow [2023-08-27 01:40:25,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.90909090909091) internal successors, (1362), 22 states have internal predecessors, (1362), 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) [2023-08-27 01:40:25,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:25,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:25,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-27 01:40:25,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 01:40:25,637 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:25,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash 571032444, now seen corresponding path program 3 times [2023-08-27 01:40:25,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:25,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199357196] [2023-08-27 01:40:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:25,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:25,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:25,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:25,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199357196] [2023-08-27 01:40:25,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199357196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:25,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093747067] [2023-08-27 01:40:25,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:40:25,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:25,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:25,871 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:25,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 01:40:25,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:40:25,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:40:25,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 01:40:25,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:26,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:26,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093747067] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:26,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:26,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 01:40:26,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583540898] [2023-08-27 01:40:26,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:26,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:40:26,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:26,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:40:26,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-08-27 01:40:26,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:40:26,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 331 transitions, 5221 flow. Second operand has 22 states, 22 states have (on average 61.90909090909091) internal successors, (1362), 22 states have internal predecessors, (1362), 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) [2023-08-27 01:40:26,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:26,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:40:26,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:28,104 INFO L124 PetriNetUnfolderBase]: 2708/5088 cut-off events. [2023-08-27 01:40:28,105 INFO L125 PetriNetUnfolderBase]: For 62229/62229 co-relation queries the response was YES. [2023-08-27 01:40:28,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29471 conditions, 5088 events. 2708/5088 cut-off events. For 62229/62229 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 32135 event pairs, 897 based on Foata normal form. 4/5092 useless extension candidates. Maximal degree in co-relation 29399. Up to 4690 conditions per place. [2023-08-27 01:40:28,153 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 346 selfloop transitions, 54 changer transitions 30/430 dead transitions. [2023-08-27 01:40:28,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 430 transitions, 6828 flow [2023-08-27 01:40:28,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 01:40:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 01:40:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1332 transitions. [2023-08-27 01:40:28,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741573033707865 [2023-08-27 01:40:28,156 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1332 transitions. [2023-08-27 01:40:28,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1332 transitions. [2023-08-27 01:40:28,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:28,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1332 transitions. [2023-08-27 01:40:28,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 66.6) internal successors, (1332), 20 states have internal predecessors, (1332), 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) [2023-08-27 01:40:28,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 178.0) internal successors, (3738), 21 states have internal predecessors, (3738), 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) [2023-08-27 01:40:28,163 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 178.0) internal successors, (3738), 21 states have internal predecessors, (3738), 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) [2023-08-27 01:40:28,163 INFO L175 Difference]: Start difference. First operand has 151 places, 331 transitions, 5221 flow. Second operand 20 states and 1332 transitions. [2023-08-27 01:40:28,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 430 transitions, 6828 flow [2023-08-27 01:40:28,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 430 transitions, 6732 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-08-27 01:40:28,437 INFO L231 Difference]: Finished difference. Result has 173 places, 347 transitions, 5663 flow [2023-08-27 01:40:28,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=5164, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5663, PETRI_PLACES=173, PETRI_TRANSITIONS=347} [2023-08-27 01:40:28,438 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2023-08-27 01:40:28,438 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 347 transitions, 5663 flow [2023-08-27 01:40:28,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.90909090909091) internal successors, (1362), 22 states have internal predecessors, (1362), 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) [2023-08-27 01:40:28,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:28,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:28,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-27 01:40:28,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 01:40:28,644 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:28,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:28,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1008252341, now seen corresponding path program 1 times [2023-08-27 01:40:28,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:28,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350356274] [2023-08-27 01:40:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:28,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:40:28,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:28,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350356274] [2023-08-27 01:40:28,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350356274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:28,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892625043] [2023-08-27 01:40:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:28,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:28,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:28,685 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:28,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 01:40:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:28,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:40:28,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:40:28,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:40:28,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892625043] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:28,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:28,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-27 01:40:28,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775874956] [2023-08-27 01:40:28,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:28,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 01:40:28,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 01:40:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 01:40:28,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 178 [2023-08-27 01:40:28,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 347 transitions, 5663 flow. Second operand has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2023-08-27 01:40:28,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:28,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 178 [2023-08-27 01:40:28,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:29,639 INFO L124 PetriNetUnfolderBase]: 2646/4887 cut-off events. [2023-08-27 01:40:29,639 INFO L125 PetriNetUnfolderBase]: For 86428/86616 co-relation queries the response was YES. [2023-08-27 01:40:29,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30853 conditions, 4887 events. 2646/4887 cut-off events. For 86428/86616 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 31491 event pairs, 465 based on Foata normal form. 278/5141 useless extension candidates. Maximal degree in co-relation 30771. Up to 3035 conditions per place. [2023-08-27 01:40:29,680 INFO L140 encePairwiseOnDemand]: 173/178 looper letters, 483 selfloop transitions, 16 changer transitions 3/507 dead transitions. [2023-08-27 01:40:29,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 507 transitions, 9129 flow [2023-08-27 01:40:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:40:29,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:40:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2023-08-27 01:40:29,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3797752808988764 [2023-08-27 01:40:29,681 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2023-08-27 01:40:29,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2023-08-27 01:40:29,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:29,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2023-08-27 01:40:29,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 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) [2023-08-27 01:40:29,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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) [2023-08-27 01:40:29,683 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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) [2023-08-27 01:40:29,684 INFO L175 Difference]: Start difference. First operand has 173 places, 347 transitions, 5663 flow. Second operand 5 states and 338 transitions. [2023-08-27 01:40:29,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 507 transitions, 9129 flow [2023-08-27 01:40:29,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 507 transitions, 9067 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-27 01:40:29,919 INFO L231 Difference]: Finished difference. Result has 164 places, 344 transitions, 5612 flow [2023-08-27 01:40:29,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=5580, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5612, PETRI_PLACES=164, PETRI_TRANSITIONS=344} [2023-08-27 01:40:29,920 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2023-08-27 01:40:29,920 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 344 transitions, 5612 flow [2023-08-27 01:40:29,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.8) internal successors, (658), 10 states have internal predecessors, (658), 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) [2023-08-27 01:40:29,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:29,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:29,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:30,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 01:40:30,122 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:30,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1958628602, now seen corresponding path program 4 times [2023-08-27 01:40:30,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:30,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064124029] [2023-08-27 01:40:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:30,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:30,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:30,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064124029] [2023-08-27 01:40:30,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064124029] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:30,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329633033] [2023-08-27 01:40:30,328 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:40:30,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:30,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:30,330 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:30,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 01:40:30,406 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:40:30,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:40:30,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 01:40:30,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:30,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:30,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329633033] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:30,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:30,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 01:40:30,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072459357] [2023-08-27 01:40:30,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:30,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:40:30,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:30,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:40:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-08-27 01:40:30,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:40:30,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 344 transitions, 5612 flow. Second operand has 20 states, 20 states have (on average 61.75) internal successors, (1235), 20 states have internal predecessors, (1235), 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) [2023-08-27 01:40:30,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:30,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:40:30,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:33,345 INFO L124 PetriNetUnfolderBase]: 3741/7147 cut-off events. [2023-08-27 01:40:33,346 INFO L125 PetriNetUnfolderBase]: For 96393/96393 co-relation queries the response was YES. [2023-08-27 01:40:33,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42037 conditions, 7147 events. 3741/7147 cut-off events. For 96393/96393 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 49337 event pairs, 397 based on Foata normal form. 44/7191 useless extension candidates. Maximal degree in co-relation 41957. Up to 3989 conditions per place. [2023-08-27 01:40:33,422 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 412 selfloop transitions, 362 changer transitions 23/797 dead transitions. [2023-08-27 01:40:33,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 797 transitions, 13561 flow [2023-08-27 01:40:33,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-27 01:40:33,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-27 01:40:33,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2541 transitions. [2023-08-27 01:40:33,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36603284356093346 [2023-08-27 01:40:33,427 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2541 transitions. [2023-08-27 01:40:33,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2541 transitions. [2023-08-27 01:40:33,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:33,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2541 transitions. [2023-08-27 01:40:33,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 65.15384615384616) internal successors, (2541), 39 states have internal predecessors, (2541), 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) [2023-08-27 01:40:33,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 178.0) internal successors, (7120), 40 states have internal predecessors, (7120), 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) [2023-08-27 01:40:33,439 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 178.0) internal successors, (7120), 40 states have internal predecessors, (7120), 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) [2023-08-27 01:40:33,439 INFO L175 Difference]: Start difference. First operand has 164 places, 344 transitions, 5612 flow. Second operand 39 states and 2541 transitions. [2023-08-27 01:40:33,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 797 transitions, 13561 flow [2023-08-27 01:40:33,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 797 transitions, 13371 flow, removed 53 selfloop flow, removed 4 redundant places. [2023-08-27 01:40:33,699 INFO L231 Difference]: Finished difference. Result has 210 places, 616 transitions, 11751 flow [2023-08-27 01:40:33,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=5526, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=11751, PETRI_PLACES=210, PETRI_TRANSITIONS=616} [2023-08-27 01:40:33,700 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2023-08-27 01:40:33,700 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 616 transitions, 11751 flow [2023-08-27 01:40:33,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 61.75) internal successors, (1235), 20 states have internal predecessors, (1235), 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) [2023-08-27 01:40:33,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:33,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:33,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:33,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:33,909 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:33,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:33,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1720245634, now seen corresponding path program 5 times [2023-08-27 01:40:33,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:33,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870080563] [2023-08-27 01:40:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:33,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:34,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870080563] [2023-08-27 01:40:34,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870080563] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142742945] [2023-08-27 01:40:34,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:40:34,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:34,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:34,091 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:34,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 01:40:34,151 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:40:34,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:40:34,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 01:40:34,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:34,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:34,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142742945] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:34,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:34,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 01:40:34,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120824156] [2023-08-27 01:40:34,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:34,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:40:34,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:40:34,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-08-27 01:40:34,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:40:34,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 616 transitions, 11751 flow. Second operand has 20 states, 20 states have (on average 61.85) internal successors, (1237), 20 states have internal predecessors, (1237), 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) [2023-08-27 01:40:34,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:34,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:40:34,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:37,386 INFO L124 PetriNetUnfolderBase]: 3983/7663 cut-off events. [2023-08-27 01:40:37,386 INFO L125 PetriNetUnfolderBase]: For 115638/115638 co-relation queries the response was YES. [2023-08-27 01:40:37,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49301 conditions, 7663 events. 3983/7663 cut-off events. For 115638/115638 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 54174 event pairs, 407 based on Foata normal form. 53/7716 useless extension candidates. Maximal degree in co-relation 49209. Up to 3989 conditions per place. [2023-08-27 01:40:37,464 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 410 selfloop transitions, 431 changer transitions 22/863 dead transitions. [2023-08-27 01:40:37,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 863 transitions, 15872 flow [2023-08-27 01:40:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-27 01:40:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-27 01:40:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2298 transitions. [2023-08-27 01:40:37,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.368860353130016 [2023-08-27 01:40:37,469 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2298 transitions. [2023-08-27 01:40:37,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2298 transitions. [2023-08-27 01:40:37,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:37,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2298 transitions. [2023-08-27 01:40:37,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 65.65714285714286) internal successors, (2298), 35 states have internal predecessors, (2298), 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) [2023-08-27 01:40:37,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 178.0) internal successors, (6408), 36 states have internal predecessors, (6408), 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) [2023-08-27 01:40:37,481 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 178.0) internal successors, (6408), 36 states have internal predecessors, (6408), 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) [2023-08-27 01:40:37,481 INFO L175 Difference]: Start difference. First operand has 210 places, 616 transitions, 11751 flow. Second operand 35 states and 2298 transitions. [2023-08-27 01:40:37,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 863 transitions, 15872 flow [2023-08-27 01:40:38,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 863 transitions, 14439 flow, removed 673 selfloop flow, removed 8 redundant places. [2023-08-27 01:40:38,615 INFO L231 Difference]: Finished difference. Result has 240 places, 691 transitions, 12706 flow [2023-08-27 01:40:38,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=10500, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12706, PETRI_PLACES=240, PETRI_TRANSITIONS=691} [2023-08-27 01:40:38,615 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2023-08-27 01:40:38,616 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 691 transitions, 12706 flow [2023-08-27 01:40:38,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 61.85) internal successors, (1237), 20 states have internal predecessors, (1237), 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) [2023-08-27 01:40:38,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:38,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:38,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:38,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:38,822 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:38,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:38,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1683609748, now seen corresponding path program 6 times [2023-08-27 01:40:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:38,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146836183] [2023-08-27 01:40:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:38,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:38,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146836183] [2023-08-27 01:40:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146836183] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:38,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249005553] [2023-08-27 01:40:38,991 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:40:38,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:38,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:38,992 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:39,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 01:40:39,058 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:40:39,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:40:39,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 01:40:39,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:39,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:39,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249005553] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:39,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:39,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 01:40:39,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214374858] [2023-08-27 01:40:39,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:39,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:40:39,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:40:39,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2023-08-27 01:40:39,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:40:39,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 691 transitions, 12706 flow. Second operand has 22 states, 22 states have (on average 61.95454545454545) internal successors, (1363), 22 states have internal predecessors, (1363), 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) [2023-08-27 01:40:39,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:39,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:40:39,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:41,854 INFO L124 PetriNetUnfolderBase]: 3824/7236 cut-off events. [2023-08-27 01:40:41,854 INFO L125 PetriNetUnfolderBase]: For 96571/96571 co-relation queries the response was YES. [2023-08-27 01:40:41,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43878 conditions, 7236 events. 3824/7236 cut-off events. For 96571/96571 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 49291 event pairs, 752 based on Foata normal form. 1/7237 useless extension candidates. Maximal degree in co-relation 43782. Up to 6805 conditions per place. [2023-08-27 01:40:41,928 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 644 selfloop transitions, 88 changer transitions 20/752 dead transitions. [2023-08-27 01:40:41,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 752 transitions, 14482 flow [2023-08-27 01:40:41,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 01:40:41,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 01:40:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1193 transitions. [2023-08-27 01:40:41,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723470661672909 [2023-08-27 01:40:41,930 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1193 transitions. [2023-08-27 01:40:41,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1193 transitions. [2023-08-27 01:40:41,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:41,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1193 transitions. [2023-08-27 01:40:41,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.27777777777777) internal successors, (1193), 18 states have internal predecessors, (1193), 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) [2023-08-27 01:40:41,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 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) [2023-08-27 01:40:41,936 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 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) [2023-08-27 01:40:41,936 INFO L175 Difference]: Start difference. First operand has 240 places, 691 transitions, 12706 flow. Second operand 18 states and 1193 transitions. [2023-08-27 01:40:41,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 752 transitions, 14482 flow [2023-08-27 01:40:42,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 752 transitions, 13620 flow, removed 252 selfloop flow, removed 17 redundant places. [2023-08-27 01:40:42,601 INFO L231 Difference]: Finished difference. Result has 238 places, 692 transitions, 12081 flow [2023-08-27 01:40:42,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=11860, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12081, PETRI_PLACES=238, PETRI_TRANSITIONS=692} [2023-08-27 01:40:42,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2023-08-27 01:40:42,602 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 692 transitions, 12081 flow [2023-08-27 01:40:42,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.95454545454545) internal successors, (1363), 22 states have internal predecessors, (1363), 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) [2023-08-27 01:40:42,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:42,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:42,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:42,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:42,803 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:42,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:42,804 INFO L85 PathProgramCache]: Analyzing trace with hash 979368856, now seen corresponding path program 7 times [2023-08-27 01:40:42,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:42,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654589702] [2023-08-27 01:40:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:42,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:42,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:42,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:42,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654589702] [2023-08-27 01:40:42,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654589702] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:42,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185760893] [2023-08-27 01:40:42,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:40:42,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:42,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:42,998 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:43,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 01:40:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:43,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 01:40:43,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:43,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:43,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185760893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:43,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:43,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 01:40:43,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628776082] [2023-08-27 01:40:43,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:43,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:40:43,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:43,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:40:43,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:40:43,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:40:43,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 692 transitions, 12081 flow. Second operand has 19 states, 19 states have (on average 61.8421052631579) internal successors, (1175), 19 states have internal predecessors, (1175), 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) [2023-08-27 01:40:43,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:43,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:40:43,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:46,953 INFO L124 PetriNetUnfolderBase]: 5117/9875 cut-off events. [2023-08-27 01:40:46,953 INFO L125 PetriNetUnfolderBase]: For 128115/128115 co-relation queries the response was YES. [2023-08-27 01:40:47,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57683 conditions, 9875 events. 5117/9875 cut-off events. For 128115/128115 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 72990 event pairs, 771 based on Foata normal form. 41/9916 useless extension candidates. Maximal degree in co-relation 57589. Up to 7081 conditions per place. [2023-08-27 01:40:47,032 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 750 selfloop transitions, 336 changer transitions 27/1113 dead transitions. [2023-08-27 01:40:47,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1113 transitions, 20477 flow [2023-08-27 01:40:47,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-27 01:40:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-27 01:40:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2340 transitions. [2023-08-27 01:40:47,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3651685393258427 [2023-08-27 01:40:47,036 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2340 transitions. [2023-08-27 01:40:47,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2340 transitions. [2023-08-27 01:40:47,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:47,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2340 transitions. [2023-08-27 01:40:47,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 65.0) internal successors, (2340), 36 states have internal predecessors, (2340), 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) [2023-08-27 01:40:47,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 178.0) internal successors, (6586), 37 states have internal predecessors, (6586), 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) [2023-08-27 01:40:47,046 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 178.0) internal successors, (6586), 37 states have internal predecessors, (6586), 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) [2023-08-27 01:40:47,046 INFO L175 Difference]: Start difference. First operand has 238 places, 692 transitions, 12081 flow. Second operand 36 states and 2340 transitions. [2023-08-27 01:40:47,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1113 transitions, 20477 flow [2023-08-27 01:40:47,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 1113 transitions, 20245 flow, removed 51 selfloop flow, removed 12 redundant places. [2023-08-27 01:40:47,646 INFO L231 Difference]: Finished difference. Result has 270 places, 949 transitions, 18213 flow [2023-08-27 01:40:47,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=11902, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=18213, PETRI_PLACES=270, PETRI_TRANSITIONS=949} [2023-08-27 01:40:47,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2023-08-27 01:40:47,647 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 949 transitions, 18213 flow [2023-08-27 01:40:47,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 61.8421052631579) internal successors, (1175), 19 states have internal predecessors, (1175), 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) [2023-08-27 01:40:47,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:47,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:47,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:47,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:47,848 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:47,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:47,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1038315540, now seen corresponding path program 8 times [2023-08-27 01:40:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:47,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148658271] [2023-08-27 01:40:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:48,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:48,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148658271] [2023-08-27 01:40:48,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148658271] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:48,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522335041] [2023-08-27 01:40:48,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:40:48,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:48,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:48,003 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:48,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 01:40:48,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:40:48,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:40:48,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 01:40:48,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:48,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:48,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522335041] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:48,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:48,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 01:40:48,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479771122] [2023-08-27 01:40:48,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:48,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:40:48,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:48,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:40:48,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2023-08-27 01:40:48,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:40:48,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 949 transitions, 18213 flow. Second operand has 22 states, 22 states have (on average 61.95454545454545) internal successors, (1363), 22 states have internal predecessors, (1363), 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) [2023-08-27 01:40:48,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:48,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:40:48,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:52,216 INFO L124 PetriNetUnfolderBase]: 5035/9581 cut-off events. [2023-08-27 01:40:52,216 INFO L125 PetriNetUnfolderBase]: For 148935/148935 co-relation queries the response was YES. [2023-08-27 01:40:52,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62147 conditions, 9581 events. 5035/9581 cut-off events. For 148935/148935 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 69167 event pairs, 952 based on Foata normal form. 2/9583 useless extension candidates. Maximal degree in co-relation 62040. Up to 9152 conditions per place. [2023-08-27 01:40:52,387 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 890 selfloop transitions, 95 changer transitions 20/1005 dead transitions. [2023-08-27 01:40:52,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 1005 transitions, 20531 flow [2023-08-27 01:40:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 01:40:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 01:40:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1057 transitions. [2023-08-27 01:40:52,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3711376404494382 [2023-08-27 01:40:52,390 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1057 transitions. [2023-08-27 01:40:52,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1057 transitions. [2023-08-27 01:40:52,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:52,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1057 transitions. [2023-08-27 01:40:52,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 66.0625) internal successors, (1057), 16 states have internal predecessors, (1057), 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) [2023-08-27 01:40:52,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 178.0) internal successors, (3026), 17 states have internal predecessors, (3026), 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) [2023-08-27 01:40:52,395 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 178.0) internal successors, (3026), 17 states have internal predecessors, (3026), 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) [2023-08-27 01:40:52,395 INFO L175 Difference]: Start difference. First operand has 270 places, 949 transitions, 18213 flow. Second operand 16 states and 1057 transitions. [2023-08-27 01:40:52,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 1005 transitions, 20531 flow [2023-08-27 01:40:53,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 1005 transitions, 20014 flow, removed 223 selfloop flow, removed 11 redundant places. [2023-08-27 01:40:53,394 INFO L231 Difference]: Finished difference. Result has 277 places, 951 transitions, 17967 flow [2023-08-27 01:40:53,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=17721, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=949, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=856, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=17967, PETRI_PLACES=277, PETRI_TRANSITIONS=951} [2023-08-27 01:40:53,396 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2023-08-27 01:40:53,396 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 951 transitions, 17967 flow [2023-08-27 01:40:53,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.95454545454545) internal successors, (1363), 22 states have internal predecessors, (1363), 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) [2023-08-27 01:40:53,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:53,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:53,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:53,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:53,597 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:53,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2039096026, now seen corresponding path program 9 times [2023-08-27 01:40:53,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:53,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727686034] [2023-08-27 01:40:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:53,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:53,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727686034] [2023-08-27 01:40:53,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727686034] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:53,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939884854] [2023-08-27 01:40:53,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:40:53,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:53,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:53,765 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:53,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 01:40:53,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 01:40:53,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:40:53,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 01:40:53,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:54,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:54,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939884854] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:54,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:54,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 01:40:54,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914324953] [2023-08-27 01:40:54,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:54,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:40:54,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:54,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:40:54,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-08-27 01:40:54,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:40:54,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 951 transitions, 17967 flow. Second operand has 22 states, 22 states have (on average 61.86363636363637) internal successors, (1361), 22 states have internal predecessors, (1361), 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) [2023-08-27 01:40:54,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:54,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:40:54,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:40:57,987 INFO L124 PetriNetUnfolderBase]: 5008/9526 cut-off events. [2023-08-27 01:40:57,988 INFO L125 PetriNetUnfolderBase]: For 150727/150727 co-relation queries the response was YES. [2023-08-27 01:40:58,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61693 conditions, 9526 events. 5008/9526 cut-off events. For 150727/150727 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 68653 event pairs, 944 based on Foata normal form. 1/9527 useless extension candidates. Maximal degree in co-relation 61581. Up to 9124 conditions per place. [2023-08-27 01:40:58,080 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 880 selfloop transitions, 107 changer transitions 9/996 dead transitions. [2023-08-27 01:40:58,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 996 transitions, 20247 flow [2023-08-27 01:40:58,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 01:40:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 01:40:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1166 transitions. [2023-08-27 01:40:58,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36392009987515606 [2023-08-27 01:40:58,082 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1166 transitions. [2023-08-27 01:40:58,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1166 transitions. [2023-08-27 01:40:58,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:58,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1166 transitions. [2023-08-27 01:40:58,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 64.77777777777777) internal successors, (1166), 18 states have internal predecessors, (1166), 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) [2023-08-27 01:40:58,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 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) [2023-08-27 01:40:58,085 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 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) [2023-08-27 01:40:58,085 INFO L175 Difference]: Start difference. First operand has 277 places, 951 transitions, 17967 flow. Second operand 18 states and 1166 transitions. [2023-08-27 01:40:58,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 996 transitions, 20247 flow [2023-08-27 01:40:59,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 996 transitions, 19975 flow, removed 43 selfloop flow, removed 17 redundant places. [2023-08-27 01:40:59,315 INFO L231 Difference]: Finished difference. Result has 274 places, 957 transitions, 18096 flow [2023-08-27 01:40:59,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=17706, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=951, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=18096, PETRI_PLACES=274, PETRI_TRANSITIONS=957} [2023-08-27 01:40:59,316 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2023-08-27 01:40:59,317 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 957 transitions, 18096 flow [2023-08-27 01:40:59,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.86363636363637) internal successors, (1361), 22 states have internal predecessors, (1361), 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) [2023-08-27 01:40:59,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:59,317 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:59,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:59,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:59,526 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:40:59,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:59,526 INFO L85 PathProgramCache]: Analyzing trace with hash -662935337, now seen corresponding path program 10 times [2023-08-27 01:40:59,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:59,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634065142] [2023-08-27 01:40:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:59,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:59,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:59,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634065142] [2023-08-27 01:40:59,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634065142] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:59,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069325762] [2023-08-27 01:40:59,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:40:59,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:59,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:59,746 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:59,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 01:40:59,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:40:59,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:40:59,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 01:40:59,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:40:59,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:41:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:00,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069325762] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:41:00,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:41:00,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-27 01:41:00,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512070275] [2023-08-27 01:41:00,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:41:00,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 01:41:00,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:41:00,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 01:41:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2023-08-27 01:41:00,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:41:00,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 957 transitions, 18096 flow. Second operand has 23 states, 23 states have (on average 61.73913043478261) internal successors, (1420), 23 states have internal predecessors, (1420), 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) [2023-08-27 01:41:00,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:41:00,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:41:00,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:41:04,270 INFO L124 PetriNetUnfolderBase]: 5310/10278 cut-off events. [2023-08-27 01:41:04,270 INFO L125 PetriNetUnfolderBase]: For 155719/155719 co-relation queries the response was YES. [2023-08-27 01:41:04,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64618 conditions, 10278 events. 5310/10278 cut-off events. For 155719/155719 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 76930 event pairs, 509 based on Foata normal form. 39/10317 useless extension candidates. Maximal degree in co-relation 64515. Up to 7802 conditions per place. [2023-08-27 01:41:04,358 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 703 selfloop transitions, 342 changer transitions 81/1126 dead transitions. [2023-08-27 01:41:04,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 1126 transitions, 22043 flow [2023-08-27 01:41:04,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-27 01:41:04,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-27 01:41:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2079 transitions. [2023-08-27 01:41:04,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3649929775280899 [2023-08-27 01:41:04,362 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2079 transitions. [2023-08-27 01:41:04,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2079 transitions. [2023-08-27 01:41:04,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:41:04,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2079 transitions. [2023-08-27 01:41:04,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 64.96875) internal successors, (2079), 32 states have internal predecessors, (2079), 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) [2023-08-27 01:41:04,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-08-27 01:41:04,371 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 178.0) internal successors, (5874), 33 states have internal predecessors, (5874), 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) [2023-08-27 01:41:04,371 INFO L175 Difference]: Start difference. First operand has 274 places, 957 transitions, 18096 flow. Second operand 32 states and 2079 transitions. [2023-08-27 01:41:04,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 1126 transitions, 22043 flow [2023-08-27 01:41:05,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 1126 transitions, 21574 flow, removed 34 selfloop flow, removed 17 redundant places. [2023-08-27 01:41:05,440 INFO L231 Difference]: Finished difference. Result has 293 places, 963 transitions, 18639 flow [2023-08-27 01:41:05,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=17656, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=18639, PETRI_PLACES=293, PETRI_TRANSITIONS=963} [2023-08-27 01:41:05,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2023-08-27 01:41:05,441 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 963 transitions, 18639 flow [2023-08-27 01:41:05,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 61.73913043478261) internal successors, (1420), 23 states have internal predecessors, (1420), 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) [2023-08-27 01:41:05,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:41:05,442 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:41:05,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 01:41:05,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 01:41:05,648 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:41:05,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:41:05,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1337260007, now seen corresponding path program 11 times [2023-08-27 01:41:05,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:41:05,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48431403] [2023-08-27 01:41:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:41:05,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:41:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:41:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:05,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:41:05,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48431403] [2023-08-27 01:41:05,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48431403] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:41:05,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671617695] [2023-08-27 01:41:05,827 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:41:05,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:41:05,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:41:05,829 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:41:05,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 01:41:05,910 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:41:05,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:41:05,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 01:41:05,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:41:06,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:06,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:41:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671617695] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:41:06,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:41:06,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-27 01:41:06,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625759701] [2023-08-27 01:41:06,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:41:06,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 01:41:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:41:06,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 01:41:06,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-08-27 01:41:06,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:41:06,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 963 transitions, 18639 flow. Second operand has 23 states, 23 states have (on average 61.73913043478261) internal successors, (1420), 23 states have internal predecessors, (1420), 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) [2023-08-27 01:41:06,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:41:06,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:41:06,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:41:11,142 INFO L124 PetriNetUnfolderBase]: 6290/12073 cut-off events. [2023-08-27 01:41:11,142 INFO L125 PetriNetUnfolderBase]: For 213227/213227 co-relation queries the response was YES. [2023-08-27 01:41:11,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79219 conditions, 12073 events. 6290/12073 cut-off events. For 213227/213227 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 92068 event pairs, 505 based on Foata normal form. 58/12131 useless extension candidates. Maximal degree in co-relation 79114. Up to 7907 conditions per place. [2023-08-27 01:41:11,251 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 780 selfloop transitions, 496 changer transitions 176/1452 dead transitions. [2023-08-27 01:41:11,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1452 transitions, 28633 flow [2023-08-27 01:41:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-27 01:41:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-27 01:41:11,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2534 transitions. [2023-08-27 01:41:11,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36502448861999426 [2023-08-27 01:41:11,254 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2534 transitions. [2023-08-27 01:41:11,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2534 transitions. [2023-08-27 01:41:11,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:41:11,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2534 transitions. [2023-08-27 01:41:11,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 64.97435897435898) internal successors, (2534), 39 states have internal predecessors, (2534), 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) [2023-08-27 01:41:11,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 178.0) internal successors, (7120), 40 states have internal predecessors, (7120), 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) [2023-08-27 01:41:11,262 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 178.0) internal successors, (7120), 40 states have internal predecessors, (7120), 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) [2023-08-27 01:41:11,263 INFO L175 Difference]: Start difference. First operand has 293 places, 963 transitions, 18639 flow. Second operand 39 states and 2534 transitions. [2023-08-27 01:41:11,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1452 transitions, 28633 flow [2023-08-27 01:41:13,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 1452 transitions, 28117 flow, removed 157 selfloop flow, removed 16 redundant places. [2023-08-27 01:41:13,108 INFO L231 Difference]: Finished difference. Result has 319 places, 1109 transitions, 23126 flow [2023-08-27 01:41:13,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=18191, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=23126, PETRI_PLACES=319, PETRI_TRANSITIONS=1109} [2023-08-27 01:41:13,110 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2023-08-27 01:41:13,110 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 1109 transitions, 23126 flow [2023-08-27 01:41:13,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 61.73913043478261) internal successors, (1420), 23 states have internal predecessors, (1420), 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) [2023-08-27 01:41:13,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:41:13,111 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:41:13,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 01:41:13,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 01:41:13,319 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:41:13,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:41:13,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1534773799, now seen corresponding path program 12 times [2023-08-27 01:41:13,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:41:13,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042610354] [2023-08-27 01:41:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:41:13,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:41:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:41:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:13,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:41:13,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042610354] [2023-08-27 01:41:13,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042610354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:41:13,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726518020] [2023-08-27 01:41:13,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:41:13,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:41:13,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:41:13,488 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:41:13,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 01:41:13,561 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 01:41:13,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:41:13,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 01:41:13,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:41:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:13,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:41:14,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:14,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726518020] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:41:14,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:41:14,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 01:41:14,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250145131] [2023-08-27 01:41:14,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:41:14,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:41:14,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:41:14,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:41:14,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:41:14,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:41:14,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 1109 transitions, 23126 flow. Second operand has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 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) [2023-08-27 01:41:14,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:41:14,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:41:14,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:41:20,688 INFO L124 PetriNetUnfolderBase]: 5867/11372 cut-off events. [2023-08-27 01:41:20,688 INFO L125 PetriNetUnfolderBase]: For 223627/223627 co-relation queries the response was YES. [2023-08-27 01:41:20,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78010 conditions, 11372 events. 5867/11372 cut-off events. For 223627/223627 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 86445 event pairs, 926 based on Foata normal form. 34/11406 useless extension candidates. Maximal degree in co-relation 77901. Up to 9262 conditions per place. [2023-08-27 01:41:20,837 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 952 selfloop transitions, 466 changer transitions 20/1438 dead transitions. [2023-08-27 01:41:20,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 1438 transitions, 29620 flow [2023-08-27 01:41:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-27 01:41:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-27 01:41:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3716 transitions. [2023-08-27 01:41:20,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35993800852382796 [2023-08-27 01:41:20,843 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3716 transitions. [2023-08-27 01:41:20,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3716 transitions. [2023-08-27 01:41:20,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:41:20,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3716 transitions. [2023-08-27 01:41:20,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 64.06896551724138) internal successors, (3716), 58 states have internal predecessors, (3716), 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) [2023-08-27 01:41:20,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 178.0) internal successors, (10502), 59 states have internal predecessors, (10502), 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) [2023-08-27 01:41:20,861 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 178.0) internal successors, (10502), 59 states have internal predecessors, (10502), 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) [2023-08-27 01:41:20,862 INFO L175 Difference]: Start difference. First operand has 319 places, 1109 transitions, 23126 flow. Second operand 58 states and 3716 transitions. [2023-08-27 01:41:20,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 1438 transitions, 29620 flow [2023-08-27 01:41:22,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1438 transitions, 28943 flow, removed 134 selfloop flow, removed 20 redundant places. [2023-08-27 01:41:22,826 INFO L231 Difference]: Finished difference. Result has 361 places, 1209 transitions, 25530 flow [2023-08-27 01:41:22,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=22492, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=369, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=25530, PETRI_PLACES=361, PETRI_TRANSITIONS=1209} [2023-08-27 01:41:22,827 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2023-08-27 01:41:22,828 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 1209 transitions, 25530 flow [2023-08-27 01:41:22,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 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) [2023-08-27 01:41:22,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:41:22,828 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:41:22,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 01:41:23,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 01:41:23,029 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:41:23,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:41:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash 233312003, now seen corresponding path program 13 times [2023-08-27 01:41:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:41:23,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43020636] [2023-08-27 01:41:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:41:23,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:41:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:41:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:23,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:41:23,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43020636] [2023-08-27 01:41:23,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43020636] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:41:23,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745327206] [2023-08-27 01:41:23,205 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:41:23,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:41:23,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:41:23,209 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:41:23,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 01:41:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:41:23,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 01:41:23,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:41:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:23,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:41:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:23,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745327206] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:41:23,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:41:23,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-27 01:41:23,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373515026] [2023-08-27 01:41:23,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:41:23,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 01:41:23,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:41:23,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 01:41:23,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-08-27 01:41:23,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:41:23,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 1209 transitions, 25530 flow. Second operand has 23 states, 23 states have (on average 61.73913043478261) internal successors, (1420), 23 states have internal predecessors, (1420), 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) [2023-08-27 01:41:23,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:41:23,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:41:23,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:41:30,878 INFO L124 PetriNetUnfolderBase]: 7930/15372 cut-off events. [2023-08-27 01:41:30,878 INFO L125 PetriNetUnfolderBase]: For 303867/303867 co-relation queries the response was YES. [2023-08-27 01:41:31,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108673 conditions, 15372 events. 7930/15372 cut-off events. For 303867/303867 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 123901 event pairs, 675 based on Foata normal form. 135/15507 useless extension candidates. Maximal degree in co-relation 108559. Up to 6218 conditions per place. [2023-08-27 01:41:31,047 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 672 selfloop transitions, 881 changer transitions 304/1857 dead transitions. [2023-08-27 01:41:31,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1857 transitions, 40389 flow [2023-08-27 01:41:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-27 01:41:31,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-27 01:41:31,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 3233 transitions. [2023-08-27 01:41:31,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3632584269662921 [2023-08-27 01:41:31,051 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 3233 transitions. [2023-08-27 01:41:31,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 3233 transitions. [2023-08-27 01:41:31,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:41:31,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 3233 transitions. [2023-08-27 01:41:31,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 64.66) internal successors, (3233), 50 states have internal predecessors, (3233), 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) [2023-08-27 01:41:31,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 178.0) internal successors, (9078), 51 states have internal predecessors, (9078), 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) [2023-08-27 01:41:31,062 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 178.0) internal successors, (9078), 51 states have internal predecessors, (9078), 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) [2023-08-27 01:41:31,062 INFO L175 Difference]: Start difference. First operand has 361 places, 1209 transitions, 25530 flow. Second operand 50 states and 3233 transitions. [2023-08-27 01:41:31,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1857 transitions, 40389 flow [2023-08-27 01:41:34,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 1857 transitions, 39033 flow, removed 323 selfloop flow, removed 33 redundant places. [2023-08-27 01:41:34,409 INFO L231 Difference]: Finished difference. Result has 385 places, 1354 transitions, 31829 flow [2023-08-27 01:41:34,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=24365, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=597, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=31829, PETRI_PLACES=385, PETRI_TRANSITIONS=1354} [2023-08-27 01:41:34,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2023-08-27 01:41:34,410 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1354 transitions, 31829 flow [2023-08-27 01:41:34,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 61.73913043478261) internal successors, (1420), 23 states have internal predecessors, (1420), 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) [2023-08-27 01:41:34,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:41:34,411 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:41:34,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 01:41:34,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:41:34,616 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:41:34,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:41:34,616 INFO L85 PathProgramCache]: Analyzing trace with hash -386799797, now seen corresponding path program 14 times [2023-08-27 01:41:34,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:41:34,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139926274] [2023-08-27 01:41:34,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:41:34,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:41:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:41:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:34,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:41:34,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139926274] [2023-08-27 01:41:34,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139926274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:41:34,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687640065] [2023-08-27 01:41:34,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:41:34,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:41:34,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:41:34,780 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:41:34,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 01:41:34,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:41:34,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:41:34,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 01:41:34,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:41:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:35,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:41:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:35,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687640065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:41:35,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:41:35,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 01:41:35,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94550110] [2023-08-27 01:41:35,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:41:35,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:41:35,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:41:35,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:41:35,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:41:35,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:41:35,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1354 transitions, 31829 flow. Second operand has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 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) [2023-08-27 01:41:35,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:41:35,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:41:35,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:41:44,611 INFO L124 PetriNetUnfolderBase]: 6549/13505 cut-off events. [2023-08-27 01:41:44,611 INFO L125 PetriNetUnfolderBase]: For 311918/311918 co-relation queries the response was YES. [2023-08-27 01:41:44,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103435 conditions, 13505 events. 6549/13505 cut-off events. For 311918/311918 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 113064 event pairs, 896 based on Foata normal form. 53/13558 useless extension candidates. Maximal degree in co-relation 103318. Up to 8961 conditions per place. [2023-08-27 01:41:44,749 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 1108 selfloop transitions, 682 changer transitions 34/1824 dead transitions. [2023-08-27 01:41:44,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1824 transitions, 42246 flow [2023-08-27 01:41:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-08-27 01:41:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-08-27 01:41:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 4692 transitions. [2023-08-27 01:41:44,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36108973372325687 [2023-08-27 01:41:44,753 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 4692 transitions. [2023-08-27 01:41:44,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 4692 transitions. [2023-08-27 01:41:44,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:41:44,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 4692 transitions. [2023-08-27 01:41:44,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 64.27397260273973) internal successors, (4692), 73 states have internal predecessors, (4692), 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) [2023-08-27 01:41:44,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 178.0) internal successors, (13172), 74 states have internal predecessors, (13172), 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) [2023-08-27 01:41:44,768 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 178.0) internal successors, (13172), 74 states have internal predecessors, (13172), 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) [2023-08-27 01:41:44,769 INFO L175 Difference]: Start difference. First operand has 385 places, 1354 transitions, 31829 flow. Second operand 73 states and 4692 transitions. [2023-08-27 01:41:44,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1824 transitions, 42246 flow [2023-08-27 01:41:47,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 1824 transitions, 40708 flow, removed 433 selfloop flow, removed 35 redundant places. [2023-08-27 01:41:47,847 INFO L231 Difference]: Finished difference. Result has 434 places, 1515 transitions, 35118 flow [2023-08-27 01:41:47,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=30395, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=747, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=35118, PETRI_PLACES=434, PETRI_TRANSITIONS=1515} [2023-08-27 01:41:47,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2023-08-27 01:41:47,848 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 1515 transitions, 35118 flow [2023-08-27 01:41:47,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 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) [2023-08-27 01:41:47,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:41:47,849 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:41:47,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 01:41:48,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 01:41:48,050 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:41:48,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:41:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash -414505427, now seen corresponding path program 15 times [2023-08-27 01:41:48,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:41:48,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048039120] [2023-08-27 01:41:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:41:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:41:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:41:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:48,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:41:48,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048039120] [2023-08-27 01:41:48,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048039120] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:41:48,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875038527] [2023-08-27 01:41:48,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:41:48,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:41:48,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:41:48,217 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:41:48,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 01:41:48,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 01:41:48,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:41:48,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 01:41:48,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:41:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:48,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:41:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:41:48,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875038527] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:41:48,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:41:48,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 01:41:48,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570129064] [2023-08-27 01:41:48,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:41:48,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:41:48,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:41:48,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:41:48,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:41:48,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:41:48,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 1515 transitions, 35118 flow. Second operand has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 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) [2023-08-27 01:41:48,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:41:48,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:41:48,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:41:58,429 INFO L124 PetriNetUnfolderBase]: 6320/12932 cut-off events. [2023-08-27 01:41:58,429 INFO L125 PetriNetUnfolderBase]: For 325433/325433 co-relation queries the response was YES. [2023-08-27 01:41:58,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107755 conditions, 12932 events. 6320/12932 cut-off events. For 325433/325433 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 106399 event pairs, 884 based on Foata normal form. 51/12983 useless extension candidates. Maximal degree in co-relation 107625. Up to 8961 conditions per place. [2023-08-27 01:41:58,566 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 969 selfloop transitions, 744 changer transitions 15/1728 dead transitions. [2023-08-27 01:41:58,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1728 transitions, 40975 flow [2023-08-27 01:41:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-08-27 01:41:58,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-08-27 01:41:58,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 4168 transitions. [2023-08-27 01:41:58,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602420051858254 [2023-08-27 01:41:58,572 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 4168 transitions. [2023-08-27 01:41:58,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 4168 transitions. [2023-08-27 01:41:58,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:41:58,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 4168 transitions. [2023-08-27 01:41:58,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 64.12307692307692) internal successors, (4168), 65 states have internal predecessors, (4168), 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) [2023-08-27 01:41:58,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 178.0) internal successors, (11748), 66 states have internal predecessors, (11748), 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) [2023-08-27 01:41:58,585 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 178.0) internal successors, (11748), 66 states have internal predecessors, (11748), 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) [2023-08-27 01:41:58,585 INFO L175 Difference]: Start difference. First operand has 434 places, 1515 transitions, 35118 flow. Second operand 65 states and 4168 transitions. [2023-08-27 01:41:58,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1728 transitions, 40975 flow [2023-08-27 01:42:02,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1728 transitions, 40134 flow, removed 197 selfloop flow, removed 39 redundant places. [2023-08-27 01:42:02,490 INFO L231 Difference]: Finished difference. Result has 455 places, 1515 transitions, 36191 flow [2023-08-27 01:42:02,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=34310, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=737, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=773, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=36191, PETRI_PLACES=455, PETRI_TRANSITIONS=1515} [2023-08-27 01:42:02,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 425 predicate places. [2023-08-27 01:42:02,491 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 1515 transitions, 36191 flow [2023-08-27 01:42:02,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 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) [2023-08-27 01:42:02,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:42:02,492 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:42:02,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-27 01:42:02,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:42:02,692 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:42:02,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:42:02,693 INFO L85 PathProgramCache]: Analyzing trace with hash 235701973, now seen corresponding path program 16 times [2023-08-27 01:42:02,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:42:02,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500412462] [2023-08-27 01:42:02,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:42:02,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:42:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:42:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:42:02,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:42:02,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500412462] [2023-08-27 01:42:02,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500412462] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:42:02,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375715688] [2023-08-27 01:42:02,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:42:02,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:42:02,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:42:02,881 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:42:02,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 01:42:02,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:42:02,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:42:02,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 01:42:02,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:42:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:42:03,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:42:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:42:03,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375715688] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:42:03,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:42:03,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-27 01:42:03,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926641282] [2023-08-27 01:42:03,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:42:03,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:42:03,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:42:03,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:42:03,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2023-08-27 01:42:03,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:42:03,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 1515 transitions, 36191 flow. Second operand has 22 states, 22 states have (on average 61.77272727272727) internal successors, (1359), 22 states have internal predecessors, (1359), 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) [2023-08-27 01:42:03,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:42:03,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:42:03,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:42:12,182 INFO L124 PetriNetUnfolderBase]: 8002/16089 cut-off events. [2023-08-27 01:42:12,182 INFO L125 PetriNetUnfolderBase]: For 404200/404200 co-relation queries the response was YES. [2023-08-27 01:42:12,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133974 conditions, 16089 events. 8002/16089 cut-off events. For 404200/404200 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 135900 event pairs, 795 based on Foata normal form. 94/16183 useless extension candidates. Maximal degree in co-relation 133844. Up to 10441 conditions per place. [2023-08-27 01:42:12,360 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 1297 selfloop transitions, 668 changer transitions 30/1995 dead transitions. [2023-08-27 01:42:12,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1995 transitions, 48461 flow [2023-08-27 01:42:12,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 01:42:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-27 01:42:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3055 transitions. [2023-08-27 01:42:12,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3651685393258427 [2023-08-27 01:42:12,363 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3055 transitions. [2023-08-27 01:42:12,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3055 transitions. [2023-08-27 01:42:12,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:42:12,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3055 transitions. [2023-08-27 01:42:12,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 65.0) internal successors, (3055), 47 states have internal predecessors, (3055), 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) [2023-08-27 01:42:12,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 178.0) internal successors, (8544), 48 states have internal predecessors, (8544), 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) [2023-08-27 01:42:12,373 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 178.0) internal successors, (8544), 48 states have internal predecessors, (8544), 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) [2023-08-27 01:42:12,373 INFO L175 Difference]: Start difference. First operand has 455 places, 1515 transitions, 36191 flow. Second operand 47 states and 3055 transitions. [2023-08-27 01:42:12,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1995 transitions, 48461 flow [2023-08-27 01:42:16,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 1995 transitions, 47407 flow, removed 102 selfloop flow, removed 47 redundant places. [2023-08-27 01:42:16,882 INFO L231 Difference]: Finished difference. Result has 466 places, 1790 transitions, 43860 flow [2023-08-27 01:42:16,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=35213, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=968, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=43860, PETRI_PLACES=466, PETRI_TRANSITIONS=1790} [2023-08-27 01:42:16,883 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 436 predicate places. [2023-08-27 01:42:16,883 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 1790 transitions, 43860 flow [2023-08-27 01:42:16,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.77272727272727) internal successors, (1359), 22 states have internal predecessors, (1359), 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) [2023-08-27 01:42:16,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:42:16,884 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:42:16,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 01:42:17,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-27 01:42:17,084 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:42:17,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:42:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1538832135, now seen corresponding path program 17 times [2023-08-27 01:42:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:42:17,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857817651] [2023-08-27 01:42:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:42:17,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:42:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:42:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:42:17,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:42:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857817651] [2023-08-27 01:42:17,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857817651] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:42:17,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13667853] [2023-08-27 01:42:17,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:42:17,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:42:17,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:42:17,246 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:42:17,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 01:42:17,317 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:42:17,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:42:17,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 01:42:17,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:42:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:42:17,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:42:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:42:17,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13667853] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:42:17,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:42:17,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-27 01:42:17,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487710972] [2023-08-27 01:42:17,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:42:17,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:42:17,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:42:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:42:17,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-08-27 01:42:17,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:42:17,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 1790 transitions, 43860 flow. Second operand has 22 states, 22 states have (on average 61.72727272727273) internal successors, (1358), 22 states have internal predecessors, (1358), 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) [2023-08-27 01:42:17,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:42:17,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:42:17,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:42:29,097 INFO L124 PetriNetUnfolderBase]: 9984/19339 cut-off events. [2023-08-27 01:42:29,098 INFO L125 PetriNetUnfolderBase]: For 555859/555859 co-relation queries the response was YES. [2023-08-27 01:42:29,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173697 conditions, 19339 events. 9984/19339 cut-off events. For 555859/555859 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 161973 event pairs, 1034 based on Foata normal form. 42/19381 useless extension candidates. Maximal degree in co-relation 173555. Up to 14095 conditions per place. [2023-08-27 01:42:29,496 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 1680 selfloop transitions, 476 changer transitions 210/2366 dead transitions. [2023-08-27 01:42:29,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 2366 transitions, 60336 flow [2023-08-27 01:42:29,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-27 01:42:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-27 01:42:29,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2846 transitions. [2023-08-27 01:42:29,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36338100102145043 [2023-08-27 01:42:29,499 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2846 transitions. [2023-08-27 01:42:29,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2846 transitions. [2023-08-27 01:42:29,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:42:29,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2846 transitions. [2023-08-27 01:42:29,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 64.68181818181819) internal successors, (2846), 44 states have internal predecessors, (2846), 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) [2023-08-27 01:42:29,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 178.0) internal successors, (8010), 45 states have internal predecessors, (8010), 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) [2023-08-27 01:42:29,512 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 178.0) internal successors, (8010), 45 states have internal predecessors, (8010), 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) [2023-08-27 01:42:29,512 INFO L175 Difference]: Start difference. First operand has 466 places, 1790 transitions, 43860 flow. Second operand 44 states and 2846 transitions. [2023-08-27 01:42:29,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 2366 transitions, 60336 flow [2023-08-27 01:42:36,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 2366 transitions, 59234 flow, removed 522 selfloop flow, removed 17 redundant places. [2023-08-27 01:42:36,954 INFO L231 Difference]: Finished difference. Result has 499 places, 1980 transitions, 49796 flow [2023-08-27 01:42:36,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=42781, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=49796, PETRI_PLACES=499, PETRI_TRANSITIONS=1980} [2023-08-27 01:42:36,955 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 469 predicate places. [2023-08-27 01:42:36,955 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 1980 transitions, 49796 flow [2023-08-27 01:42:36,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.72727272727273) internal successors, (1358), 22 states have internal predecessors, (1358), 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) [2023-08-27 01:42:36,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:42:36,956 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:42:36,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-27 01:42:37,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:42:37,156 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:42:37,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:42:37,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1173194259, now seen corresponding path program 18 times [2023-08-27 01:42:37,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:42:37,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797467217] [2023-08-27 01:42:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:42:37,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:42:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:42:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:42:37,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:42:37,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797467217] [2023-08-27 01:42:37,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797467217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:42:37,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214906113] [2023-08-27 01:42:37,317 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:42:37,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:42:37,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:42:37,318 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:42:37,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 01:42:37,382 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 01:42:37,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:42:37,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 01:42:37,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:42:37,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:42:37,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:42:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:42:38,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214906113] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:42:38,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:42:38,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 01:42:38,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318360131] [2023-08-27 01:42:38,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:42:38,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:42:38,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:42:38,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:42:38,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:42:38,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:42:38,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 1980 transitions, 49796 flow. Second operand has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 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) [2023-08-27 01:42:38,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:42:38,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:42:38,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:42:52,571 INFO L124 PetriNetUnfolderBase]: 9061/18205 cut-off events. [2023-08-27 01:42:52,572 INFO L125 PetriNetUnfolderBase]: For 652639/652639 co-relation queries the response was YES. [2023-08-27 01:42:52,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174852 conditions, 18205 events. 9061/18205 cut-off events. For 652639/652639 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 156906 event pairs, 1494 based on Foata normal form. 21/18226 useless extension candidates. Maximal degree in co-relation 174702. Up to 16437 conditions per place. [2023-08-27 01:42:52,841 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 1763 selfloop transitions, 361 changer transitions 20/2144 dead transitions. [2023-08-27 01:42:52,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 2144 transitions, 56159 flow [2023-08-27 01:42:52,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 01:42:52,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-27 01:42:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3022 transitions. [2023-08-27 01:42:52,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.361224001912503 [2023-08-27 01:42:52,845 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3022 transitions. [2023-08-27 01:42:52,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3022 transitions. [2023-08-27 01:42:52,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:42:52,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3022 transitions. [2023-08-27 01:42:52,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 64.29787234042553) internal successors, (3022), 47 states have internal predecessors, (3022), 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) [2023-08-27 01:42:52,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 178.0) internal successors, (8544), 48 states have internal predecessors, (8544), 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) [2023-08-27 01:42:52,853 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 178.0) internal successors, (8544), 48 states have internal predecessors, (8544), 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) [2023-08-27 01:42:52,853 INFO L175 Difference]: Start difference. First operand has 499 places, 1980 transitions, 49796 flow. Second operand 47 states and 3022 transitions. [2023-08-27 01:42:52,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 2144 transitions, 56159 flow [2023-08-27 01:43:01,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 2144 transitions, 54333 flow, removed 776 selfloop flow, removed 19 redundant places. [2023-08-27 01:43:01,510 INFO L231 Difference]: Finished difference. Result has 533 places, 2024 transitions, 50095 flow [2023-08-27 01:43:01,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=48066, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1980, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=50095, PETRI_PLACES=533, PETRI_TRANSITIONS=2024} [2023-08-27 01:43:01,512 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 503 predicate places. [2023-08-27 01:43:01,512 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 2024 transitions, 50095 flow [2023-08-27 01:43:01,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 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) [2023-08-27 01:43:01,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:43:01,512 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:43:01,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-27 01:43:01,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:43:01,713 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:43:01,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:43:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1201937769, now seen corresponding path program 19 times [2023-08-27 01:43:01,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:43:01,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358967853] [2023-08-27 01:43:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:43:01,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:43:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:43:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:43:01,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:43:01,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358967853] [2023-08-27 01:43:01,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358967853] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:43:01,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133536387] [2023-08-27 01:43:01,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:43:01,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:43:01,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:43:01,877 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:43:01,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 01:43:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:43:01,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 01:43:01,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:43:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:43:02,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:43:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:43:02,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133536387] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:43:02,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:43:02,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-27 01:43:02,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530548871] [2023-08-27 01:43:02,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:43:02,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:43:02,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:43:02,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:43:02,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-08-27 01:43:02,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:43:02,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 2024 transitions, 50095 flow. Second operand has 22 states, 22 states have (on average 61.77272727272727) internal successors, (1359), 22 states have internal predecessors, (1359), 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) [2023-08-27 01:43:02,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:43:02,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:43:02,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:43:16,117 INFO L124 PetriNetUnfolderBase]: 9284/18794 cut-off events. [2023-08-27 01:43:16,117 INFO L125 PetriNetUnfolderBase]: For 633513/633513 co-relation queries the response was YES. [2023-08-27 01:43:16,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175921 conditions, 18794 events. 9284/18794 cut-off events. For 633513/633513 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 164284 event pairs, 982 based on Foata normal form. 69/18863 useless extension candidates. Maximal degree in co-relation 175762. Up to 14102 conditions per place. [2023-08-27 01:43:16,376 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 1682 selfloop transitions, 569 changer transitions 24/2275 dead transitions. [2023-08-27 01:43:16,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 2275 transitions, 58944 flow [2023-08-27 01:43:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-27 01:43:16,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-27 01:43:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2863 transitions. [2023-08-27 01:43:16,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36555158324821246 [2023-08-27 01:43:16,380 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2863 transitions. [2023-08-27 01:43:16,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2863 transitions. [2023-08-27 01:43:16,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:43:16,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2863 transitions. [2023-08-27 01:43:16,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 65.06818181818181) internal successors, (2863), 44 states have internal predecessors, (2863), 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) [2023-08-27 01:43:16,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 178.0) internal successors, (8010), 45 states have internal predecessors, (8010), 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) [2023-08-27 01:43:16,387 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 178.0) internal successors, (8010), 45 states have internal predecessors, (8010), 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) [2023-08-27 01:43:16,387 INFO L175 Difference]: Start difference. First operand has 533 places, 2024 transitions, 50095 flow. Second operand 44 states and 2863 transitions. [2023-08-27 01:43:16,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 2275 transitions, 58944 flow [2023-08-27 01:43:25,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 2275 transitions, 58164 flow, removed 352 selfloop flow, removed 16 redundant places. [2023-08-27 01:43:25,310 INFO L231 Difference]: Finished difference. Result has 566 places, 2087 transitions, 52868 flow [2023-08-27 01:43:25,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=49427, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=509, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=52868, PETRI_PLACES=566, PETRI_TRANSITIONS=2087} [2023-08-27 01:43:25,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 536 predicate places. [2023-08-27 01:43:25,312 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 2087 transitions, 52868 flow [2023-08-27 01:43:25,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 61.77272727272727) internal successors, (1359), 22 states have internal predecessors, (1359), 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) [2023-08-27 01:43:25,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:43:25,312 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:43:25,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-27 01:43:25,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:43:25,513 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:43:25,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:43:25,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1881028705, now seen corresponding path program 20 times [2023-08-27 01:43:25,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:43:25,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451716648] [2023-08-27 01:43:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:43:25,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:43:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:43:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:43:25,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:43:25,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451716648] [2023-08-27 01:43:25,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451716648] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:43:25,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146240773] [2023-08-27 01:43:25,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:43:25,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:43:25,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:43:25,669 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:43:25,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 01:43:25,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:43:25,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:43:25,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 01:43:25,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:43:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:43:25,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:43:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:43:26,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146240773] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:43:26,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:43:26,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 01:43:26,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36524249] [2023-08-27 01:43:26,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:43:26,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:43:26,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:43:26,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:43:26,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:43:26,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:43:26,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 2087 transitions, 52868 flow. Second operand has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 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) [2023-08-27 01:43:26,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:43:26,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:43:26,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:43:42,715 INFO L124 PetriNetUnfolderBase]: 9935/20491 cut-off events. [2023-08-27 01:43:42,715 INFO L125 PetriNetUnfolderBase]: For 799458/799458 co-relation queries the response was YES. [2023-08-27 01:43:42,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199577 conditions, 20491 events. 9935/20491 cut-off events. For 799458/799458 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 184896 event pairs, 1220 based on Foata normal form. 51/20542 useless extension candidates. Maximal degree in co-relation 199408. Up to 16762 conditions per place. [2023-08-27 01:43:43,047 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 1892 selfloop transitions, 522 changer transitions 25/2439 dead transitions. [2023-08-27 01:43:43,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 2439 transitions, 65230 flow [2023-08-27 01:43:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 01:43:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-27 01:43:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3014 transitions. [2023-08-27 01:43:43,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36026775041836 [2023-08-27 01:43:43,050 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3014 transitions. [2023-08-27 01:43:43,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3014 transitions. [2023-08-27 01:43:43,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:43:43,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3014 transitions. [2023-08-27 01:43:43,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 64.12765957446808) internal successors, (3014), 47 states have internal predecessors, (3014), 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) [2023-08-27 01:43:43,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 178.0) internal successors, (8544), 48 states have internal predecessors, (8544), 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) [2023-08-27 01:43:43,056 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 178.0) internal successors, (8544), 48 states have internal predecessors, (8544), 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) [2023-08-27 01:43:43,056 INFO L175 Difference]: Start difference. First operand has 566 places, 2087 transitions, 52868 flow. Second operand 47 states and 3014 transitions. [2023-08-27 01:43:43,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 2439 transitions, 65230 flow [2023-08-27 01:43:53,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 2439 transitions, 64325 flow, removed 303 selfloop flow, removed 27 redundant places. [2023-08-27 01:43:53,909 INFO L231 Difference]: Finished difference. Result has 590 places, 2269 transitions, 59186 flow [2023-08-27 01:43:53,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=52155, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2087, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=368, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=59186, PETRI_PLACES=590, PETRI_TRANSITIONS=2269} [2023-08-27 01:43:53,911 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2023-08-27 01:43:53,911 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 2269 transitions, 59186 flow [2023-08-27 01:43:53,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.76) internal successors, (1544), 25 states have internal predecessors, (1544), 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) [2023-08-27 01:43:53,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:43:53,912 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:43:53,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-27 01:43:54,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-27 01:43:54,120 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:43:54,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:43:54,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1909772215, now seen corresponding path program 21 times [2023-08-27 01:43:54,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:43:54,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938734717] [2023-08-27 01:43:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:43:54,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:43:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:43:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:43:54,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:43:54,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938734717] [2023-08-27 01:43:54,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938734717] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:43:54,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245611147] [2023-08-27 01:43:54,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:43:54,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:43:54,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:43:54,283 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:43:54,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-27 01:43:54,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:43:54,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:43:54,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 01:43:54,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:43:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:43:54,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:43:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:43:55,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245611147] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:43:55,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:43:55,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-27 01:43:55,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450606324] [2023-08-27 01:43:55,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:43:55,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:43:55,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:43:55,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:43:55,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:43:55,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:43:55,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 2269 transitions, 59186 flow. Second operand has 25 states, 25 states have (on average 61.84) internal successors, (1546), 25 states have internal predecessors, (1546), 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) [2023-08-27 01:43:55,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:43:55,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:43:55,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:44:12,482 INFO L124 PetriNetUnfolderBase]: 10136/20686 cut-off events. [2023-08-27 01:44:12,482 INFO L125 PetriNetUnfolderBase]: For 888586/888586 co-relation queries the response was YES. [2023-08-27 01:44:12,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210340 conditions, 20686 events. 10136/20686 cut-off events. For 888586/888586 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 184862 event pairs, 1222 based on Foata normal form. 49/20735 useless extension candidates. Maximal degree in co-relation 210167. Up to 16813 conditions per place. [2023-08-27 01:44:12,933 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 2070 selfloop transitions, 470 changer transitions 13/2553 dead transitions. [2023-08-27 01:44:12,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 2553 transitions, 70381 flow [2023-08-27 01:44:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-27 01:44:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-27 01:44:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3081 transitions. [2023-08-27 01:44:12,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36060393258426965 [2023-08-27 01:44:12,945 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3081 transitions. [2023-08-27 01:44:12,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3081 transitions. [2023-08-27 01:44:12,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:44:12,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3081 transitions. [2023-08-27 01:44:12,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 64.1875) internal successors, (3081), 48 states have internal predecessors, (3081), 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) [2023-08-27 01:44:12,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 178.0) internal successors, (8722), 49 states have internal predecessors, (8722), 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) [2023-08-27 01:44:12,954 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 178.0) internal successors, (8722), 49 states have internal predecessors, (8722), 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) [2023-08-27 01:44:12,954 INFO L175 Difference]: Start difference. First operand has 590 places, 2269 transitions, 59186 flow. Second operand 48 states and 3081 transitions. [2023-08-27 01:44:12,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 2553 transitions, 70381 flow [2023-08-27 01:44:27,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 2553 transitions, 68242 flow, removed 908 selfloop flow, removed 19 redundant places. [2023-08-27 01:44:27,160 INFO L231 Difference]: Finished difference. Result has 620 places, 2331 transitions, 60145 flow [2023-08-27 01:44:27,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=57646, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1835, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=60145, PETRI_PLACES=620, PETRI_TRANSITIONS=2331} [2023-08-27 01:44:27,162 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 590 predicate places. [2023-08-27 01:44:27,163 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 2331 transitions, 60145 flow [2023-08-27 01:44:27,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.84) internal successors, (1546), 25 states have internal predecessors, (1546), 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) [2023-08-27 01:44:27,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:44:27,163 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:44:27,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-27 01:44:27,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-27 01:44:27,369 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:44:27,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:44:27,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1556253353, now seen corresponding path program 22 times [2023-08-27 01:44:27,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:44:27,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696128619] [2023-08-27 01:44:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:44:27,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:44:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:44:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:44:27,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:44:27,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696128619] [2023-08-27 01:44:27,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696128619] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:44:27,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001286022] [2023-08-27 01:44:27,511 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:44:27,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:44:27,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:44:27,512 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:44:27,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-27 01:44:27,584 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:44:27,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:44:27,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 01:44:27,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:44:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:44:27,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:44:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:44:27,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001286022] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:44:27,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:44:27,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-27 01:44:27,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607086915] [2023-08-27 01:44:27,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:44:27,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 01:44:27,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:44:27,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 01:44:27,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-08-27 01:44:27,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:44:27,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 2331 transitions, 60145 flow. Second operand has 21 states, 21 states have (on average 61.76190476190476) internal successors, (1297), 21 states have internal predecessors, (1297), 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) [2023-08-27 01:44:27,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:44:27,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:44:27,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:44:46,435 INFO L124 PetriNetUnfolderBase]: 12366/24182 cut-off events. [2023-08-27 01:44:46,435 INFO L125 PetriNetUnfolderBase]: For 996891/996891 co-relation queries the response was YES. [2023-08-27 01:44:46,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247264 conditions, 24182 events. 12366/24182 cut-off events. For 996891/996891 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 212218 event pairs, 1078 based on Foata normal form. 159/24341 useless extension candidates. Maximal degree in co-relation 247087. Up to 17301 conditions per place. [2023-08-27 01:44:46,931 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 2021 selfloop transitions, 1203 changer transitions 50/3274 dead transitions. [2023-08-27 01:44:46,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 3274 transitions, 89808 flow [2023-08-27 01:44:46,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-27 01:44:46,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-27 01:44:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2566 transitions. [2023-08-27 01:44:46,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3603932584269663 [2023-08-27 01:44:46,934 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2566 transitions. [2023-08-27 01:44:46,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2566 transitions. [2023-08-27 01:44:46,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:44:46,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2566 transitions. [2023-08-27 01:44:46,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 64.15) internal successors, (2566), 40 states have internal predecessors, (2566), 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) [2023-08-27 01:44:46,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 178.0) internal successors, (7298), 41 states have internal predecessors, (7298), 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) [2023-08-27 01:44:46,941 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 178.0) internal successors, (7298), 41 states have internal predecessors, (7298), 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) [2023-08-27 01:44:46,941 INFO L175 Difference]: Start difference. First operand has 620 places, 2331 transitions, 60145 flow. Second operand 40 states and 2566 transitions. [2023-08-27 01:44:46,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 3274 transitions, 89808 flow [2023-08-27 01:45:01,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 3274 transitions, 89307 flow, removed 51 selfloop flow, removed 27 redundant places. [2023-08-27 01:45:01,506 INFO L231 Difference]: Finished difference. Result has 631 places, 2906 transitions, 79782 flow [2023-08-27 01:45:01,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=59669, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=704, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=79782, PETRI_PLACES=631, PETRI_TRANSITIONS=2906} [2023-08-27 01:45:01,508 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 601 predicate places. [2023-08-27 01:45:01,508 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 2906 transitions, 79782 flow [2023-08-27 01:45:01,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 61.76190476190476) internal successors, (1297), 21 states have internal predecessors, (1297), 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) [2023-08-27 01:45:01,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:45:01,508 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:45:01,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-27 01:45:01,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:45:01,709 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:45:01,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:45:01,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2125548241, now seen corresponding path program 23 times [2023-08-27 01:45:01,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:45:01,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866728441] [2023-08-27 01:45:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:45:01,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:45:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:45:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:45:01,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:45:01,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866728441] [2023-08-27 01:45:01,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866728441] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:45:01,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286894641] [2023-08-27 01:45:01,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:45:01,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:45:01,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:45:01,903 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:45:01,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-27 01:45:01,982 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 01:45:01,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:45:01,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 01:45:01,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:45:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:45:02,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:45:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:45:02,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286894641] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:45:02,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:45:02,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-27 01:45:02,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460992852] [2023-08-27 01:45:02,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:45:02,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 01:45:02,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:45:02,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 01:45:02,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-08-27 01:45:02,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:45:02,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 2906 transitions, 79782 flow. Second operand has 26 states, 26 states have (on average 61.57692307692308) internal successors, (1601), 26 states have internal predecessors, (1601), 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) [2023-08-27 01:45:02,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:45:02,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:45:02,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:45:34,017 INFO L124 PetriNetUnfolderBase]: 15931/32135 cut-off events. [2023-08-27 01:45:34,017 INFO L125 PetriNetUnfolderBase]: For 1457152/1457152 co-relation queries the response was YES. [2023-08-27 01:45:34,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342158 conditions, 32135 events. 15931/32135 cut-off events. For 1457152/1457152 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 306548 event pairs, 471 based on Foata normal form. 195/32330 useless extension candidates. Maximal degree in co-relation 341976. Up to 11698 conditions per place. [2023-08-27 01:45:34,800 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 2151 selfloop transitions, 1831 changer transitions 14/3996 dead transitions. [2023-08-27 01:45:34,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 3996 transitions, 115079 flow [2023-08-27 01:45:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-08-27 01:45:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-08-27 01:45:34,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 3885 transitions. [2023-08-27 01:45:34,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3637640449438202 [2023-08-27 01:45:34,803 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 3885 transitions. [2023-08-27 01:45:34,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 3885 transitions. [2023-08-27 01:45:34,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:45:34,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 3885 transitions. [2023-08-27 01:45:34,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 64.75) internal successors, (3885), 60 states have internal predecessors, (3885), 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) [2023-08-27 01:45:34,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 178.0) internal successors, (10858), 61 states have internal predecessors, (10858), 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) [2023-08-27 01:45:34,810 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 178.0) internal successors, (10858), 61 states have internal predecessors, (10858), 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) [2023-08-27 01:45:34,810 INFO L175 Difference]: Start difference. First operand has 631 places, 2906 transitions, 79782 flow. Second operand 60 states and 3885 transitions. [2023-08-27 01:45:34,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 3996 transitions, 115079 flow [2023-08-27 01:46:05,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 3996 transitions, 110438 flow, removed 2293 selfloop flow, removed 14 redundant places. [2023-08-27 01:46:05,099 INFO L231 Difference]: Finished difference. Result has 681 places, 3447 transitions, 96882 flow [2023-08-27 01:46:05,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=75001, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=96882, PETRI_PLACES=681, PETRI_TRANSITIONS=3447} [2023-08-27 01:46:05,101 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 651 predicate places. [2023-08-27 01:46:05,101 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 3447 transitions, 96882 flow [2023-08-27 01:46:05,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 61.57692307692308) internal successors, (1601), 26 states have internal predecessors, (1601), 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) [2023-08-27 01:46:05,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:46:05,102 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:46:05,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-27 01:46:05,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 01:46:05,305 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:46:05,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:46:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash -791272945, now seen corresponding path program 24 times [2023-08-27 01:46:05,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:46:05,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256939317] [2023-08-27 01:46:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:46:05,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:46:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:46:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:46:05,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:46:05,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256939317] [2023-08-27 01:46:05,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256939317] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:46:05,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281030213] [2023-08-27 01:46:05,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:46:05,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:46:05,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:46:05,535 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:46:05,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-27 01:46:05,605 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 01:46:05,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:46:05,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 01:46:05,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:46:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:46:05,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:46:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:46:06,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281030213] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:46:06,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:46:06,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-27 01:46:06,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559606807] [2023-08-27 01:46:06,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:46:06,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 01:46:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:46:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 01:46:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-08-27 01:46:06,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:46:06,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 3447 transitions, 96882 flow. Second operand has 26 states, 26 states have (on average 61.57692307692308) internal successors, (1601), 26 states have internal predecessors, (1601), 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) [2023-08-27 01:46:06,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:46:06,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:46:06,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:46:44,609 INFO L124 PetriNetUnfolderBase]: 15866/31972 cut-off events. [2023-08-27 01:46:44,610 INFO L125 PetriNetUnfolderBase]: For 1545406/1545406 co-relation queries the response was YES. [2023-08-27 01:46:45,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349222 conditions, 31972 events. 15866/31972 cut-off events. For 1545406/1545406 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 303861 event pairs, 449 based on Foata normal form. 217/32189 useless extension candidates. Maximal degree in co-relation 349046. Up to 11698 conditions per place. [2023-08-27 01:46:45,843 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 2077 selfloop transitions, 2164 changer transitions 26/4267 dead transitions. [2023-08-27 01:46:45,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 4267 transitions, 124123 flow [2023-08-27 01:46:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-08-27 01:46:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-08-27 01:46:45,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4046 transitions. [2023-08-27 01:46:45,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079900124843944 [2023-08-27 01:46:45,846 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 4046 transitions. [2023-08-27 01:46:45,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 4046 transitions. [2023-08-27 01:46:45,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:46:45,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 4046 transitions. [2023-08-27 01:46:45,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 64.22222222222223) internal successors, (4046), 63 states have internal predecessors, (4046), 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) [2023-08-27 01:46:45,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 178.0) internal successors, (11392), 64 states have internal predecessors, (11392), 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) [2023-08-27 01:46:45,854 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 178.0) internal successors, (11392), 64 states have internal predecessors, (11392), 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) [2023-08-27 01:46:45,854 INFO L175 Difference]: Start difference. First operand has 681 places, 3447 transitions, 96882 flow. Second operand 63 states and 4046 transitions. [2023-08-27 01:46:45,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 740 places, 4267 transitions, 124123 flow [2023-08-27 01:47:20,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 4267 transitions, 119794 flow, removed 1672 selfloop flow, removed 36 redundant places. [2023-08-27 01:47:20,255 INFO L231 Difference]: Finished difference. Result has 711 places, 3821 transitions, 109069 flow [2023-08-27 01:47:20,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=92720, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1790, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=109069, PETRI_PLACES=711, PETRI_TRANSITIONS=3821} [2023-08-27 01:47:20,257 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 681 predicate places. [2023-08-27 01:47:20,257 INFO L495 AbstractCegarLoop]: Abstraction has has 711 places, 3821 transitions, 109069 flow [2023-08-27 01:47:20,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 61.57692307692308) internal successors, (1601), 26 states have internal predecessors, (1601), 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) [2023-08-27 01:47:20,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:47:20,258 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:47:20,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-27 01:47:20,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-27 01:47:20,463 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:47:20,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:47:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1461002549, now seen corresponding path program 25 times [2023-08-27 01:47:20,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:47:20,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988334045] [2023-08-27 01:47:20,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:47:20,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:47:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:47:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:47:20,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:47:20,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988334045] [2023-08-27 01:47:20,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988334045] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:47:20,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224323251] [2023-08-27 01:47:20,666 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:47:20,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:47:20,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:47:20,667 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:47:20,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-27 01:47:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:47:20,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 01:47:20,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:47:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:47:20,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:47:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:47:21,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224323251] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:47:21,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:47:21,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-08-27 01:47:21,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245289254] [2023-08-27 01:47:21,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:47:21,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:47:21,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:47:21,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:47:21,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:47:21,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:47:21,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 3821 transitions, 109069 flow. Second operand has 25 states, 25 states have (on average 61.6) internal successors, (1540), 25 states have internal predecessors, (1540), 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) [2023-08-27 01:47:21,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:47:21,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:47:21,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:48:09,131 INFO L124 PetriNetUnfolderBase]: 17915/35171 cut-off events. [2023-08-27 01:48:09,132 INFO L125 PetriNetUnfolderBase]: For 1781301/1781301 co-relation queries the response was YES. [2023-08-27 01:48:10,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400034 conditions, 35171 events. 17915/35171 cut-off events. For 1781301/1781301 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 329306 event pairs, 1114 based on Foata normal form. 75/35246 useless extension candidates. Maximal degree in co-relation 399855. Up to 25247 conditions per place. [2023-08-27 01:48:10,424 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 2923 selfloop transitions, 1690 changer transitions 22/4635 dead transitions. [2023-08-27 01:48:10,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 4635 transitions, 139638 flow [2023-08-27 01:48:10,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-27 01:48:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-27 01:48:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 3556 transitions. [2023-08-27 01:48:10,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36322778345250256 [2023-08-27 01:48:10,427 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 3556 transitions. [2023-08-27 01:48:10,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 3556 transitions. [2023-08-27 01:48:10,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:48:10,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 3556 transitions. [2023-08-27 01:48:10,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 64.65454545454546) internal successors, (3556), 55 states have internal predecessors, (3556), 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) [2023-08-27 01:48:10,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 178.0) internal successors, (9968), 56 states have internal predecessors, (9968), 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) [2023-08-27 01:48:10,434 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 178.0) internal successors, (9968), 56 states have internal predecessors, (9968), 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) [2023-08-27 01:48:10,434 INFO L175 Difference]: Start difference. First operand has 711 places, 3821 transitions, 109069 flow. Second operand 55 states and 3556 transitions. [2023-08-27 01:48:10,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 761 places, 4635 transitions, 139638 flow [2023-08-27 01:48:59,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 727 places, 4635 transitions, 136554 flow, removed 1292 selfloop flow, removed 34 redundant places. [2023-08-27 01:48:59,294 INFO L231 Difference]: Finished difference. Result has 743 places, 4443 transitions, 130527 flow [2023-08-27 01:48:59,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=106058, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=130527, PETRI_PLACES=743, PETRI_TRANSITIONS=4443} [2023-08-27 01:48:59,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 713 predicate places. [2023-08-27 01:48:59,297 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 4443 transitions, 130527 flow [2023-08-27 01:48:59,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 61.6) internal successors, (1540), 25 states have internal predecessors, (1540), 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) [2023-08-27 01:48:59,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:48:59,297 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:48:59,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-27 01:48:59,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-27 01:48:59,498 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:48:59,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:48:59,498 INFO L85 PathProgramCache]: Analyzing trace with hash 991145693, now seen corresponding path program 26 times [2023-08-27 01:48:59,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:48:59,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453961140] [2023-08-27 01:48:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:48:59,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:48:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:48:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:48:59,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:48:59,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453961140] [2023-08-27 01:48:59,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453961140] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:48:59,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917837342] [2023-08-27 01:48:59,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:48:59,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:48:59,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:48:59,757 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:48:59,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-27 01:48:59,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:48:59,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:48:59,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 01:48:59,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:49:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:49:00,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:49:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:49:00,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917837342] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:49:00,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:49:00,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2023-08-27 01:49:00,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188246826] [2023-08-27 01:49:00,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:49:00,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 01:49:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:49:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 01:49:00,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-08-27 01:49:00,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 178 [2023-08-27 01:49:00,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 4443 transitions, 130527 flow. Second operand has 26 states, 26 states have (on average 56.73076923076923) internal successors, (1475), 26 states have internal predecessors, (1475), 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) [2023-08-27 01:49:00,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:49:00,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 178 [2023-08-27 01:49:00,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:50:03,433 INFO L124 PetriNetUnfolderBase]: 18285/37604 cut-off events. [2023-08-27 01:50:03,433 INFO L125 PetriNetUnfolderBase]: For 1749641/1749641 co-relation queries the response was YES. [2023-08-27 01:50:04,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409089 conditions, 37604 events. 18285/37604 cut-off events. For 1749641/1749641 co-relation queries the response was YES. Maximal size of possible extension queue 1257. Compared 373763 event pairs, 796 based on Foata normal form. 228/37832 useless extension candidates. Maximal degree in co-relation 408901. Up to 18081 conditions per place. [2023-08-27 01:50:05,182 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 2985 selfloop transitions, 2003 changer transitions 30/5018 dead transitions. [2023-08-27 01:50:05,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 767 places, 5018 transitions, 156220 flow [2023-08-27 01:50:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-27 01:50:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-27 01:50:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2377 transitions. [2023-08-27 01:50:05,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3338483146067416 [2023-08-27 01:50:05,191 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2377 transitions. [2023-08-27 01:50:05,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2377 transitions. [2023-08-27 01:50:05,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:50:05,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2377 transitions. [2023-08-27 01:50:05,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 59.425) internal successors, (2377), 40 states have internal predecessors, (2377), 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) [2023-08-27 01:50:05,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 178.0) internal successors, (7298), 41 states have internal predecessors, (7298), 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) [2023-08-27 01:50:05,198 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 178.0) internal successors, (7298), 41 states have internal predecessors, (7298), 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) [2023-08-27 01:50:05,198 INFO L175 Difference]: Start difference. First operand has 743 places, 4443 transitions, 130527 flow. Second operand 40 states and 2377 transitions. [2023-08-27 01:50:05,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 767 places, 5018 transitions, 156220 flow [2023-08-27 01:50:47,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 5018 transitions, 150243 flow, removed 2500 selfloop flow, removed 32 redundant places. [2023-08-27 01:50:47,584 INFO L231 Difference]: Finished difference. Result has 740 places, 4723 transitions, 140037 flow [2023-08-27 01:50:47,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=124584, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1688, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=140037, PETRI_PLACES=740, PETRI_TRANSITIONS=4723} [2023-08-27 01:50:47,588 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 710 predicate places. [2023-08-27 01:50:47,588 INFO L495 AbstractCegarLoop]: Abstraction has has 740 places, 4723 transitions, 140037 flow [2023-08-27 01:50:47,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 56.73076923076923) internal successors, (1475), 26 states have internal predecessors, (1475), 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) [2023-08-27 01:50:47,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:50:47,589 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:50:47,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-27 01:50:47,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:50:47,793 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:50:47,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:50:47,793 INFO L85 PathProgramCache]: Analyzing trace with hash 34509616, now seen corresponding path program 27 times [2023-08-27 01:50:47,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:50:47,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235334974] [2023-08-27 01:50:47,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:50:47,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:50:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:50:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:50:48,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:50:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235334974] [2023-08-27 01:50:48,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235334974] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:50:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616795595] [2023-08-27 01:50:48,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:50:48,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:50:48,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:50:48,052 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:50:48,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-27 01:50:48,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 01:50:48,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:50:48,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 01:50:48,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:50:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:50:48,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:50:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:50:48,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616795595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:50:48,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:50:48,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-27 01:50:48,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605423291] [2023-08-27 01:50:48,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:50:48,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 01:50:48,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:50:48,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 01:50:48,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2023-08-27 01:50:48,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:50:48,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 740 places, 4723 transitions, 140037 flow. Second operand has 29 states, 29 states have (on average 61.51724137931034) internal successors, (1784), 29 states have internal predecessors, (1784), 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) [2023-08-27 01:50:48,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:50:48,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:50:48,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:52:16,256 INFO L124 PetriNetUnfolderBase]: 23990/48248 cut-off events. [2023-08-27 01:52:16,256 INFO L125 PetriNetUnfolderBase]: For 2263849/2263849 co-relation queries the response was YES. [2023-08-27 01:52:18,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540333 conditions, 48248 events. 23990/48248 cut-off events. For 2263849/2263849 co-relation queries the response was YES. Maximal size of possible extension queue 1583. Compared 485359 event pairs, 1541 based on Foata normal form. 57/48305 useless extension candidates. Maximal degree in co-relation 540145. Up to 28752 conditions per place. [2023-08-27 01:52:18,447 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 3506 selfloop transitions, 3389 changer transitions 12/6907 dead transitions. [2023-08-27 01:52:18,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 837 places, 6907 transitions, 215989 flow [2023-08-27 01:52:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-08-27 01:52:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2023-08-27 01:52:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 6489 transitions. [2023-08-27 01:52:18,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3609411502948048 [2023-08-27 01:52:18,452 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 6489 transitions. [2023-08-27 01:52:18,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 6489 transitions. [2023-08-27 01:52:18,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:52:18,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 6489 transitions. [2023-08-27 01:52:18,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 102 states, 101 states have (on average 64.24752475247524) internal successors, (6489), 101 states have internal predecessors, (6489), 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) [2023-08-27 01:52:18,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 102 states, 102 states have (on average 178.0) internal successors, (18156), 102 states have internal predecessors, (18156), 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) [2023-08-27 01:52:18,466 INFO L81 ComplementDD]: Finished complementDD. Result has 102 states, 102 states have (on average 178.0) internal successors, (18156), 102 states have internal predecessors, (18156), 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) [2023-08-27 01:52:18,466 INFO L175 Difference]: Start difference. First operand has 740 places, 4723 transitions, 140037 flow. Second operand 101 states and 6489 transitions. [2023-08-27 01:52:18,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 837 places, 6907 transitions, 215989 flow [2023-08-27 01:53:32,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 805 places, 6907 transitions, 204023 flow, removed 3929 selfloop flow, removed 32 redundant places. [2023-08-27 01:53:32,924 INFO L231 Difference]: Finished difference. Result has 831 places, 6448 transitions, 192170 flow [2023-08-27 01:53:32,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=130728, PETRI_DIFFERENCE_MINUEND_PLACES=705, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1989, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=192170, PETRI_PLACES=831, PETRI_TRANSITIONS=6448} [2023-08-27 01:53:32,928 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 801 predicate places. [2023-08-27 01:53:32,928 INFO L495 AbstractCegarLoop]: Abstraction has has 831 places, 6448 transitions, 192170 flow [2023-08-27 01:53:32,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 61.51724137931034) internal successors, (1784), 29 states have internal predecessors, (1784), 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) [2023-08-27 01:53:32,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:53:32,929 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:53:32,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-08-27 01:53:33,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:53:33,134 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 01:53:33,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:53:33,134 INFO L85 PathProgramCache]: Analyzing trace with hash 637497086, now seen corresponding path program 28 times [2023-08-27 01:53:33,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:53:33,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780515686] [2023-08-27 01:53:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:53:33,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:53:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:53:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:53:33,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:53:33,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780515686] [2023-08-27 01:53:33,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780515686] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:53:33,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398557874] [2023-08-27 01:53:33,351 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:53:33,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:53:33,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:53:33,352 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:53:33,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-27 01:53:33,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:53:33,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:53:33,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 01:53:33,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:53:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:53:33,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:53:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:53:33,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398557874] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:53:33,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:53:33,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-27 01:53:33,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626721204] [2023-08-27 01:53:33,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:53:33,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 01:53:33,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:53:33,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 01:53:33,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2023-08-27 01:53:33,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 178 [2023-08-27 01:53:33,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 831 places, 6448 transitions, 192170 flow. Second operand has 29 states, 29 states have (on average 61.58620689655172) internal successors, (1786), 29 states have internal predecessors, (1786), 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) [2023-08-27 01:53:33,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:53:33,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 178 [2023-08-27 01:53:33,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-27 01:53:35,807 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 01:53:35,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-27 01:53:35,808 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (20 of 21 remaining) [2023-08-27 01:53:35,811 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 01:53:35,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-27 01:53:36,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-27 01:53:36,009 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. [2023-08-27 01:53:36,010 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-27 01:53:36,010 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-27 01:53:36,010 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-27 01:53:36,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-27 01:53:36,012 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-27 01:53:36,012 INFO L445 BasicCegarLoop]: Path program histogram: [28, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:53:36,015 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 01:53:36,016 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 01:53:36,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 01:53:36 BasicIcfg [2023-08-27 01:53:36,018 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 01:53:36,018 INFO L158 Benchmark]: Toolchain (without parser) took 806613.86ms. Allocated memory was 356.5MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 332.7MB in the beginning and 3.5GB in the end (delta: -3.2GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-08-27 01:53:36,018 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 356.5MB. Free memory is still 333.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 01:53:36,018 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.08ms. Allocated memory is still 356.5MB. Free memory was 332.7MB in the beginning and 321.9MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 01:53:36,019 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.33ms. Allocated memory is still 356.5MB. Free memory was 321.9MB in the beginning and 320.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 01:53:36,019 INFO L158 Benchmark]: Boogie Preprocessor took 34.07ms. Allocated memory is still 356.5MB. Free memory was 320.3MB in the beginning and 319.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 01:53:36,019 INFO L158 Benchmark]: RCFGBuilder took 530.39ms. Allocated memory is still 356.5MB. Free memory was 319.2MB in the beginning and 299.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 01:53:36,019 INFO L158 Benchmark]: TraceAbstraction took 805759.15ms. Allocated memory was 356.5MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 298.9MB in the beginning and 3.5GB in the end (delta: -3.2GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-08-27 01:53:36,020 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 356.5MB. Free memory is still 333.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 239.08ms. Allocated memory is still 356.5MB. Free memory was 332.7MB in the beginning and 321.9MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.33ms. Allocated memory is still 356.5MB. Free memory was 321.9MB in the beginning and 320.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.07ms. Allocated memory is still 356.5MB. Free memory was 320.3MB in the beginning and 319.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 530.39ms. Allocated memory is still 356.5MB. Free memory was 319.2MB in the beginning and 299.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 805759.15ms. Allocated memory was 356.5MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 298.9MB in the beginning and 3.5GB in the end (delta: -3.2GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 87 PlacesBefore, 30 PlacesAfterwards, 86 TransitionsBefore, 25 TransitionsAfterwards, 812 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 81 TotalNumberOfCompositions, 975 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 935, independent: 931, independent conditional: 0, independent unconditional: 931, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 410, independent: 408, independent conditional: 0, independent unconditional: 408, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 935, independent: 523, independent conditional: 0, independent unconditional: 523, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 410, unknown conditional: 0, unknown unconditional: 410] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 120 locations, 21 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 805.6s, OverallIterations: 43, TraceHistogramMax: 10, PathProgramHistogramMax: 28, EmptinessCheckTime: 0.0s, AutomataDifference: 771.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5395 SdHoareTripleChecker+Valid, 14.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5395 mSDsluCounter, 675 SdHoareTripleChecker+Invalid, 12.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 519 mSDsCounter, 2105 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28421 IncrementalHoareTripleChecker+Invalid, 30526 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2105 mSolverCounterUnsat, 156 mSDtfsCounter, 28421 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2150 GetRequests, 540 SyntacticMatches, 25 SemanticMatches, 1584 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29697 ImplicationChecksByTransitivity, 47.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192170occurred in iteration=42, InterpolantAutomatonStates: 1252, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 20.5s InterpolantComputationTime, 1114 NumberOfCodeBlocks, 1110 NumberOfCodeBlocksAsserted, 118 NumberOfCheckSat, 1502 ConstructedInterpolants, 0 QuantifiedInterpolants, 19852 SizeOfPredicates, 144 NumberOfNonLiveVariables, 4666 ConjunctsInSsa, 684 ConjunctsInUnsatCore, 115 InterpolantComputations, 10 PerfectInterpolantSequences, 27/577 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown